[Motorola] HT1250 VHF Antennas

[David Jones]

Dennis:

Motorola antennas are color coded.  You can determine the frequency range of 
the antenna by its color code.  If you remove the antenna from the radio and 
look at the end of the threaded portion on the antenna you will see spot of 
paint.  If the spot is red the antenna range is 136 - 155 MHZ, brown is 
150 - 161 MHz,  black is 155 - 174 MHz..  So you want an antenna color coded 
red.  The part number is 8504762J01.  There is a wideband antenna, 
NAD6502AR, that covers 146 - 174 MHz that is also coded black.  However for 
your purpose I would suggest that you use the red antenna.  All of the 
antennas are relatively inexpensive, in the $10 -$13 so you may want to try 
different antennas.

I hope this helps.

David

----- Original Message ----- 
From: "Dennis Wade" <sacramento.cyclist at gmail.com>
To: "Discussion of equipment manufactured by Motorola" 
<motorola at mailman.qth.net>; <motorola-Radios at yahoogroups.com>
Sent: Thursday, October 06, 2011 1:31 AM
Subject: [Motorola] HT1250 VHF Antennas


Good evening all,

          I'm the recently new owner of a refurbished HT1250 VHF.
Having used a 99 ch MT1000 for a number of years, I loved the
ruggedness of the MT, but really wanted a more modern display, and a
programming system that didn't require me to dumpster dive for a
suitable computer... :).

          I used the HT in an annual public service event during which
I am in places where hitting certain repeaters is sketchy...sometimes
I can, sometimes I can't.  I know about how the MT will perform...this
was my first chance to use the HT.  I noticed a subtle difference in
that the HT wasn't quite able to open machines that I probably could
have the year before with the MT.  However, circumstances prohibited
me from carrying both radios. (I did not notice a similar difference
on the receive side).

          One thing I discovered is that in this
document,(http://www.wiscomm.com/MotoCatalog/HT750-HT1250-HT1550.pdf)
on page 23, it describes various VHF antennas available for the
HT1250.  Only one covers the ham band, i.e. part number 8504762J01.

           I looked to see what I was given with refurbished radio..I
could not find a part number..only "Motorola VHF" embossed in the
rubber cover.

           There really is no clear answer because multiple things may
have changed over the course of the year.  I do have two questions:

                 1.  Could the wrong antenna contribute to the noticed
difference in performance?

                 2.  Where is (or is it important) to find the part
number on the antenna I have?

             and, (I know, this is 3),

                 3.  Are there 3rd party antennas that might perform better?

        Thanks for your help,

                    Dennis



-- 
"If they trust you, it is an extraordinary privilege, and you simply
can't abuse it."
- A. Alan Post 1914-2011. California Legislative Analyst 1949-1977.

-------------------------
Dennis L. Wade
KG6ZI
Carmichael, CA
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