User:W0DBW
w0dbw - Christian Amateur Radio Operator
Derek Winterstien / Nebraska
EN21BA33
Contents
- 1 Current Events
- 2 About Me
- 3 Memo: Proposal (Please Read)
- 4 Recent Equipment Photographs
- 5 Transceivers
- 6 Antenna Systems
- 7 Some Local Nets
- 8 unknown nets
- 9 Local Repeaters
- 10 extended range repeaters
- 11 For Sale
- 12 Sun Spots
- 13 Skip
- 14 Hy Gain Penetrator
- 15 Investigating
- 15.1 Downeast Microwave DEM 222-28CK
- 15.2 Icom IC-9100
- 15.3 NOISE CANCEL/SIGNAL ENHANCER - Comparator
- 15.4 Equipment: Connect Systems CS750 DMR Digital/Analog Radio
- 15.5 Equipment: Yaesu VX-3R VHF/UHF DualBand Handheld -vs- ZASTONE ZT-2R+
- 15.6 Icom ICR6 Broadband Receiver
- 15.7 Yaesu FT-736R
- 15.8 misco
- 16 Scanning the LW, MW, and SW dial
- 17 Wavelength to Frequency Table
- 18 mobile antennas
- 19 OMMRS
- 20 Local Amateur Web Sites
- 21 power supply
- 22 Note to Moderator / Admin
Current Events
UPDATE: 6:59 AM Friday, September 02, 2016 I've owned a D-Star radio for nearly a year now and never taken the time to try out the D-Star digital mode. The first step is registration of my ham callsign which gives me access to the D-Star network.
This is similar to the DMR DMARC registration with the exception that D-Star does not use the unique ID number, it is based entirely on the callsign, which makes sense since it too had to be unique. I am not a big fan on the digital modes, there are too many of them and none are completely open, as they should be.
UPDATE: 11:18 PM Saturday, August 27, 2016 The Hawaii QSO Party was taking place today, and there was much ado about a female operator on 14.228MHz. Conversations on a couple local repeaters involved who was able to get though the pileup on 20-meter to make contact with "Ann." I had to give it a go. Using my humble NVIS fence antenna which I made primarily for 80-meter I tuned it to 20 and starting putting out my call sign. It took about 20 minutes of trying and waiting my turn to achieve a successful QSO with kh6w in Hawaii. She was using a club / contest call which I may not have copied correctly: kh6lhn. I asked for her own call sign which I can now add to my log.
kh6w Ann hawaii 10:51 PM Saturday, August 27, 2016 14.228
UPDATE: Thursday, August 11, 2016 My 220 promote the band activity includes the creation of 3 new wiki pages...
UPDATE: Saturday, July 23, 2016 I have been very patient with NPPD (Nebraska Public Power District) on trying to get them to correct the high levels of RFI coming from the power lines in the alleyway behind my residence. The poles are not properly grounded, and their own contracted engineer advised them to correct the problem. Instead of going to work on the problem, the area supervisor "Mick" insists that grounding the poles is too expensive and that all the RFI is coming from the US Post Office 5 blocks away. He even denied what their own engineer had determined to be the problem. Do you think maybe it is time to contact the FCC?
NPPD - Noise Pollution & Powerful Discharges
Updates to the Plattsmouth ARC Web Site! - Visit http://www.kb0smx.org and see whats new on our club web site.
UPDATE: Wednesday, June 29, 2016 Started the Wednesday night SWIARC net late. No Rich. The following checkins:
- w0dbw (NET CONTROL)
- kd0cvg - Ed
- ke0cdw - Ryan
- wd0gcn - Ron in Blair NE
- kc0mux - Robert
- kd0nme - George
After the net n0yue was a call that joined an after net conversation.
On another topic, you can see our Plattsmouth Amateur Radio Club Field Day results:
- www.kb0smx.org - Plattsmouth Amateur Radio Club web site.
UPDATE: Sunday, June 19, 2016
For Steve, n0up - Douglas Co ARES net report.
DIRECTED NET Douglas Co ARES Net 146.94 or backup 147.36
01 n0up - announced (1) field day 1pm nxt Sat, (2) July 23 is MARE drill 02 w0dbw 03 ke6dzd - 2 aprs 1 packet 04 ke0xq 05 d0aai 06 ka7lma 07 kd0fjr - announced fusion swiarc repeater 08 wb0bgb 09 kc0fan 10 kc0ryz 11 k0vin 12 kc0dhm
After the net someone asked about the new SWIARC Fusion repeater. Here is the freq and PL necessary to use:
- KD0FJR reports the C4FM repeater can be reached at 442.225+ 136.5 CTCSS tone required
UPDATE: Archived and Compressed older posts...
UPDATE: Saturday, June 18, 2016
Rich WA0ZQG announced 2m Simplex Freq cleared for field day use.
UPDATE: Monday, June 13, 2016
Field Day is June 25 - 26, and the Plattsmouth Amateur...
UPDATE: Tuesday, May 31, 2016
Have you been listening to the PL tone debate on the 146.820 repeater? Don't be confused by what you are hearing. Read my memo on how a simple PL tone can benefit SWIARC repeater users without denying those without a tone board access to the repeater.
SHORT MEMO: W0DBW- Disambiguation on Repeater Tone Encoded Squelch and How PL Can Benefit SWIARC
If you understand CTCSS, then you will see the benefit in what I am suggesting.
UPDATE: Saturday, May 28, 2016
According to the FCC [...] approval of my new vanity callsign which I will now be using, w0dbw. The vanity callsign uses my initials ...
UPDATE: Wednesday, May 25, 2016
Recently I purchased a second TYT TH-9800 not because [...] However, the radio was not as described. See my youtube video: https://youtu.be/aZbn8fq5UBU Caveat Emptor!
May 15, 2016 - The TH-9000D is an FM 65W 1.25-Meter radio. WB0YLA is a repeater in Omaha on the band. 224.760 Mhz, -1600 offset, 146.2 PL. Open repeater located at 156th & Maple.
April 18, 2016 - Installed Ringo antenna on top of the tower. 
Yeah, that's me wearing my ANSI Z359.1-2007, OSHA 1926.502 compliant safety gear
March 18, 2016 - I put the 70cm Yaga beam up on the tower today. Now it is much easier to hit the Omaha UHF repeaters.
SWIARC is testing digital mode on their .82 repeater [...] Signal strength for me when from a 6+ down to 2 on the S-meter. It will be interesting [...]
When I was transmitting on my old Kenwood TR-7400A today, using an omi on the roof several feet from the UHF yagi which is up on the tower, the Kenwood on full power wiped out the front-end on the UHF rig I was using, causing it to go nutty and shut itself off. It seemed to come out of it after being reset. I was a bit worried that it was toast. Reflected signal is low coming in the cable on the Kenwood, however, there is a lot of RF in the shack on full power transmit. The radio itself is a strong emitter of RF coming out of the case, more so than the newer radios. I am going to start setting my coffee cup on the Kenwood when I use it, so the stray RF keeps the coffee warm.
I have been studying and experimenting more with cross-band repeat[...]. Updates to how it works and what is permissible by the FCC can be read on the wiki page about Ham Radio Cross Band Repeater. Maybe I will discuss [...].
In my area our local ham group, the Plattsmouth Amateur Radio Club, we have been experimenting with DMR and SDR. The club president, KB0OGO, did a demonstration of SDR with his new SDRplay receiver. KI0PY has demonstrated MotoTRBO with a Motorola branded HT while I have recently obtained the Tytera MD-380.
I've been building antennas, with my most recent endeavor to build a 6-meter "squalo" horizontally polarized antenna. There is a local 6-meter [...].
About Me
Renewed my interest in radio after over two decades in absentia and obtained my ticket last summer. I hold a General class license and will pursue obtaining the Extra as time permits, which I plan to achieve eventually. I have been working with Part 90 radios as part of my business for several years, which was another motivating factor in my decision to go "full ham." I would like to get a vanity so that my callsign is shorter and less cumbersome for others to remember.
My wife will be taking the Tech exam this summer so that she can enter into the hobby. If she is going to be exposed to RF radiation here at the house she might as well have a license too. I have two children, the oldest boy is 9 and he shows a lot of interest in radio. He wants to be a ham operator, however, he also wants to be Iron Man Tony Stark. My daughter likes to sit next to me when I DX. Her favorite is the Australian broadcast on 9.58. That's my favorite too, reminds me of when I lived in Brisbane.
Memo: Proposal (Please Read)
This memo is something I plan to present to the leadership of local amateur radio clubs in my area. Please read and if you agree, consider printing it and presenting it your own local ARC.
Proposal to Create an Amateur Net for New Licensees
- Download: File:PtCaANfNL.pdf
Update: There is interest in the concept. Discussion is taking place to locate volunteers and select a time and repeater frequency.
About the Novice Net and details and the progress of implementation please see: SW Iowa and Eastern Nebraska Go Net
The name "Tech Net" has been abandoned for the purpose of disambiguation. It is not a technical discussion net. It is a net for those newly licensed to receive an inviting and warm introduction to the hobby.
Recent Equipment Photographs
Transceivers
Transceivers I have collected and used over the years are listed here. I am trying to locate the ones I stored away. Since I have renewed my interest in radio communication after many years (late 80s early 90s) I have started buying here and there again.
Presenting some of my transceivers...
Kenwood TS-940SAT
Kenwood TS-940SAT - A Solid State Competition Grade HF Transceiver. Solid state HF transceiver, radio bands from 160 to 10 meters, general coverage receiver from 150 kHz to 30 MHz, CW, SSB, AM, FSK, and narrow-band FM. 100 Watt out. The S model has no auto tuner, while my SAT has the auto tuner.
