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Old August 15th 07, 02:16 AM posted to rec.radio.amateur.homebrew
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Default TS-530s Finals neutralization

Hey Guys,
Thanks for all the suggestions.
Well, the SG switch is in off position. Just like the manual says, I'm
drawing 60ma when the meter is on the LP position. But I still can't get a
drive, plate, or load reading on the meter when I ry to tune it up.
One thing I didnt consider is the driver tube?? I thought that was for
receiving only! (LOL) I think when I get this figured out I will appreciate
tube technology alittle more.
I cant waite to check out the TX-XXX groups.
Again, Thanks


"KB3IBT Dan K" wrote in message
news:6vNvi.1387$hK5.1064@trndny02...
Hello All,
I was told by a ham during a QSO that if I buy a matched pair of 6146b's,
I would not need to neutralize them?? Is that true?

Thanks KB3IBT



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Old August 15th 07, 02:20 AM posted to rec.radio.amateur.homebrew
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Default TS-530s Finals neutralization

Sorry, I meant the SG switch is ON....OOOpps!


"KB3IBT Dan K" wrote in message
news:4uswi.565$eL.363@trndny07...
Hey Guys,
Thanks for all the suggestions.
Well, the SG switch is in off position. Just like the manual says, I'm
drawing 60ma when the meter is on the LP position. But I still can't get a
drive, plate, or load reading on the meter when I ry to tune it up.
One thing I didnt consider is the driver tube?? I thought that was for
receiving only! (LOL) I think when I get this figured out I will
appreciate tube technology alittle more.
I cant waite to check out the TX-XXX groups.
Again, Thanks


"KB3IBT Dan K" wrote in message
news:6vNvi.1387$hK5.1064@trndny02...
Hello All,
I was told by a ham during a QSO that if I buy a matched pair of 6146b's,
I would not need to neutralize them?? Is that true?

Thanks KB3IBT





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Old August 15th 07, 02:34 AM posted to rec.radio.amateur.homebrew
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First recorded activity by RadioBanter: Jul 2006
Posts: 189
Default TS-530s Finals neutralization


"KB3IBT Dan K" wrote in message
news:Zxswi.425$Be.384@trndny04...
Sorry, I meant the SG switch is ON....OOOpps!


If you have the quiescent 60 mA idling current, it has to be something
else besides the finals. There's no drive, you'd see the plate current
go up when peaking the preselector.
A dirty switch contact, etc. Something simple I'd suspect. I doubt the
driver tube went bad sitting... Also, it is probably more "touchy"
to replace than the finals; I've seen big differences between American
and imported 12BY7 tubes! (I assume that is what they use, IIRC.)

Pete


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Old August 15th 07, 03:02 PM posted to rec.radio.amateur.homebrew
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Default TS-530s Finals neutralization

On Aug 15, 11:34 am, "Uncle Peter" wrote:
"KB3IBT Dan K" wrote in messagenews:Zxswi.425$Be.384@trndny04... Sorry, I meant the SG switch is ON....OOOpps!




Have you tried tuning up the transmitter as per the instructions in
the owners manual? - first and most obvious thing to do. THEN perhaps
a estimate of fault finding procedure can be worked out......

Until then, guesswork.

Also, the owners manual has a nice section on theory theory of
operation of your radio - it might be helpful if you read it and thus
have a common ground for your queries to the group.

Andrew VK3BFA.


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