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#Post#: 4--------------------------------------------------
Galaxy DX-959 Microphone Gain Modification
DIR By: kycbradio
Date: October 5, 2018, 3:03 am
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Galaxy DX-959 Microphone Gain Modification
Microphone Gain Modification:
The DX-959 has plenty of modulation to spare but it lies dormant
as the factory settings "choke" it's true audio capability. This
can be remedied, however!
Q39 is the modulation limiter for the DX-949 and DX-959.
However, don't be foolish by removing the limiter. Why? The
limiter is there for a reason! Removing the limiter altogether
on the DX-959 will cause severe garbling in sideband mode.
Instead, place a 1k resistor in series with the emitter leg of
Q39. This used in conjunction with finding a satisfactory
balance between adjusting VR16 along with the Mic Gain on the
radio, and using a good amplified microphone will provide as
much modulation as desired.
Many 959 owners report excellent results by just peaking VR16
and balancing their Mic Gain on the radio with an amplified
microphone (without adding the resistor). All I did with my
radio (no resistor) is peaked it just right with the screwdriver
and now it's LOUD and PROUD. All without clipping the mod
limiter. That's simply just a no, no with any radio!
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