Hi All,

I picked up a D104 Silver Eagle and was observing the output of my
scope.

I see that it appears to clip out the negative peaks which makes the on
the air sound distorted. I checked the audio with the output
terminated into 100K and also tried various settings and battery
voltage levels.

Any thoughts?

de KJ4UO

Just a guess -- but maybe an impedance matching problem
See URL:
http://www.kb2ljj.com/data/mic/D-104.htm

--
CL -- I doubt, therefore I might be !






wrote in message
ups.com...
Hi All,

I picked up a D104 Silver Eagle and was observing the output of my
scope.

I see that it appears to clip out the negative peaks which makes the on
the air sound distorted. I checked the audio with the output
terminated into 100K and also tried various settings and battery
voltage levels.

Any thoughts?

de KJ4UO

Another thought - the Silver Eagle is an amplified D-104.
Bypass the amp and see what you get.
A friend had a bad amp in the base of the D-104

--
CL -- I doubt, therefore I might be !






"Caveat Lector" wrote in message
news:TCUVf.14386$6a1.5913@fed1read04...
Just a guess -- but maybe an impedance matching problem
See URL:
http://www.kb2ljj.com/data/mic/D-104.htm

--
CL -- I doubt, therefore I might be !






wrote in message
ups.com...
Hi All,

I picked up a D104 Silver Eagle and was observing the output of my
scope.

I see that it appears to clip out the negative peaks which makes the on
the air sound distorted. I checked the audio with the output
terminated into 100K and also tried various settings and battery
voltage levels.

Any thoughts?

de KJ4UO

Caveat Lector wrote:

Another thought - the Silver Eagle is an amplified D-104.
Bypass the amp and see what you get.
A friend had a bad amp in the base of the D-104

They're also prone to be affected by rf. I had a coiled cord on mine
and had to run a direct wire inside the cord from the base to the mic
plug to get rid of the rf.

-Bill

OK. Have you checked with varying the settings of the 5k pot in the amp
section? - have you checked that the battery volatge is correct (ie,
measured it?). If that doesnt work, connect your CRO across the mic.
capsule and see if its the cause of the problem..... If its the amp,
shouldnt be too hard to troubleshoot - even if you shotgun replace
EVERY component on the board its a simple job. For schematic, just
Google for it - for some reason, I cant copy the link to this reply.

Andrew VK3BFA.

Good advice -- here is a D104 Schematic - Doesn't say Silver Eagle but think
it applies

http://www.astatic.com/cb/pdf/d104_schematic.pdf

Or

http://www.ronharter.com/documents/d104_schematic.pdf

--
CL -- I doubt, therefore I might be !






"Andrew VK3BFA" wrote in message
oups.com...
OK. Have you checked with varying the settings of the 5k pot in the amp
section? - have you checked that the battery volatge is correct (ie,
measured it?). If that doesnt work, connect your CRO across the mic.
capsule and see if its the cause of the problem..... If its the amp,
shouldnt be too hard to troubleshoot - even if you shotgun replace
EVERY component on the board its a simple job. For schematic, just
Google for it - for some reason, I cant copy the link to this reply.

Andrew VK3BFA.