This radio was the KING OF HF back in the 1980s and 1990s! It is certainly the KING OF HEAVY. I think it weights around 50-lbs. I can "hear" HF contacts with this radio that I cannot with any of my other HF rigs; it has very sensitive ears.
The auto-tuner does things people won't believe. In a pinch I connected 300 ohm flat to a PL-259 without a balun and directly into the TS-940, on a random length asymmetrical doublet. Not only did the auto-tuner match it to the radio, I could work an 80-meter contact! Warning: do not connect an antenna this way. Like I said, it was "in a pinch," and this is not my working antenna.
The nice thing about this radio is "no menus." Everything is controlled by manual controls on the face. It needed some attention when it came to me. I have corrected some problems with it including the well known PLL lock problem, the sub display not working, and a problem with the auto tuner. I think it is ready for use.
TIP: If you own one of these I recommend connecting both fans in the rear directly to DC power from the contact ahead of the AVR board so that the fans come on and run full time when the radio is on. The temperature sensors that are supposed to turn the fan protecting the finals on is not reliable. I replaced the original fans both with quiet running PC fans and they run whenever the radio is powerd on.
Alinco DX-70T
- Alinco DX-70T HF/6m Tranceiver - Working. This transceiver will cover 160 meters - 10 meters and 6 meters. SSB, CW, FM 1.8MHz-30MHz 100 Watts; 50MHz-54MHz: 10 Watts (AM) 1.8 MHz - 30 MHz 40 Watts; 5OMHz - 54 MHz: 4 Watts.
Yaesu FT-847
- Yaesu FT-847 HF, VHF, UHF All Mode Transceiver. Those marketing people at Yaesu call it The Yaesu FT-847 Earth Station. Here's a stock photo:
I need a DTMF microphone for it. When i got this radio it needed some small fixes. It is a pretty good radio although it lacks some features that will ultimately cause me to replace it with something more capable. I wish it had a true cross-band repeat. It will only cross-band retransmit. Furthermore, it does not have a built in SWR meter or reverse power meter. It only has a "high SWR indicator." It needs more memory channels too.
This radio has excellent digital signal processing built in. Also, it has a built in RF Amp for receive amplification which also works very well. I use a combination of the DSP and notch filter when i work HF so I can hear weak contacts.
Icom IC-2820H
This is my absolute best 2m/440 mobile transceiver! Icom makes quality radios.
- Icom IC-2820H with UT123 board. This is a dual band 2m / 70cm transceiver with optional D-Star digital mode. Mine has the D-Star board installed. I haven't had this radio very long. I will post some pics and a review after I have put some time in on it. There is the Nebraska D-Star Club, and the D-Star Repeater and User Directory. You can register your callsign for use on D-Star.
stock photo
TYT TH-9800
- TYT TH-9800 Quad Band Transceiver. This radio does cover 10-meter but not with SSB so I didn't list it up there. It is strictly AM-FM mode. It is a Chinese knockoff of Yaseau. I got it for under $200 new. looks like:
stock photo
The above is a stock image. I will snap a pic of it as it is hooked up in my Jeep. It was in my service van, however, I moved it to the Jeep recently. It is on an Opek Quad band antenna.
Kenwood TR-7400A
- Kenwood TR-7400A - My old VHF mobile rig. I dug this out of storage but can't find where I put the microphone.
Actual pic: I hooked this up to a VHF HT antenna and a 12v PSU to see if it still worked. Even if I had the mic I wouldn't key down on this type of antenna. I was picking up conversation from a couple local repeaters. Sounded good. When I find the mic I will hook it up in my van and see if it still transmits well enough.
QYT KT-8900
- QYT KT-8900 dual band 20W MINI Moblie radio. This is a noisy little rig that I put in the wife's car. I wouldn't recommend this radio to anyone.
Kenwood TK 880H
Kenwood TK 880H - This is a Part 90 radio which retails with the following feature list: 32 systems / 250 groups (trunked mode), Max 600 channels (trunked mode), Max 250 channels capacity (conventional mode), 12 character dot matririx LCD, 10 character alphanumeric alias. This radio can be programmed for use on Ham bands. Programming is done with KPG-49D software. It is supposed to be 50 watts and programmable for use between 400 to 430 mhz. With a dummy load I tested it at about 30 watts. Requires a serial cable to program, serial on one end, RJ45 on the other.
Clear Channel Ranger AR-3500
- Clear Channel Ranger AR-3500 - In storage. Hand-me-down from a family member. I like my President HR2510 better although this AR3500 is the 100 watt model so it is more powerful. It does have power! This radio is in unknown condition. I haven't powered it up in over 20 years.
