What diodes do they use for that switching?
----- Original Message -----
From: "Rick Williams" <rick.williams@telus.net>
To: "TenTec List (E-mail)" <TenTec@contesting.com>
Sent: Saturday, July 26, 2003 16:01
Subject: [TenTec] Update - Argo V low output
> Well this time I think I have found the problem! After measuring the
> voltage at a reasonably accessible area of the transmitter switching
circuit
> it looked to me like the 80 meter switch was always on. The readings on
the
> various coils were correct when the rig was on 80 metres but screwy on the
> other bands. (If anyone wants the details please feel free to contact me
> directly.)
>
> I discussed my analysis with Paul Clinton (WD4EBR, Service Manager) and
> others at Ten-Tec and they agreed that the 80 metre circuitry was likely
the
> problem. A shorted switching diode or a shorted transistor the culprit.
> They hope to get a "Care Package" with the appropriate parts into the mail
> early next week. I will now begin the dismantling process.
>
> But before I put this item to rest I have some comments to add:
>
> 1) Thanks to all on the reflector for your assistance and insight.
> 2) Thanks to Ten-Tec for the prompt response to my problem.
> 3) A 2nd thanks to Ten-Tec for a great manual (explaining all the
> circuitry in plain language) and complete schematics.
> 4) Finally, I've learned a lot and that's always fun!
>
> Of interest to readers with other rigs were Paul's final words " ... don't
> forget that your efforts to repair the rig will NOT effect your warranty!"
>
> (In a few days I'll be posting pictures of the Argo V surgery on my
website
> for those that may be interested.)
>
> 73,
>
> Rick
> VE7ASR
>
> Web site: http://www3.telus.net/ve7asr
>
>
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
|