[TenTec] mic

[Dr. Gerald N. Johnson]

On Mon, 2007-01-22 at 00:00 -0500, John wrote:
> I am looking at a astatic d 104 silver eagle for my Orion II .  Has anyone used this mic with this radio ?  Is this a good mic for this radio ?  thanks John  kb2huk

The D-104 was made for AM with enhanced high frequencies back in the
days when IF transformer made a receiver pass band that gently rolled
off those highs. And the original crystal D-104 was made for very high
impedance loads half to 1 megohm. I doubt the Orion II has nearly that
high an input impedance. The dynamic D-104 may work with lower
impedance. And amplified D-104 would work at the lower impedance but
will have way too much audio for the radio.
-- 
73, Jerry, K0CQ,
All content copyright Dr. Gerald N. Johnson, electrical engineer