Uniden President HR2510
- Uniden President HR2510 - Working however since it hasn't been used much in a couple decades I think it is a bit out of tune. The SWR meter on it never seemed to work well. I used to thump the signal display to get it to register. I have worked this radio a lot and made many contacts. In 1990 I was able to make regular contacts in the UK. Used with the Hy Gain Penetrator antenna, which has to be shorted a bit for 10-meter operation, and during the right solar activity, this radio is great for making long distant contacts on HF band. Here is what it looks like:
When I get this back on a good antenna I plan to make some contacts before this sunspot cycle dries up.
Yaesu Sommerkamp FT-7B
- Yaesu Sommerkamp FT-7B - This was also a hand-me-down from a family member. It once worked, but now doesn't seem to put out any power, low output problem. I plan to take it apart and start with a good cleaning, then go from there.
Tytera MD-380
MotoTRBO / DMR
I have been testing the water on DMR with the Tytera MD-380 which is MotoTRBO compatible. DMR is Digital 2-Way Radio. If you're interested in DMR take a look at Using DMR which is a guide to get you started.
Miscellaneous HTs
- Yaesu VX-2R
- Baofeng BF-F8HP
- Baofeng UV-B6
- Kenwood TK-380K
- Tokmate UHF
Actually I have a box full of HTs mostly China made and a few old Radio Shack "Realistic" models.
Misc Pics
Antenna Systems
- Ringo Ranger (mono 2m) - elevated with the base at 45ft above ground
- 70cm yaga beam - half way up on tower pointed north
- Edison Fong DB-1 Antenna - this is a dual band although is only good for 2m
- 120ft Fence doublet HF - tunes to 40m and when tweeked 80m
- 6-meter horz dipole - on side of tower at about 30ft
- 10-meter inverted dipole - on roof of house. Clips to attach extra length to work 10 - 40 meter
10-meter convertible wire dipole
- homebrew
This is a wire antenna I built. There is a 1:1 balun to which LMR-400 is attached and goes into the shack. The antenna is nearly an inverted V, however, I say it is less inverted than a traditional inverted V. A true inverted V tends to be omni directional. Now the truth of that has relevance to proximity to the ground (must be less than 1/4 wavelength) and band. 10-meter is high enough in frequency you do not want to treat it like you would one of the lower HF bands.
The 10-meter dipole I am using has about a 30 degree angle downward. The length of each side is 94" giving a total dipole length of 15' 8" long. At this length the antenna is resonate on the SSB voice portion of the 10-meter band towards the bottom. Although it is perfectly resonate, I still use the auto-tuning function on my HF radio to protect the finals. According to a hamuniverse article a dipole at 10-meter should be about 16½' long. Mine is shorter, however, the antenna analyzer allowed me to accurately trim it down to resonance and it is a match straight to the transceiver.
Each end of the antenna has a connector so that I may attach extra length to the antenna. I can, for example, attach sufficient length bringing the total dipole length to around 32' - 33' so that I may work 10m - 20m matching ham bands in-between with the tuner. Of course, the more inductor loading required, the less efficient the antenna is. However, on 20m the antenna is again resonate without the tuner.
- Attach
154"107" of additional length to each side of the 10-meter dipole for the 20-meter band.
188" total length on my 10-meter (15' 8")
94" per side
7' 10" per side
402" total length on a 20-meter inverted-V (33' 6")
201" per side
16' 9" per side
201 - 94 = 107" of additional length needed for conversion to 20m
8' 11"
756" total length on a 40-meter inverted-V (63')
378" per side
31' 5" per side
378 - 94 = 284" of additional length needed for conversion to 40m
23' 8"
To 80-meter a lot more length is required. This begins to be a challenge on my urban located property lot. I can build long HF antennas that run North - South. I have a long narrow lot. However, the 10-meter convertible dipole on my roof runs East - West. If my neighbor is not home I can go the extra length to work 80-meter on this antenna. I would not try to use this particular antenna for the 80-meter band.
Notes on Length: On my 40-meter tests using the lengths in the table above 1:1 resonance was right at 7.0 MHz. I shall shorten the antenna and try to match 1:1 at 7.2 MHz.
6-Meter Steel Dipole
- homebrew
I used ½" steel conduit for the poles instead of copper since the steel is more rigid and holds shape better as well as endures the elements better. The first version of this antenna I have used to work the local 6-meter net.
10-Meter Steel Dipole
- homebrew
Tower
I have a Rohn BX40 tower. I would like to eventually go higher. Right now, the BX40 will have to suffice.
It is a free standing tower anchored to a concrete slab. The depth of the slab is below the frost line. Two of the 3 tower legs are grounded to 8ft 1/2" buried copper pipe. I have an HF antenna built on a 120ft stretch across the top of the property line fence. I also use the roof of my house and chimney for various antenna configurations.
Some Local Nets
************************************************************************************************************************************
These nets I have either monitored, to verify, or checked in.
- Current as of: April 2019 (we need more current information to improve this page...)
