[Milsurplus] MN-20E Loop questions

[J. Forster]

Hue Miller wrote:

> The MN-20 loop: that must be a low impedance winding, right? which couples
> via another low Z winding to the tuned RF circuit, right? My question is:
> what do you think the "top end" as far as upper frequency limit would be,
> coupling the loop winding into the low-Z input of an aircraft receiver?
> Possibly limited by selfresonsance of the loop's winding? Ever tried this
> for, say, HF dfing?

The MN-26 manual referenced earlier indicated the maximum compass frequency is 1500
kcps in any variant.

BTW, the loop to MN-26 cable is special and composed of loose wires in flex
conduit. The capacitance is likely well below 30 pf/ft. The loop cable length is 72
to 168 inches.

-John

B