[Collins] Several technical questions

[Jim Brannigan]

Cal,
The ARRL has CD-ROM sets of QST for the 40's, 50's, and 60's. There are
hundreds of construction articles and a wealth of theory and construction
tips.  Everything from 1W to 1KW plate modulated AM. Also look on ebay for a
50's or 60's Handbook.
I'm sure you will find something close to your desires.

Jim

> All:
>
> Still in the "design phase" of a 2-4 tube (not including rectifier) AM/CW
transmitter. I just need a few questions answered:
>
> 1) Choke-cap or cap only filtering for the power supply. Which is better?
I do have a 10 Hy 250 mA choke available but I may end up using it on my
next question.
>
> 2) Heising modulation. May have to go the 6L6 route: 6L6 modulated by a
6L6. Of course, that 10 Hy choke may do the duty of the modulator. Any
problems with that?
>
> 3) Should I retain the choke for filteration purposes, will there be a
problem putting the choke at the C.T. of the power xfmr's plate circuit?
I've seen it done with the EFJ Courier. I would like, quite frankly, to get
away from putting the choke in the B+ area if at all possible.
>
> 4) Where can I get lighted meters? Rare as hen's teeth. Ideally, I'd like
to get an amber colored unit to display my current/etc.
>
> Other than that, that's it! Thanks and let me know your thoughts.
>
>
>
> Cal, n6KYR.