[Johnson] Ranger I problem

[Jim Brannigan]

Tnx, will check, hope it is not the modulation Xfmr.
Traded a "500" power supply/mod deck for this Ranger.....

Jim

> Jim,
>
> Take a look in the manual and see if the dc resistance is listed for the
> modulation transformer. On the primary side each side to center should be
> the same, hope the manual gives values for both primary and secondary.
>
> I had talkback problems in a Johnson "500", Peter Dahl to the rescue. Had 
> to
> buy a new mod tranny, the old one didn't have the same resistance on the
> primary (each side to center) and the secondary was out of spec (internal
> short).
>
> 73's
> wd8kdg
> Craig
>
> -----Original Message-----
> From: johnson-bounces at mailman.qth.net
> [mailto:johnson-bounces at mailman.qth.net]On Behalf Of Jim Brannigan
> Sent: Monday, August 21, 2006 3:00 PM
> To: johnson at mailman.qth.net
> Subject: [Johnson] Ranger I problem
>
>
> My Ranger was completely refurbed and has been working properly.
>
> I put it on the bench to reset the bias and keyer settings, while it was 
> on
> the bench I finished the PTT wiring (ala Phil Salas and WA1HLR).
>
>
> While testing it, I noticed that one 6L6 metal modulator tube was running
> considerably hotter than the other (laser thermometer)  Substituting glass
> 6L6's showed a slight glow on the plates of the tube in the same position.
>
> Then, in AM,  the Ranger started to "talk" to me and I can't quite isolate
> the source.
>
> Resistance and voltage checks are OK.  Before I start to take it all 
> apart,
> any ideas??????
>
> Tnx in advance,
>
> Jim
>
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