[ARC5] Using WSJT-X with R-23 or BC-453B

[J Mcvey]

I'm running it on a 24V DC supply and dynamotor..However , it's NOT regulated ( it's n old PBX supply.)
Since these are heaters with cathodes, why is it so sensitive?The BFO osc is a triode (12SR7), so no screen.Of coarse,  the 12K8 is another story. I ran both these radios on a HP 8935 for about an hour and it did seem stable AM tuning wise. I measured the P-P output on a scope to see if there was any change. however I could hear changes while using the BFO. maybe my methods were ineffective...
What do you use as a regulator? Zener? cold cathode type?
 

    On Thursday, November 2, 2017, 12:16:07 PM EDT, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:  
 
 On 2 Nov 2017 at 13:57, J Mcvey via ARC5 wrote:

> I have an old military signal generator that once warmed up, is quite stable, so 
> stability can be achieved.
> I wish I knew how to do it with the ARC BFOs!
> Any suggestions?

The BFO is not the single most important cause of drift.

For one thing, you should use regulated DC for the filaments. At least one other user of the 
ARC-5 gear on the MF band found that doing so enhanced stability very noticeably.

And Dennis' suggestions should be followed also.

Ken W7EKB

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