Hi Brett
I have been following your posts on the 4D32 project with some interest as I
too had the same idea. Kind of a coincidense.
A few years ago I purchased a couple of mod xfmrs from Fair when the prices
were right. The mod xfmrs were rated at 150 watts with a 2400 z , 350ma
secondary. I
Journal
www.collinsra.com
- Original Message -
From: Brett Gazdzinski [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Saturday, January 24, 2004 10:46 PM
Subject: RE: [AMRadio] 4D32 rig testing
Dave,
many people run them on low voltage, that is ok with me.
I have been running mine
, 2004 10:39 PM
Subject: RE: [AMRadio] 4D32 rig testing
Don,
I was in qso with Jay, n2wwl today, and we were talking about
the 32v3, and the voltage it runs at, Jay runs his on the low voltage
position,
about 600 volts on the plates.
I run mine on the 700 volt tap, 180 to 200 ma.
The panel
Collins runs them at over 700 volts in class C plate
modulated service (32V series).
If they don't arc over, and you don't exceed the plate dissipation,
what would be the problem?
That's a good point. I recall an article pre-WW2 in QST which described
getting high peak audio power from
these days.
Thank you
Dave, W3ST
Secretary to the Collins Radio Association
Publisher of the Collins Journal
www.collinsra.com
- Original Message -
From: Donald Chester [EMAIL PROTECTED]
To: amradio@mailman.qth.net
Sent: Saturday, January 24, 2004 3:47 PM
Subject: RE: [AMRadio] 4D32 rig testing
Don,
I was in qso with Jay, n2wwl today, and we were talking about
the 32v3, and the voltage it runs at, Jay runs his on the low voltage
position,
about 600 volts on the plates.
I run mine on the 700 volt tap, 180 to 200 ma.
The panel meter says 800 volts high voltage, but I put my
DMM on it and
, 2004 4:10 PM
To: amradio@mailman.qth.net
Subject: Re: [AMRadio] 4D32 rig testing
Please excuse my ignorance among the experts but shouldn't
one be careful
not to push the voltage rating on the secondary of the modulation
transformer when increasing the plate voltage on the RF
Subject: Re: [AMRadio] 4D32 rig testing
Brett,
The 4D32 is rated for 750 volts max plate volts for class C
telegraphy and
600 volts max for class C plate modulated AM.
Don
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In a message dated 1/23/4 9:59:58 AM, [EMAIL PROTECTED] writes:
Collins runs them at over 700 volts in class C plate
modulated service (32V series).
If they don't arc over, and you don't exceed the plate dissipation,
what would be the problem?
Brett,
I have a 32V-3. I can't find anywhere in
Hello all AMers.
I did more testing on the 4D32 rig, I made a different
pi net coil, out of 1/4 inch copper tubing, sure looks nice!
I played around with the amount of turns, fine tuning things.
I had used #10 wire on a form, which got slightly warm after
extended testing, the new copper tubing
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