- VHF Nets local to SW Iowa, SE Nebraska
- HF Nets based out of the tri-state area
- National HF nets are not included
- Local Amateur Radio Operators aka Eastern Nebraska & Western Iowa: Contact w0dbw if you wish to provide updated information for this page, or become a page maintainer!
The physical location of the repeater does not have to be in EN21, however, the repeater must be accessible using ordinary means by a ham operator from within the EN21 area.
70cm Nets
- (442.950+)(FM).. [--T----] Tuesday 8:00pm, Heartland REACT Information Net, Formal, PL-146.2. Open. nc K8UA & K0BNM . [LIVE]
- (443.450+)(FM).. [------S]
CW Practice Net Voice coordination, Wait for code freq announcement 3rd Saturday. Informal. Open.
1.25m Nets
- (224.760-)(FM).. [-MTWTF-]
Weeknights 9:00pm, 220 Ghost Net, Informal, casual chat. - (224.760-)(FM).. [-----F-] Friday 10:00pm, Friday Night Promote the Band Net, Informal, casual chat and 1.25cm related. various nc's.
2m Nets
- (146.940+)(FM).. [S------] Sunday 9:00pm, Douglas County ARES Net, Formal, announcements and checkins only. (147.36+ backup)
- (144.250)(SSB).. [S------] Sunday 8:00pm, 2M Wrong Polarity SSB Net, Informal, Casual, Open Chat. unknown status
- (147.390-)(FM).. [-M-----] Monday 6:30am, Weekly Bible Study Net, open
- (145.290-)(FM).. [-M-----] Monday 7:00pm, Heartland Hams, Formal, announcements and chat.
- (147.390-)(FM).. [-M-----] Monday 8:00pm, Bellevue ARC Protocol Net, announcements, checkins, events info.
- (146.940+)(FM).. [-M-----] Monday 9:00pm, Aksarben Info Net (mostly SWIARC discussion,) Predetermined Subject. Chat.
- (146.820-)(FM).. [--T----] Tuesday 9:00pm, SWIARC Field Events Net, Casual, Predetermined Subject. Chat. nc KE0NEU. [LIVE]
- (147.390+)(FM).. [---W---] Wednesday 8:00pm, Mid-America Council Radio Scouting Net, Casual, To promote radio scouting. nc KD0NMD.
- (146.820-)(FM).. [---W---] Wednesday 9:00pm, SWIARC Club Net, Casual, Open Chat. [LIVE]
- (145.310-)(FM).. [----T--] Thursday 8:00pm, SWIARC Field Day planning Net, SWIARC members. nc W0NEU. [LIVE]
- (145.310-)(FM).. [----T--] Thursday 9:30pm, SATERN Net, General Interest, Public Service/Emergency.
- (146.820-)(FM).. [------S] Saturday 12:00pm, SWIARC, Casual, SWIARC Saturday Noon Swap Net.
- (145.290-)(FM).. [------S] Saturday 7:00pm, Heartland Hams Saturday Tech Net, Informal, novice technical discussion.
(!) indicates a conflict with a previously established net
10m Nets
- (28.350)(SSB).. [----T--] Thursday at 8:00pm. VERIFIED, Casual, wb0gbi, Mitch as net control, Chat.
40m Nets
- (7282)(SSB).. [-MTWTFS] Daily at 1:00pm. Nebraska 40 Meter SSB Net, verified, open, weather, etc.
80m Nets
- (3897)(SSB).. [S------] Sunday at 7:15am, 3900 Club, Early Social Net, open to everyone
- (3897)(SSB).. [S------] Sunday at 7:45am, 3900 Club [http://www.3900club.com/trader-net.html Sunday Trader's Net
- (3982)(SSB).. [SMTWTFS] Daily at 6:30pm, Nebraska Storm Net, verified, rollcall, weather, etc.
- (3970)(SSB).. [.MTWTF.] Weekdays at 6:45am, Eye Bank Net, verified, rollcall, weather and brief QSOs, Iowa, Neb, Kansas, etc.
- (3982)(SSB).. [-MTWTFS] Daily at 7:30am, Nebraska Morning Phone Net, verified, rollcall, weather reports from across the area and announcements.
- (3950)(SSB).. [-MTWTFS] MTWTFS at 8:00am, West Nebraska Net, verified, rollcall
- (3982)(SSB).. [-MTWTFS] Daily at 12:30pm, Nebraska Cornhusker Net, verified, open, weather, etc.
- (3970)(SSB).. [-MTWTFS] Daily at 6:00pm, Iowa 75 Meter Traffic Net, short, verified
- (3977)(SSB).. [------S] Saturday at 8:00am, Unnamed Vintage Radio Net, verified, discussion vintage transceivers, anyone welcome.
- (3982)(SSB).. [------S] Saturday at 8:30am, QCWA Net Omaha Chap 25, verified, Quarter Century Wireless Association.
Classifieds], open to everyone
160m Nets
- (1995)(SSB).. [-MTWTF-] Daily at 8:00pm, (updated for DST) Nebraska Weather Net, verified, rollcall, weather, etc.
