Ron,
Thanks for the info! A PDF of what you have by either email or
conference delivery will certainly be appreciated. I will try the
Dexcel D432. This device was used in a Bell System TD-3 solid state
upgrade amp made by California Microwave. I use to repair these amps
and have held onto an assortment of devices used in them for many years
now. Seems I recall the clipped lead on the D432 was just the reverse
that of the MGF FETs. Will certainly verify that before installing.
I must have had much more available radio money back when I bought the
PAG 432 amp since it cost that much! I bought it just after it was
introduced, probably in 1980 from Maurry Mc Mahan, K4GMJ. He was a
dealer for several VHF product lines. I see he is still listed on QRZ
and is now bumping 90. Wonder if anyone know his status? Anyway I made
about two dozen EME contacts using the PAG432 and 4 19 element RIW
antennas. Still got the antennas in storage and am considering putting
them back in use on a short tower to see how much better I can do now
with the digital modes.
See you in Orlando!
Dex
Rogers, Ron wrote:
> Dex,
> I looked through my library of files on preamps, etc. tonight
> researching my old Lunar stuff.
>
> I ran across some old PAE and PAF preamp sheets, but not the PAG.
> However, I did find a Lunar price sheet from May of 1980 with some
> info you might find interesting.
>
> The PAG 432 preamp was listed at $125 Amateur Net in 1980.
>
> What I also found on the sheet were the normal replacement parts and
> pieces. Listed with the bipolars, J-FETs, and dual gate MOSFETs, there
> were 2 UHF GaAs FETs listed to chose from.
>
> The MGF1400, and the D432 Dexcel device.
>
> So, my guess is that these were the devices used in the PAG-144, 220,
> and 432 line of preamps.
>
> If you like, I can make a PDF of this sheet and e-mail it to
> you..........or bring to the conference this weekend.
>
> Ron
> WW8RR
>
> Four Landers Contest Group
> ------------------------------------------------------------------------
> *From:* vhfcontesting-bounces@contesting.com on behalf of Dexter McIntyre
> W4DEX
> *Sent:* Sun 4/20/2008 8:43 PM
> *To:* VHF Contesting
> *Subject:* [VHFcontesting] Lunar PAG 432 Preamp device
>
>
>
> After over 25 years of use with no sequencer my Lunar PAG 432 preamp
> died. I'm fairly sure a DC input spike killed it even though I have the
> standard diode and capacitor spike circuit across the input. I had just
> moved the 12 volt input to a difference power source which also supplies
> power to a pair of old Dow Key relays.
>
> So I am in need of the original device number used in this preamp. I
> could not find the documentation that came with the preamp and A Google
> search didn't find the info.
>
> I have a quanity of old but never used Dexcel FETs designated as D432.
> I seem to recall building a 2 meter preamp using this device in a
> circuit designed for a MGF1202 and it worked well. I believe it got
> sidetracked to a repeater project years ago. Anyone know the specs on
> this device? I'm tempted to try one in the PAG432. The numbers match :)
>
> W4DEX
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>
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