[ICOM] R-71A audio Problem

[Gary P. Fiber]

The IC-R71A also has the very same VCO as many of the older Icoms have. 
Most generally distorted audio is caused by a faulty VCO trimmer cap.
If you change out one do them all there are 4 VCO trimmer caps. You may 
get by checking and possibly doing a realignment on the R-71A's VCO 
section. if a cap is faulty it may not last long however.

There could be other issues causing this too like a faulty power supply, 
bad BFO crystal, BFO crystal trimmer cap, voltage regulator etc.

Gary K8IZ


On 7/31/2011 10:54 AM, David wrote:
> Greetings. My R71A works perfect except that it has developed distorted
> audio and high back ground noise level. Before I delve into it, has anyone
> else had this problem and what did you find.
> Thanks for any help you can send my way.
>
> Dave   VA7DG
>
> ----
> Your Moderator: Dick Flanagan K7VC: icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/
> To support QSL/QTH.net: http://www.qsl.net/donate.html
>


-- 
Gary Fiber K8IZ
GROL PG-19-6691 with shipboard radar endorsement
Washington State resident