Search found 43 matches

by JMINN
Fri Jun 27, 2014 5:04 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM 1250 won't power on
Replies: 3
Views: 2017

Re: CDM 1250 won't power on

I determined that the microprocessor died, don`t know why it just did. I have replaced them before but it is a pain. Found a replacement on Ebay for far less than depot repair, like that would be hard.
by JMINN
Fri Jun 13, 2014 7:07 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM 1250 won't power on
Replies: 3
Views: 2017

CDM 1250 won't power on

I have a CDM 1250 that won't power on. When the on/off button is first pressed the radio beeps, display stays dead and the radio continues to beep. Pin 2 of the control head connector constantly switches between 0 and 5 volts. TP 0151 is constant 5v. output of U0651 is 5v, U0641 is 9.3v and U0611 is...
by JMINN
Wed Jun 11, 2014 7:24 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Poor rec audio thru MCC5500
Replies: 7
Views: 1893

Re: CDM1250 Poor rec audio thru MCC5500

I flashed in the latest firmware and it corrected the problem.
by JMINN
Wed May 28, 2014 1:07 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: OLD MOTOROLA LIGHTBAR RELAY KIT.
Replies: 13
Views: 3761

Re: OLD MOTOROLA LIGHTBAR RELAY KIT.

Sounds like you are describing the old systems 90 switch head. Used a lot of these back in the day in cop cars using Micors.
by JMINN
Thu May 01, 2014 8:31 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: GM300-Maxtrac PA swap?
Replies: 4
Views: 1542

Re: GM300-Maxtrac PA swap?

On the UHF PA's, look at the solder around the output transistor. In particular look at the bypass caps between the base emitter/emitter collector junctions. Those PA's will get hot enough to flow the solder.
by JMINN
Fri Apr 25, 2014 5:08 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Poor rec audio thru MCC5500
Replies: 7
Views: 1893

Re: CDM1250 Poor rec audio thru MCC5500

All six of out CDM's are connected to the tone remote adapters via the the accy jack. All the cables are identical. All set ups are identical. The radios are cloned. Switching the radios around the problem stays with the radio, the cables, adapters, MCC,all work well with other CDM's. I have reprogr...
by JMINN
Thu Apr 24, 2014 10:38 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Poor rec audio thru MCC5500
Replies: 7
Views: 1893

CDM1250 Poor rec audio thru MCC5500

We have five MCC5500 dispatch consoles with CDM1250's attached with L3276 tone remote adapters. All the same band radios are programmed the same (cloned). One of the Vhf CDM's has poor quality audio to the consoles. It has static at the end of received audio and sounds overmodulated.When heard on th...
by JMINN
Thu Aug 01, 2013 5:40 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Fair price for a Micom 2TS?
Replies: 4
Views: 1768

Re: Fair price for a Micom 2TS?

The Micom 2TS can be operated headless using a laptop and proper software. If you are into construction projects, a control head can be built for under $100.00. The control cable is the same as the Motorola MCS2000, the power cable is easy to make, the connector can be bought from Mouser. Informatio...
by JMINN
Mon Jul 15, 2013 7:36 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Can't Align UHF M120's Oscillator (Warp)
Replies: 12
Views: 2366

Re: Can't Align UHF M120's Oscillator (Warp)

The shield for the 16.8 osc coil is bad about growing `whiskers` which will detune the osc. remove the shield and clean out the `whiskers`, spray the inside of the can with clear lacquer and install. The interconnect sockets were also bad about growing `whiskers`(with a magnifying glass they can be ...
by JMINN
Mon Jul 09, 2012 8:56 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: HT600 speaker mics
Replies: 4
Views: 673

Re: HT600 speaker mics

It can be done. As I recall you will need to modify the spkmic circuit board. compare the two spk mic circuits and you will see the difference.

Joe
by JMINN
Tue May 01, 2012 5:31 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Micom-2TS feedback/guidance
Replies: 33
Views: 7870

Re: Micom-2TS feedback/guidance

If it would help I have the schematics for both the Mcs control heads and the Micom 2 control head.

Joe
KC5DPV
by JMINN
Fri Apr 27, 2012 8:23 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Micom-2TS feedback/guidance
Replies: 33
Views: 7870

Re: Micom-2TS feedback/guidance

Congratulations! I have been following you posts with great interest, as I have a headless Micom 2 that I can not communicate with through the RS232 rear port.

Joe
KC5DPV
by JMINN
Tue Dec 27, 2011 7:20 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

According to the alignment software what ever you set the tx line level to it will produce at max 60% of whatever you set max deviation to. That why I suggested setting max dev to 4000 instead of 2500. 60% of 4.0kc is 2.4 kc.

Joe
by JMINN
Thu Dec 22, 2011 10:32 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

I don't so much mind the laptop. I just wish the software writers new alittle something about radio.
Joe
by JMINN
Thu Dec 22, 2011 6:16 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

Dear Santa

Please bring me a pot I can put a screwdriver on.

