Galaxy dx-66 squeals on talkback
timspur, hi. First off, using the talkback with a tuned Galaxy will give you problems, so you need to use a good noise cancelling mic like a RK 56, or Astatic 636. If your running an amp, that will only amplify the problem. Here is a mod if your comfortable working on your radio, to tone down the TB volume.
Talkback can become distorted if these radios have been "peaked," and there is no cure because the talkback
just amplifies what goes to the RF section. Try adding a 470k ohm
resistor from junction of C155/R207 to the junction of C187/R235 on
the solder side of the board. This will also give you clean talkback on
SSB and FM. Try different values of resistance to get the amount of
volume you want. The less the resistance the louder the talkback will be.**
Hope this was what your looking for,, I know for a fact that the Astatic mics do help tone it down.
Let us know,,, Mechanic
Mar 12, 2008 |
Galaxy Radios DX-66V Base CB Radio