Information on the HO-13 and SB-620 panadapters

[Charles W. Morehouse]

Hi Kees,
The 40-588 coil is the low frequency IF coil. 455kc and 1600 to 1681 kc. The
40-590 is a 350kc trap used only for 455kc. So yours is wired for IF of
455kc. Could use the 40-590 if you don't.
For the SB-620 the configuration is for 3395 kc. The 52-101 is hard to find.
Would appreciate the winding info for future use. 73's.
Wayne;
W4GBW

Kees & Sandy wrote:

> Good morning Heathkit panadapterers,
>
> First a question: I have a HO-13 with a 40-590 and 40-588 coil
> ....what frequency IF is the 40-588 ?
>
> One the SB-620 you use a 40-590, a 40-776 osc, and a 52-101
> coupling transformer. From what I've seen on the reflector, the
> 52-101 with the two toroids is the difficult one to obtain. Anyone
> interested in all the information: toroid dimensions, turns of wire,
> wire size, spacing, inductance, etc ..... so you can make your own.
>
> 73s  Kees K5BCQ
>
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