[GreenKeys] (no subject)

[amourdutigre]

Hi again,

One of my goals is to set up a completely tube (hollow state) RTTY station. Got the ASR 28 and TT/L-2 (Courtesy of Jack K0TTY), and am in the process of building a W2PAT AFSK device. 

Now, I need to be aimed in the direction of a tube based loop powersupply circuit without any solid state rectifiers. I have googled extensively and have found nothing. (Presently, I am using a loop supply on loan from K0TTY, and I have just bought a loop supply from Steve Hilsz. (I do not dislike solid state, but I do want to have a completely EMP proof system, and I simply like tubes.)

Once I get these things in place the next phase is a 40 Meter, single purpose (RTTY) transmitter. I am thinking about a mono-band unit that would simply be quite simple, without any audio circuitry. I am not an RF designer, so I would need help with this from someone who is, but I was wondering if a crystal controlled unit (rock bound) could be built with enough of a fudge factor that it could be used for FSK.  It would be cool if it could have a number of crystals to switch between. What is your thoughts on this? Does anyone know if this has been done before?

Best and 73
Joe Herdler
KB0TXC
Greenkeys
TCI
/NNNN