End of Nets Listing ************************************************************************************************************************************
END OF LIST
unknown nets
- 147.360 ..... 7:30pm Sunday .
K0BOYIowa Echolink net, mostly Iowa repeaters. reported: Sunday, July 17, 2016 . To verify this net has to be received 4x since reported. [no] verify repeater [na] verify occurrence : report: This was not K0BOY. It was a repeater in Lamoni Iowa received VHF propagation. repeater group linked via echolink has a Sunday 7:30pm net [.][.][.][.][.] - 146.790 ..... (PL:136.5) Sunday at 8:30pm . Rollcall style net . [ N0FHQ ] AA0OS, AC0BU, WU0E, W0JW, WB0WKQ, W0SMS, N0BKB, N0JMH, N0ORU, N0VPR, N0DRT, K0RDE, K0YKC, K0MHJ, KC0DUA, KC0MFW, KE0TWE, KC0TTO, K0FFX, KB0TUX, K0VFK, K0WRQ, K0DQQ, K?0UFO, K1SLR, KN0WNE, N0JAR, K0IAY, KE0CBE, W0WHH, N0TJA, KD0DK, WU0E [x][.][.][.][.]
- 3.916 ..... 9:00pm Friday . trivia . unknown location
Local Repeaters
The first link is a google docs spreadsheet with all of the local repeaters near the EN21 Grid Square Map. These are repeaters that cover Omaha, Bellevue, Plattsmouth, and Council Bluffs.... Nebraska and Iowa.
Currently 2m and 70cm only:
last updated: Sunday, April 17, 2016
The following is a repeater list obtained from an online source. It may be out of date.
extended range repeaters
Some repeaters that can be used when propagation permits.
- 146.790 Creston Iowa PL:136.5 - useful to check on VHF conditions. about 100 mi. - see: http://www.midiowaskywarn.org/resources/repeaters/
- 442.400 Arispe Iowa PL:151.4
- 147.360 Lamoni Iowa PL:???
- 145.265 - (7/30/16) ??? PL:none - seems to be a fusion/analog repeater supporting wiresx. Could be KD0PGV
- 146.745 - (9/30/16) K0BVC PL:136.5 - Good Morning w/Radio IRLP Net Mon-Sat at 9 AM.
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For Sale
ITEM DESCRIPTION PRICE
----------------------------------------------------- --------
Cobra 124 GTL - (used) expanded 365 channels ............. $ 350.00 --- --- tested, fully functional.
Cobra 1000 GTL (used) .................................... $
Tokmate TU30 (new) Handheld UHF 400-480MHz ............... $ 55.00 --- --- NIB, will program for you
at no additional cost.
Kenwood Tk-880h -1 70cm .................................. $ 125.00 OBO --- used, excellent cond
The Hy Gain antenna was damaged by a storm. What remains has been sold. I had a second one in storage. If I can locate it I might post it here for sale.
Update: second Hy Gain P500 was disposed of by my parents, probably scrapped for metal round up on the farm.
Cobra 142 GTL expanded for 365 channels operate 10-meter USB and LSB.
Sun Spots
Sunspot numbers wax and wane in an approximately 11-year cycle. Solar Cycle 1 spanned the years 1755 to 1766. The last, Cycle 23, peaked in April 2000 with an average of 120 sunspots per day around the time of maximum. The last minimum part of the cycle bottomed out in December 2008, was the longest and quietest in over a century. Cycle 24 is occurring now in 1014 - 1015. Cycle 24 is a disappointing cycle. 10-meter DX depends largely on solar activity. Skip on 10-meter is active now and predicted to remain active until 2018 or shortly thereafter. It is a weak sunspot cycle, however, it is enough to provide for skip.
Cycle 24 actually peaked in 2014.
We need more sunspots! Join my campaign to lobby Washington to pass a bill that creates sunspots. Click HERE to send us your donation.
Sun Spots and band conditions
Take a look at the SFU (Solar Flux Units) which is a number from calculation of the number of physical sun spots, their size, and other facts involving how the sun interacts with our atmosphere.
The Alpha (Ap) index and Kilo (Kp) index help you determine if there is a solar storm or other geomagnetic activity that can have a negative impact on communication. Ap is an average and Kp is immediate. If this number is higher than 3 then there is a lot of geomagnetic activity such as a geomagnetic storm that will negatively impact propagation.
It is best to have a high SFU (starting at about 100) and low values for Ap and Kp (below 3).
SFI index: Solar Flux Index ; it is a gauge of how much solar particles and magnetic fields reaching our atmosphere. The higher the number, the better HF propagation should be. Below a value of 70 propagation is miserable.
SN: Sunspot Numbers: This value is the visible number of spots on the Sun’s surface. Solar flux (SFI) and Sun spots (SN) numbers need to be high AND sustained to make a major impact on propagation.
