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View and Download President HR owner’s manual online. 10 Meter Amateur Transceiver. HR Transceiver pdf manual download. Also for: Hr View and Download PRESIDENT HR user manual online. 10 Meter Amateur Mobile Transceiver. HR Transceiver pdf manual download. PRESIDENT LINCOLN (HR ) MODS by Roger Perales ~ perales Conversion of this text from html format to PDF by Frank TomeŇ°.

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There are lots of good descriptions of mods floating around to enable the RIT to function on transmit, so I won’t re-invent the wheel here. I have majual tried this mod, If maanual else has, please let me know the results.

It just so happened that I lived two blocks from a grain elevator at the time, and the truckers waiting to offload their grain liked to sit on CB and yak. Probably not worth it, especially with the solid-state amps that are out there on the market.

Zdravim ono je to skoro jedno, protoze shogun je po VF strance temer identicky s lincolnem vcetne jeho nesvaru.

President HR2510 Owner’s Manual

Send E-Mail to rogerbird juno. Put the radio on If you get an external amplifier, just make sure you get one that is actually linear; many of the cheaper so-called ‘linear amplifiers’ operate in a class-C mode with no bias, and splatter the band horribly when used for SSB or AM. That would be interesting!

As can be seen from the graph, the HTX filter is indeed significantly narrower than the filter. The new transistor has a different pin out from the original.

Check your work manul make sure you did not short anything out and that you placed the capacitor in the right place. I always thought the RX audio on the sounded he2510 little wimpy, even with an external speaker. This seems to have been a major design screwup on Uniden’s part. A sweep test of the audio chain from the collector of Q to the speaker showed an overall response of about Hz to Hz. But how can this be?

Find the red wire 8 Volts on the mode switch PCB and solder the orange wire to it. The Mic uses ground to activate the 5 Khz step control of the Up or Down buttons. L Connect the oscilloscpe to TP Connect a Frequency counter to TP What these mods do is to disconnect the 5Khz steps and allow the Mic buttons to do what the Rotary switch does. The owners of this page DO NOT warranty any of this information, nor accept any responsibility of how you use its content.


There is a convenient ground loacted just behind L Adjust L for 6. This is a 3 pin transistor bolted to the left side mannual the case next to VR You can’t go wrong with these folks. To change the duration length of the beep, h2510 C 10uf 16v remove and replace with a capacitor at least 50v with more or less capacitance to lengthen or shorten the beep to your preference. It’s just personal preference on my part, but that tiny knob doesn’t make a real great VFO.

This will be a three-pin voltage regulator located just to the right of the large microprocessor IC With the radio upside down and the PLL board facing you, Remove the four screws in each corner of the pll board. To get more, Q is the Mic Attenuator, This limits the audio. If it is not soft enough to peel off, you can use a W hair dryer to heat the epoxy enough to remove it. Basically they are about the same, You need to disconnect the existing voltage from the clarifier RIT circuit and add a constant voltage to the clarifier RIT control circuit.


Be careful how high you set the AM power, also. That’s all there is to it! Examination of the schematics for both radios showed that the RF sections were indeed almost identical. It is not my intention to cover ground that has already been covered by others; there are many fine resources on the web describing various mods and enhancements to these rigs.

So if you double your output, you will see half an S-unit on the other end. Connect the output wire from the Isolation resistor on pin 10 hhr2510 the CMOS IC to the 2nd trace from the top ht2510 on the frequency knob. Replace the covers and the screws, you should now have between 50 and watts on SSB. Loosen the four screws on the sides of the radio that hold the PLL tray in the radio.


Scan-This allows you to set a range of frequencys in any band, and even set the hold time during scans. Connect the scope to TP, and adjust VR for the cleanest sine wave.

Zdravim vsechny, jiz nekolikrat se mi vyplatilo nechat si poradit, proto by mne i dnes zajimal Vas nazor: After installation all the controls should work normally, and when pressing and holding the mic buttons the frequency should slide up or down the band at about 2 increments a second.

PRESIDENT HR2510 User Manual

Any value between and picofarad pf will do. Remove the cover on the speaker side of the radio. Q is located near the front of the circuit board in the center to the left of ICabove C Remove diode D and Transistor Q These adjustments control the frequency of your carrier oscillators, and will knock your audio out of whack if not adjusted to spec. Bill Nadzam was very patient in working with me on a problem that it turned out was of my own creation.

This will increase the amplitude of the beep. Please send me your web pages in html format or if you have it in some word processor writed and the pictures in the gif or jpeg format. Connect a watt meter and a dummy load to the antenna jack. To adjust them, you need a good scope with at least 60 MHz bandwidth MHz would be better. If you write me with a question about modifying your radio or where to buy an amplifier, without providing a verifiable ham callsign, I will not answer your email; furthermore, your email will be forwarded directly to the Federal Communications Commission, or to the radio regulatory agency of your country.