The following lines were added (+) and removed (-):
<del>Radio Shack produce a model called the HTX100 branded under Realistic trademark or the name Radio Shack. The HTX100 was a crippled version of the President HR2510</del>. The Emperor TS-5010 is also comparable, and has the same output finals. The HR2510 and TS5010 transmit up to about 30 watts. <del>Radio Shack produce a model called the HTX100 branded under Realistic trademark or the name Radio Shack. The HTX100 was a crippled version of the President HR2510</del>. The Emperor TS-5010 is also comparable, and has the same output finals. The HR2510 and TS5010 transmit up to about 30 watts. The HR2510 included a full frequency compliment in the processor making it easy to open up for use on Citizen Band. Uniden discontinued the HR2510 under pressure from the FCC and released a crippled HR2600, a similarly featured radio, which no longer included the CB bands, but included some additional enhancements for 10 meter FM use.<nowiki>**</nowiki>''This has been challenged. A transceiver that can transmit both on Citizen Band and Amateur Radio is not legal in the U.S.''<nowiki>**</nowiki>''This has been challenged. A transceiver that can transmit both on Citizen Band and Amateur Radio is not legal in the U.S. However it is a fact that the HR2510 is legal for amateur radio use as long as the radio has not been modified to operate out of band. Now since this was sold as a 10 meter radio you have to have it converted for it to work on the CB bands. There are a couple of different ways to do the modification and the results can vary - in some cases you may lose certain functions if you do the mod - or the freq will not display the correct channel - or in other cases you can add additional functions as is the case with the chipswitch modification. Once converted the HR2510 can have coverage from 24.800 - 29.999 MHz. {{:Template:Opinion Entry}} ==specifications==RF Power output: AM/FM/CW: 10 W and SSB: 25 WDeadkey on these radios from the factory was around 8-10 watts and should not be set any higher.Standard features included Volume, Squelch, R.F. Gain, and a receive-only RIT control. Other features included a P.A. function, a switchable roger beep, a two position Mike Gain switch, and an effective Noise Blanker. The 10 segment LCD bar graph meter included S/R.F. and SWR functionality.The frequency plan for the CB band, as well as the upper and lower portions of the "freeband", is included in the factory microprocessor's tuning tables, which only required a simple modification to enable.The nomenclature is said to be something like this: the HR stands for Ham Radio, the 25 is for 25W PEP which is the output power, and the 10 because it's a 10m radio. This is not a confirmed or published fact, merely what has been stated by operators and is widely believed. Factory frequency coverage: 28-29.7 MHz<BR>Modified frequency coverage: 26-29.999 MHzBands: band selector switch after modification A. 28.000 - 28.490 B. 28.500 - 28.990 C. 29.000 - 29.490 D. 29.500 - 29.690 E. 26.000 - 26.490 F. 26.500 - 26.990 G. 26.965 - 27.405 H. 27.000 - 27.490 I. 27.500 - 27.990==modification==There are many mods available for this radio. However, some of the power output claims are false. One common completely false claim was that the pre-driver and final could be modified to get 90 Watts PEP output from the President HR-2510. This resulted in high sales of Motorola transistors necessary for the mod. In reality you can achieve an average increase of 15 Watts PEP or less than a 50% increase in output power. This increase amounts to approximately 1.5 dB or 1/2 of an “S” unit. The caution is that this might be at the expense of worse harmonics.===Repeater Split Mod===Avoid this mod. The use of switching diodes across the IF crystal filter in this mod will make it transmit dirty and destroy the diodes. Use a chipswitch==service and repair==The original transmit final transistor, the MRF 477 has been discontinued, and supplies have all but dried up. If you run out of spares, you are basically left with few options. It is possible to adapt a Japanese replacement transistor, but power output will likely be less. You can also retrofit the beefier MRF-450, 455 or similar stud mount "pill" type transistors. Power output will still not be as good as the original, but it will be a more reliable device.