The A Index: It’s simply an index of geomagnetic activity derived from a scaled average of the previous 24 hours K-index readings. Values below 5 are great and above 9 are miserable.
The K-Index: A gauge of geomagnetic activity relative to an assumed quiet-day. Falling numbers mean improving conditions and better propagation particularly in northern latitudes.
Skip
VHF
- 6m : sporadic, mostly daytime.
HF
- 10m : evening propagation and daytime mostly and during high sunspot period of solar cycle.
- 12 - 17m : daytime bands, usually opened.
- 20m : Can be opened day or night. This is a reliable band for DX.
- 40m : local skip during the day, DX at night.
- 80m : local skip during the day, longer distance DX at night.
MF
- 160m : night propagation. local skip.
Hy Gain Penetrator
The Hy Gain Penetrator antenna designer Howell Pabian is now retired in the Lincoln, Nebraska! That's where I ordered my antennas from. A little 2-way radio shop that once existed on O Street.
Hy Gain Penetrator Facts:
- 5/8 wave ground plane antenna.
- shorten the vertical radiator for 10-meter use.
MFJ now owns the rights to Hy Gain in name. lb
A new version of the antenna is back in production.
- Hy-gain SPT-500 (fall in love again!)
Investigating
Downeast Microwave DEM 222-28CK
This is a transverter to use your 10-meter all mode transceiver on the 1.25m band.
Icom IC-9100
Base Amateur HF/VHF/UHF Transceiver
Frequency range 10-160 m + WARC / 6 m / 2m / 70cm
23cm + D-Star optional, Requires 13.8 VDC at 24 amps. 12.5 x 4.6 x 13.5 inches 24.3 lbs.
- used value: $1,800.00 - $2,025.00
- new value: $2480.00
- built in SWR?
NOISE CANCEL/SIGNAL ENHANCER - Comparator
- MFJ-1025
- MFJ-1026
- ANC-F
Equipment: Connect Systems CS750 DMR Digital/Analog Radio
Digital Mobile Radio (DMR) - The new CS750 is the first DMR-compatible radio to be designed specifically for the Ham market.
- $210
Equipment: Yaesu VX-3R VHF/UHF DualBand Handheld -vs- ZASTONE ZT-2R+
The Yaesu Receives 0.5-999Mhz AM/FMN/FMW, Transmits 144-148 & 430-450Mhz VHF/UHF FM Output is 1.5W Vhf, 1W UHF
The ZASTONE ZT-2R+ TX Frequency Ranges: 144-146 MHz 430-440 MHz (but no info on AM/FM)
Icom ICR6 Broadband Receiver
0.100 ~ 1309.995MHz in AM / FM / WFM.
Yaesu FT-736R
The Yaesu FT-736R all-mode transceiver incorporates up to four band modules covering the 50, 144, 220, 430, 440 and 1200 MHz amateur bands. The FT-736R is supplied standard with 2 meters and 440 (at 25 watts output). Standard modes are SSB, CW and FM. This radio has operating conveniences usually found only on HF transceivers, such as IF shift, IF notch, keypad entry, noise blanker, all mode VOX and three-speed selectable AGC. The memory system includes 100 general purpose memories, 10 full duplex cross-band memories and 1 global call channel, all of which store mode and frequency.
$615.00 / $667.61 Used: Excellent $670.00 / $715.00 Used: Excellent with optional 6m and other addons $645.00 / $697.61 Used: Excellent $520.00 / $560.00 Used: Good with FTS8 tone unit
The Yaesu FT-726R (726 rather than 736) is an older unit that is lower power, only 10w. These typically sell for $200 less than the FT-736R and I would not recommend paying over $400 for a used working model.
misco
- Cushcraft A224WB - 1.25M beam
- M2 Antennas 2225SS - 1.25M beam
Scanning the LW, MW, and SW dial
Day Night kHz use location language comments
X 0.330 CW X 3.215 AM SW english news, political X 3.330 AM SW english automated beacon X 3.618 LSB ham english X 3.625 LSB ham english X 3.700 LSB ham english X 3.908 LSB ham english X 3.908 LSB ham english X 3.916 LSB ham english X 3.936 LSB ham english X 7.138 LSB ham english X 7.217 LSB ham X 7.385 AM SW english religious X 7.455 AM SW english religious X 7.489 AM SW english X 7.569 AM SW english X 9.395 AM SW english X 9.474 AM SW english religious X 9.790 AM SW english X 9.800 AM SW english news X 9.955 AM SW english religious X 9.975 AM SW english X 9.980 AM SW english religious X 11.550 AM SW spanish X 11.670 AM SW foreign X 11.780 AM SW foreign X 11.825 AM SW english religious X 11.840 AM SW foreign same as 13.743 X 11.950 AM SW spanish strong signal X 12.160 AM SW USA english midwest USA, call in talkshow X 13.743 AM SW foreign X 14.670 AM SW Canada english radio beacon X 15.120 AM SW foreign X 15.230 AM SW spanish X 15.370 AM SW spanish same as 15.230 X 15.700 AM SW China english China radio propiganda, news, strong signal X 18.155 USB ham english
Listen to HF ham radio streaming online
I would like to thank wd0cfc for bringing this web site to my attention which allows you to pick from a number of ham listening stations on various HF bands and at different geographic locations in North America.
