[Johnson] Adventurer Question

[manualman at juno.com]

Did you check the drive to the final? Tubes OK but did you check the pin
voltages? 60+ aging parts may have trouble working at full stream at
higher frequencies. Trouble shooting is required. 

Pete, wa2cwa


On Sun, 8 Dec 2024 00:54:20 +0000 (UTC) Bruce Hudler WK3A via Johnson
<johnson at mailman.qth.net> writes:
> Hi all,I've been working on two of these lately. One was working 
> pretty well right from the Hamfest boneyard, the other is missing 
> some parts. After resurrecting these little TX doing the usual part 
> replacing, they both have made some QSO's on 80m and 40m with about 
> 30 watts or so. Fun... the reverse beacon spots me in EU on 40m !The 
> question is as I move up in frequency, to output drops off 
> significantly to the point that I am wondering if this is normal. 
> 20m drops off to about 20 watts, then down to barely anything out on 
> 10m.Using crystal control, 7 mhz  x2 x3 x4 for the upper bands. 
> Tubes swapped and also tube tester says OK. Were they all like this 
> or something needing further troubleshooting?