OK guys.... I need the wisdom of the ages... or is that aged? I dunno.
Over twenty years in the making... well, that's when I got the bottle.
Over the years I've collected the guts and small parts. It's time to put it
all together.
Basically adapting the parts that I have to the AA6GK design found on the
Arkansas ARES/RACES site.
_http://www.arkansas-aresraces.org/Equipment/Amplifiers/themanual.htm_
(http://www.arkansas-aresraces.org/Equipment/Amplifiers/themanual.htm)
A couple of questions:
1. Anybody have the specs on a PI-DUX 195-2 coil? Diameter, turns,
length, AWG, etc?
2. The big question... his input net starts fine at 160m... 1820 puffs >>
10-15uH adjustable >> 1360 puffs on the output. Looks good as it breaks
down to 1800p + 4.4uH = Z50 in : 9.7uH + 1360p = Z110 out.
However, his 80m selection is more like 50 in and 60 out; 40m is 30 in and
50 out; 20m is 18 in and 30 out; according to his capacitor selection and
the corresponding reactances and impedances
I think he was winding coils to use whatever micas he had in stock. He
has been unreachable via phone calls and e-mails to his mobile electronics
business. Should I use his specs, or would I be better to scale the values
more towards 50 in and 110 out?
3. Lastly, I have a 2H 1.6A monster choke for the HV PS. The tranny is
3600 rms @ 1 amp. About 5kV into the filter. Using 4 tubbies at 8uF/4kV in
series / parallel for 8uF at 8kV with 2 100k/225W bleeders; the big choke;
and then 14 390uF/450v lytics bridged with 14 50k 10Ws on the output.
Ur thots on a resonating cap for the choke? The first bleeder current is
about 25mA (about 125W)... might add an extra pair of 100k/100W to drop the
heat; yea or nea?
And, yes, I put new 150# casters on the rack.... the HV PS runs about 150
pounds. ;-))
Thanx for the help.
Unca Billy
N3TR
Wm. H. Taylor
General Contracting and Design
2249 Hickory Hill Rd
Oxford, PA 19363
610-932-3762 h
484-643-3220 c
n3tr@arrl.net
Historical Restoration; Custom Stonework; Fireplaces
Star Bolts; Structural repairs
HIC Lic. # PA005831
Nationwide 54-0-2659338
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