[NJARC] Re: 7 Pin Sockets

[JOE CRO]

Ray,
      Only real men use grid, grid bias,supressor grid,cathode, and series 
modulation! The novelty lies in getting the most efficency without the 
additional expense of a class B modulation transformer. If all is resistance 
coupled, the audio quality can be quite good, since you don't have any 
transformers to contend with. If carefully executed, it's possible to attain 
40-45 percent efficency using some of the above modulation techniques, a bit 
less with others. The only real trick is to load your final tube heavy to 
get some steam out of it, with the above techniques.

Regarding the "Lunch Box Rig", are you referring to the little Heathkits 
aka: "Benton Harbor Lunchbox" style rig? They're a hoot, and sport a super 
regenerative receiver to boot. You transmit on your crystal controlled 
frequency and tune the receiver up and down the band until you get a reply 
(if you're lucky) or a complaint (more common)- hi! At least with the 
complaint you'll know you're getting out!

I wonder if Al had something else in mind with a "lunchbox" type rig?

Will Al be going directly into the first grid of a #53 dual triode with a 
single button carbonium microphonium for his speech amp/modulator? Or, as 
John Rucolo stated, making the 53 do double duty as a reflex receiver?

This is all AM technology at it's pinnacle!

Supressor Grid or Cathode, Mod-U-Later,
                                                                 Joe Cro 
N3IBX
----- Original Message ----- 
From: "Ray Chase" <enrpnr at erols.com>
To: "NJARC" <njarc at mailman.qth.net>
Sent: Wednesday, July 25, 2007 9:16 AM
Subject: [NJARC] Re: 7 Pin Sockets


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I thought suppressor grid modulation was for wimps!  Or cheapy way to get 
poor modulation with few tubes and/or components.  What is this a lunch box 
rig?
Ray
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