[TenTec] Scratching my head- what could be wrong?

[Walter S Delesandri]

.1 audio bypasses???? heheheheh  there are a number of people I wish I 
could convince to use  .1 bypasses on ALL audio leads.....hi hi hi

Maybe 200pf?

Walt

On 8 Apr 1999 14:41:24 -0500 rohre <rohre@arlut.utexas.edu> wrote:
> 
> Check for missing/bad RF by pass caps on the audio leads to the mike, and
> maybe on the push to talk leads.  Place these right at the connector inside
> the radio, and use 0.1 mf disc ceramics as a start.  Might try some ferrite
> beads there as well.
> 
> In some TT production runs slight rearrangement of wiring could lead to hyper
> sensitivity to RF, if other conditions of bypassing are not optimum.  I
> presume you have rig bonded with braid or copper strap to a common point for
> other equipment cases, and the ground side of the antenna feed, but are you
> feeding coax in the shack or ladder line?  Check all coax jumper shields, I
> have had those break inside coax connectors and play havoc like you describe
> on my Scout.
> (RF in audio).  Sometimes, a design uses a lower cost cap, and if it was say a
> 0.01 mf disc, then there should be added a 0.1 mf in parallel with it to
> common, with zero lead length if possible.  How far is your antenna from your
> rig?  Are you on an upper floor of the house, or at ground level with the
> shack?
> 
> Hope these points help,
> 
> Stuart K5KVH
> 
> --
> FAQ on WWW:               http://www.contesting.com/tentecfaq.htm
> Submissions:              tentec@contesting.com
> Administrative requests:  tentec-REQUEST@contesting.com
> Problems:                 owner-tentec@contesting.com
> Search:                   http://www.contesting.com/km9p/search.htm



--
FAQ on WWW:               http://www.contesting.com/tentecfaq.htm
Submissions:              tentec@contesting.com
Administrative requests:  tentec-REQUEST@contesting.com
Problems:                 owner-tentec@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm