[Johnson] Johnson 500 Spot Level

[hamfish at comcast.net]

Hello Dave,

Looking at page 46 in the owner's manual downloaded from BAMA, do you arrive
at the typical dial readings? Particular the drive and PA Grid values are
important. The item noticed with my Junkston "500", is the difference
between the drive setting using a crystal vs VFO. But once the PA Grid is at
10 mils, the spot signal heard is the same.

Could the sensitivity of the receiver be lacking? Without reviewing the
schematic, could the 5763 be getting weak? 

Regards,
Craig

-----Original Message-----
From: johnson-bounces at mailman.qth.net <johnson-bounces at mailman.qth.net> On
Behalf Of David Harmon
Sent: Friday, August 2, 2019 11:29 AM
To: johnson at mailman.qth.net
Subject: [Johnson] Johnson 500 Spot Level
Importance: High

Both my J500 have very low spot levels which make it difficult to zero the
VFO to the receiver.
I have a few ideas for a mod to increase this level but I thought I should
check to see if anyone else has had this problem and what was done to
increase the spot level.
Both transmitters are working to spec with no problems.
Anyone have any info?

Thanks...

73

David Harmon
K6XYZ
Sperry, OK


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