On Wednesday, June 26, 2019 at 3:42:36 PM UTC-7, Don Brown wrote:
On Wednesday, June 26, 2019 at 1:53:53 PM UTC-7, Don Brown wrote:
On Wednesday, June 26, 2019 at 1:51:20 PM UTC-7, Fox's Mercantile wrote:
On 6/26/19 2:59 PM, Jeff Urban wrote:
Bama probably has it but I can't confirm it right now

They don't.
http://bama.edebris.com/manuals/hickok/

--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

I looked everywhere for it and ended up buying the hard copy. So I need to scan it and link it.

Here is a photo gallery that I created with the schematic and circuit description: http://www.edfredcorp.com/Hickok/httphotos/index.html

And here is a link for a high resolution schematic: http://www.edfredcorp.com/Hickok/htt...0Schematic.jpg

By temporarily reducing the resistance of R22 & R23 in the 15+ & 15- I was able to bring up voltages to exactly 15v.That does heat up the zeners, which I upgraded from 1/2W to 15v 1W. No change on stability issue.