💾 Archived View for gemini.spam.works › mirrors › textfiles › hamradio › MODIFICATIONS › hr26002.ham captured on 2022-07-17 at 02:14:20.
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HR2600.2 Date: Sat, 24 Nov 90 22:55:50 EDT From: kd2bd@nn2z.nj.usa.na Message-Id: <13461@nn2z.nj.usa.na> To: all@allbbs Subject: Uniden HR2600 on VHF/UHF Hello Folks! I recently purchased a Uniden HR2600 and a Microwave Modules MMT 144/28 2-meter linear transverter and got both interfaced and working well. The HR2600 has an output power of 25 watts PEP on SSB, CW and 10 watts on AM and FM. The transverter requires only 0.25 to 25 mW of 28 MHz drive for proper operation. In an effort to reduce the HR2600 output level to the level required by the transverter, I removed PB-100, a small double-sided copper coated circuit board located under the top cover that supplies +Vcc to the driver and final amplifier stages. I then soldered a jumper between TP2 and TP4, the outermost prongs that hold PB-100 in place. This action provides the HR2600 driver with full +Vcc, but removes +Vcc from the MRF 477 final power amplifier. There is more than enough driver energy fed through the final to excite the transverter in this configuration. I've received good signal and audio reports from all the locals when using the transverter and the HR2600 with this simple modification. I believe this modification could make the HR2600 useable with other transverters as well. 73 and Good DX! de John, KD2BD