Cheyenne and Comanche questions

[Glen Zook]

Any 8 ohm speaker will work fine.  However, the
Comanche (MR-1) was designed to be used with a 3.2 ohm
speaker (commonly called "4 ohm").  You can use a
higher impedance speaker without any problems.  But,
when using a lower impedance speaker you have to be
careful in some applications.

The microphone connector on the Cheyenne (MT-1) was
used for decades by the commercial two-way radio
manufacturers like Motorola and General Electric. 
They are very common.  In fact, I should have a number
of them (used) out in my old shop left over from when
I owned the Motorola reconditioned equipment center
for the south-central United States.

The microphone needs to be a high impedance (i.e.
crystal or ceramic element) just like most "boat
anchor" transmitters use.

Glen, K9STH


--- KC2RVD <lciotti1 at TWCNY.RR.COM> wrote:

I have this pair of transmitter and receiver.  Both
appear to be in working order.  I have powered both up
using a HP-23 power supply, and I am able to receive
signals with the Comanche.  Now I would like to hook
up a speaker to the receiver, any recommendations on a
low cost speaker that works well with this??  Will
just any 8ohm speaker work? 

Also I do not have a microphone for the Cheyenne, and
the plug is HUGE compared to what I have been able to
find to try and adapt something to it.  Any
recommendations on where to get a connector, and what
type of microphone will work?









Glen, K9STH

Website:  http://k9sth.com

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