[Central-Electronics] 10A

k6jek k6jek at comcast.net
Wed Oct 19 23:23:35 EDT 2011


Bob,

That Drake 1A is really of the wrong era for the CE gear.  I think you should sell it to me or better yet, you could just give it to me.

Happy to help.

Jon

On Oct 19, 2011, at 6:58 PM, Robert Nickels wrote:

> On 10/19/2011 6:36 AM, Jim Candela wrote:
>>    I think you answered your question, and you might have a 'dud' crystal. Also look at my post about a CB channel 4 crystal (27.005 3rd overtone) to replace the CE 9000Khz xtal.
> Thanks Jim, and shame on me for not remembering that thread.   On Monday 
> night I had full (5-6 watts) output using the original JK crystal, but 
> then yesterday the output was low, which put me onto the notion of a 
> low-output crystal, so I tried the one from my W2EWL rig, which produced 
> full output.   Now today output is back up, and using my capacitive 
> coupler I measure the same 9 mhz level from either crystal.  No amount 
> of wiggling, tapping, or cool mist seems to change it, so I figure as 
> long as I only use it on odd-numbered days I should be OK!
> 
> Comparing the 10A with the 10B was a good idea, as there aren't many 
> changes but going to the pentode oscillator was one of them, so that 
> would indicate this was a trouble spot.  Although the same triode 
> circuit was used (copied?) in the W2EWL and a couple of other early SSB 
> designs.
> 
> I'm going to watch it for a few days to see if it remains stable, then 
> it's heading to join up with the 600L and Drake 1A, which ought to make 
> a pretty cool station.  I did my usual AM mode audio test today on a 
> dummy load by playing music thru it, and it sure makes nice-sounding AM too.
> 
> 73, Bob W9RAN
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