Modifications for the Uniden HR2510

19-07-1998 HR2510 - Lincoln Web site English language (0 Kbytes)
19-07-1998 Tips and trick for the HR2510 English language (18 Kbytes)
19-07-1998 Information on the HR2510 10 meter radio English language (1 Kbytes)
19-07-1998 Expanded frequency coverage for the Uniden HR2510 English language (2 Kbytes)
19-07-1998 Speed up the AGC for Uniden HR2510 English language (3 Kbytes)
19-07-1998 Output power mod for the Uniden HR2510 & HR2600 English language (3 Kbytes)
19-07-1998 HR2510 RIT-control mods English language (2 Kbytes)
03-01-1999 Adding 24-26 MHz to the HR2510 & 2600 English language (3 Kbytes)
20-10-2001 Frequency modification: President/Uniden HR-2510 English language
20-10-2001 HR2510 Modification for increased MicGain English language (7 Kbytes)
20-10-2001 President or Uniden HR-2510 Variable Power Modification English language (8 Kbytes)
20-10-2001 Increasing the power output for the HR2510 or Lincoln English language (11 Kbytes)
20-10-2001 HR2510 Hi-Power modification (Better and easier) English language (17 Kbytes)
20-10-2001 Modification of the HR2510 Mic buttons to operate the VFO English language (18 Kbytes)
20-10-2001 Talkback removal English language (15 Kbytes)
20-10-2001 HR2510 RIT / Clarifier Mods English language (4 Kbytes)
20-10-2001 HR2510 Misc. Enhancements English language (6 Kbytes)
20-10-2001 24 MHz Broadband instructions for your HR2510 English language (9 Kbytes)
20-10-2001 HR2510 Alignment Instructions English language (18 Kbytes)
 View all modification in one click. This can be a very big file.!! (151 Kbytes)

20-10-2001
Frequency modification: President/Uniden HR-2510
Author: VE2XQQ


Remove the cover on the speaker side of the radio. You will need to loosen the 4 screws (2 on each side) that secure the SYNTH PCB Frame to the chassi. - You do not need to remove these screws - You need to remove the 4 screws that secure the SYNTH PCB to the metal frame.

Now flip the SYNTH PCB over, Locate the pins of the Microprocessor. In some versions of the HR2510 there may be Grey Epoxy covering one end of the Microprocessor. You may be able to peel the epoxy right off to expose the pins of the IC. If it is not soft enough to peel off, you can use a 400W hair dryer to heat the epoxy enough to remove it.

Cut the ground trace connected to pins 34 & 35, jump pins 34 & 35 to the free end of Resistor pack RR301 (see diagram) or connect a 4.5K -15K ohm resistor from pins 34 & 35 to pin 3 of IC312 (5V regulator).

This will give complete coverage from 26.000 MHz to 29.699 MHz (Some radios will go to 29.999 MHz)

Thanks toVE2XQQ for the mod and schematic.

This modification is read 555 times.

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