[VHFcontesting] Lunar PAG 432 Preamp device

[Dexter McIntyre W4DEX]

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 at 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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