PRESIDENT HR2600 Service Manual download pdf (Page 9)

With the radio on USB, Adjust VR112 for 80mA +/- 5mA on the DC Ammeter.

After the adjustment is complete, Reinstall the B002(PB-100) jumper board. ]

10). inject a two tone signal into the microphone of the radio while transmitting into a dummy load.

Set VR104 (ALC) for maximum output..

Retune VR107 ( AM /FM carrier level) for Maximum.

Retune VR103(CW carrier level) for Maximum

11). Again inject a two tone signal into the microphone of the radio while transmitting into a dummy

load. Spread or contract coils L121 & L123 for the highest power out in the center of the band.

12). Replace the covers and the screws, you should now have between 50 and 100 watts on SSB.

This mod was originally written by M.T. Stacey, KC4HGH in an article published in CQ

magazine of September 1989 on page 48. There was also supposed to be an Update in

73 magazine

of November 1989 on page 76, Although I have never been able to find a copy to verify it.

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PRESIDENT HR2600 Service Manual Page 9