[Heathkit] SB-620 Scalalyzer Varicap Diode, 455 IF Coil Info Needed

[Tom NØJMY]

Use the NTE614.

The 455 coil for the SB-620 has the following characteristics:

Range:  117uH (max) to 275 (min)
Preset:  123 ±5% @ 790 kHz.
"Q": minimum @ 790 kHz.: 57 measured with 2 1/4" leads to Q-meter
Min. wire size: 3/41 litz
Wire type: S. Cel. Poly.
No. of turns:  Universal 133
% of total turns from start to tap:  23%
Viewed from above (screw adj. end):
Start: lug #3 @ 6 o'clock
Tap: lug #2 @ 9 o'clock
Finish: lug #1 @ 12 o'clock
Dummy: lug: #4 @ 3 o'clock
Winding: Clockwise
Staple lugs not to protrude inside coil form
Form to withstand 1000 VAC terminals to core
Must snap into 5/16" hole in 14 ga. aluminum

Good luck and please keep the list informed of your successes.

73,
Tom NØJMY .   .

Hayseed Hamfest Co. - Multi-section Can Capacitors
for vintage Heathkit, Drake, Halli, Hammy, more...
www.hayseedhamfest.com