radios:ft-2980r
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Table of Contents
Modifying a Yaesu FT-2980R transciever for packet usage
More to follow…
The FT-2980R is a beast of a transceiver putting out up to 80W FM on 2m. From spending a little time using it for 2m simplex nets and whatnot it is an excellent radio; the receiver is (anecdotally) an S-point “better” when compared to my other radios (FT-8800R, FT-857D, FTM-300D). S1 stations which were unreadable come through more clearly on the 2980R, and impact from local QRM seems much reduced.
I always thought it would make an excellent packet radio, but in their wisdom Yaesu never put a 6-pin Mini-DIN connector on the back - so this article will address that shortcoming!
Schematic detail
- Pin 9 of Q1028 is the output from the discriminator
- Junction between C1122 and C1123 is de-emphasised audio before the RX-MUTE circuit
- Junction between C1276 and Q1003 is the DC-coupled input to the modulator
- TP1008 is MIC audio input, to then be processed / emphasised by Q1049 / Q1043 etc
- PTT is achieved by grounding PIN1 of the MIC connector (front panel board)
Tap points
More to come
Finished mods
More to come
Rear connector
More to come
Other tweaks
More to come
Finished article
More to come
Test data
More to come
radios/ft-2980r.1745477416.txt.gz · Last modified: 2025/04/24 06:50 by m0mzf