I have a MT 1000 handheld that I need to use the external antenna feature. Do I need to connect pin 13(sense) to pin 12(RF ground)as shown in the link, to use the external antenna and does it disable the standard antenna? What is the sense connector for? Can I use OPT B+ for external power, and what voltage.
http://www.batlabs.com/images/ht600.gif
<font size=-1>[ This Message was edited by: EC-7 on 2002-01-01 05:28 ]</font>
MT 1000 external ant.
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raymond345
- Posts: 268
- Joined: Sat Sep 22, 2001 4:00 pm
Hi there from Canada
The gov't here uses the MT1000
with an adapter on the top of the radio
that lets u use an external ant.
It is used in the bush most of the time and works great.
Most radios have no power chargers so
they have been using 12 volt power batteries
on these 10 volt radios for 11 years with no trouble. The batteries are a one time deal.
Raymond
The gov't here uses the MT1000
with an adapter on the top of the radio
that lets u use an external ant.
It is used in the bush most of the time and works great.
Most radios have no power chargers so
they have been using 12 volt power batteries
on these 10 volt radios for 11 years with no trouble. The batteries are a one time deal.
Raymond
The MT1000/HT600 series have a rather safisticated antenna switch in them. The RF adapter grounds pin 13 and that routes all the RF in/out the two pins, 10 & 12 is ground.
The "options jack" also switches audio to and from the spkr/mic or other external audio product. The only adapter to do both is the factory programming/test adapter.
Always keep the dust cap on the contacts when not using the adapter(s), a ESD zap on one of the pins KILLS the controller..
As far as feeding power into the radio, I have seen some damaged radios due to this.I DO NOT recomend this. Take an old batterys bottom off and use the housing and contacts. I used to make "battery eliminaters" that have a voltage regulator and a reverse polarity diode in them.
The "options jack" also switches audio to and from the spkr/mic or other external audio product. The only adapter to do both is the factory programming/test adapter.
Always keep the dust cap on the contacts when not using the adapter(s), a ESD zap on one of the pins KILLS the controller..
As far as feeding power into the radio, I have seen some damaged radios due to this.I DO NOT recomend this. Take an old batterys bottom off and use the housing and contacts. I used to make "battery eliminaters" that have a voltage regulator and a reverse polarity diode in them.
Hi:
<b><h3>PLAY IT SAFE !!</h3>
Use a NTN5368A Antenna Adaptor.
Since Motorola does not offer service on MT1000's anylonger, if you blow up the transmitter, it could be a expensive repair.
Most of the time when I get them in for repair, it still runs 125.00 to fix them. Still less than 1/2 of what Motorola used
to charge.
I have a few if you get desperate, email
me direct if you are interested.
Monty
<font size=-1>[ This Message was edited by: [email protected] on 2002-01-01 20:05 ]</font>
<b><h3>PLAY IT SAFE !!</h3>
Use a NTN5368A Antenna Adaptor.
Since Motorola does not offer service on MT1000's anylonger, if you blow up the transmitter, it could be a expensive repair.
Most of the time when I get them in for repair, it still runs 125.00 to fix them. Still less than 1/2 of what Motorola used
to charge.
I have a few if you get desperate, email
me direct if you are interested.
Monty
<font size=-1>[ This Message was edited by: [email protected] on 2002-01-01 20:05 ]</font>
I bought the radio on Ebay for $25, so if it dies it's no big deal. I have more better radios. I am making a portable emergency crossband repeater for fire-police. I soldered the wires to the contacts since it's not an expensive radio and I don't care about looks. I will just use the dead battery pack's contacts as a power source. I couldn't get much range from the radio, and I guess it's because it was using the rubber duck inside the building and not swithing on the external antenna. Thanks for the help.