Using Software Defined Radio and a good broadband connection these operators have their SDR receivers set up to stream over the Internet. Browse though the list of stations. Location, antenna type and frequency coverage are among the information posted for each station. I can even tune the station VFO and apply digital filters.
LO WebSDR HF receiver system at Lobitos Creek on the Pacific coast south of San Francisco, CA http://69.27.184.62:8901/ CM87tj; 40 users
Wavelength to Frequency Table
Meter Band Frequency Range and Use -------------------------------------------------- 160 meter 1800 - 2000 kHz ham radio 120 meter 2300 - 2498 kHz broadcasting 90 meter 3200 - 3400 kHz broadcasting 80 meter 3500 - 4000 kHz ham radio 60 meter 4750 - 4995 kHz broadcasting 49 meter 5950 - 6250 kHz broadcasting 41 meter 7100 - 7300 kHz broadcasting 40 meter 7000 - 7300 kHz ham radio 31 meter 9500 - 9900 kHz broadcasting 30 meter 10100 - 10150 kHz ham radio 25 meter 11650 - 11975 kHz broadcasting 22 meter 13600 - 13800 kHz broadcasting 20 meter 14000 - 14350 kHz ham radio 19 meter 15100 - 15600 kHz broadcasting 17 meter 18068 - 18168 kHz ham radio 16 meter 17550 - 17900 kHz broadcasting 15 meter 21000 - 21450 kHz ham radio 13 meter 21450 - 21850 kHz broadcasting 12 meter 24890 - 24990 ham radio 11 meter 25670 - 26100 kHz broadcasting 10 meter 28 - 29.7 MHz ham radio 6 meter 50 - 54 MHz ham radio since 1947 5 meter 56 – 64 MHz taken from ham radio in 1946 4 meter 70.000 MHz – 70.500 MHz 3 meter 76 - 88 MHz 88 - 108 MHz broadcasting 2 meter 144 MHz to 148 MHz for ham 1.25 meter 219 - 225 MHz 70 centimeter 420 - 450 MHz ham 462 - 468 MHz non-ham public 33 centimeter 902.000 MHz – 928.000 MHz 23 centimeter 1.240 GHz – 1.300 GHz 13 centimeter 2.300 GHz – 2.450 GHz
mobile antennas
CSB-770A
Comet's BEST DualBand Mobile Antennas 2M/440MHz high gain antenna Gain& Wave: 2M 5/8 wave 4.4dBi 440MHz Two 5/8 waves 6.9dBi VSWR: 1.5:1 or less Max Power: 150W Length: 50" Connector: Gold-plated PL-259 Fold-over hinge included
Tram 1180
2M/70cm 5/8 wave mobile antenna 37.5" tall NMO mount eham: 4.1
CA-2x4SR The Comet CA-2x4SR dual band is a 2 meter and 440 MHz mobile antenna. It is a 5/8 wave on 2 meters providing 3.8 dB gain and a 5/8 wave on 440 MHz providing 6.2 dB gain. VSWR 1.5 : 1 or less. This antenna can handle up to 150 watts. This antenna is black with three coils on the whip element. The CA-2x4SR is pretuned, but an Allen wrench for adjusting is included.
This antenna is 40 inches (1.02 m) high. The connector type is UHF
OMMRS
OMMRS - Omaha Metropolitan Medical Response System - www.ommrs.org
- http://www.ommrs.org
- http://www.ommrs.org/links.php
- http://www.mdares.org/home/index.php/ommrs
- http://www.nebraskamed.com/nebraska-icap/meet-the-team
- http://www.nebraskamed.com/biocontainment-unit/links
- http://www.preped.org/about-us/staff/
Local Amateur Web Sites
Facebook links are NOT included here. A facebook page is not a web site.
club
- Plattsmouth Amateur Radio Club - Plattsmouth and Murray Ne.
- Heartland Hams Amateur radio Club - including Glenwood Ia.
- Southwest Iowa Amateur Radio Club - including Council Bluffs Ia.
- South West Iowa Amateur Radio Association - including Creston Ia.
- Story County Amateur Radio Club - including Ames Ia.
- Pawnee Amateur Radio Club
- Nebraska Tricity Amateur Radio Club - including Scottsbluff Ne.
individual
other
power supply
Most modern power supplies are the switching type while older power supplies are the linear type. The linear type are not very energy efficient and they are also larger and weigh a lot more.
Note to Moderator / Admin
Please contact me prior to considering making modifications to my own user page.