Joe
by JMINN
Wed Dec 21, 2011 5:38 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

Ok I think I have figured out the method to Motorola`s madness. According to the brief explaination in the wire line tx adjustment page, what ever this input level is set to will yield 60% of full modulation, therefore if the transmitter is set for 2.5kc mod level, the maxium the wire line can drive...
by JMINN
Wed Dec 21, 2011 2:22 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

Been playing around with an identical system on the bench. I have the MTR2000 configured with low priority repeater ptt to fall back to conventional repeater operation should the spectra tac comparator die. I discovered that with the same level of modulation into the MTR`s receiver that repeater tx ...
by JMINN
Wed Dec 21, 2011 8:02 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

One of the main complaints is that it is not as loud as our other channel which is a narrow band MTR200 repeater. We didn`t have the budget to replace the Micor voter receivers so I install a narrow band if crystal filter kit and readjusted the discrimator for max output with 1kc tone at 2.5 dev ful...
by JMINN
Wed Dec 21, 2011 6:06 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Re: Spectratac and narrow banding

Thanks for the responses. I personally think that the system is ok. I admit it sounds different, but so do all the systems that go from wide to narrow. Around here it only takes one person to start an avalanche of complaints. We have a saying around here "change is hard". I wanted to get i...
by JMINN
Tue Dec 20, 2011 12:23 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectratac and narrow banding
Replies: 20
Views: 2688

Spectratac and narrow banding

We have a Spectratac voting system consisting of an MTR2000 as the transmitter and one of the receivers and two Micor spectratac receivers. We recently narrowbanded the system. I used a narrowband if crystal filter kit from Comspec for the Micor receivers. I realigned the micor receivers per Comspec...
by JMINN
Tue Dec 28, 2010 12:59 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Wanted info on Mobat antenna tuner
Replies: 2
Views: 1204

Re: Wanted info on Mobat antenna tuner

Thanks for the information. Do you have a circuit for it? One of the parallel chip caps (inductors?) has a hole chipped out of it. I would also like to modify it for a seperate 12v supply.

Joe
by JMINN
Sun Dec 26, 2010 5:08 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Wanted info on Mobat antenna tuner
Replies: 2
Views: 1204

Wanted info on Mobat antenna tuner

I am looking for instructions for operating the motorola F2265A hf-ssb antenna tuner. Any help will be appreciated.
Thanks

Joe

KC5DPV
by JMINN
Thu Dec 24, 2009 11:14 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectra Tac jumper configuration
Replies: 17
Views: 1168

Re: Spectra Tac jumper configuration

My three channel Spectra tac votes seamlessly, no difference in audio levels. What officers are bitching about is the front end clipping and the clicks at the end. Not a one of them has noticed the improvement in coverage. I see that used Digitac comparators are now reasonable. Do they make that muc...
by JMINN
Mon Dec 21, 2009 8:59 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectra Tac jumper configuration
Replies: 17
Views: 1168

Re: Spectra Tac jumper configuration

Thanks for the responses. They have comfirmed what I already though. I will show your responses to the command staff so that they can tell the winny officers to live with it. The improved coverage out ways the slight inconvience.

Joe
by JMINN
Mon Dec 14, 2009 9:59 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectra Tac jumper configuration
Replies: 17
Views: 1168

Spectra Tac jumper configuration

I have a spectra Tac system on a MTR2000 with two spectra tac voting receivers and the MTR`s receiver voting up a storm. I have a question on what is the best way to configure the Command module`s vote lock options. Also instead of being praised for the improved coverage all I get from the officers ...
by JMINN
Fri Sep 18, 2009 8:42 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MICOM X
Replies: 0
Views: 413

MICOM X

I have a Micom X with a bad microprocessor. Any Ideas on a replacement?

Joe
by JMINN
Thu Jul 16, 2009 5:18 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: PSB AND SRN`S
Replies: 1
Views: 382

PSB AND SRN`S

I am looking for copys of PSB-653 and SRN-1068.

Thanks.
Joe
by JMINN
Wed Jul 15, 2009 8:43 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SPECTRA TAC ON FIBER OPTIC LINES
Replies: 12
Views: 1851

Re: SPECTRA TAC ON FIBER OPTIC LINES

What I was refering to is the QRN8498A roofing filter module. Also I am looking for a copy of Motorola PSB-653 and SRN-1068.

Joe
by JMINN
Wed Jul 15, 2009 5:42 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SPECTRA TAC ON FIBER OPTIC LINES
Replies: 12
Views: 1851

Re: SPECTRA TAC ON FIBER OPTIC LINES

Thanks for the info. The equalization module you mention, is that the same as the filter module used for local receivers? I have one for the local receiver, but never thought of using one with the fiber lines.

Joe
by JMINN
Tue Jul 14, 2009 10:51 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SPECTRA TAC ON FIBER OPTIC LINES
Replies: 12
Views: 1851

Re: SPECTRA TAC ON FIBER OPTIC LINES

So what is the answer, use rf links? Would the Raytheon SNV-12 be better able to cope?
by JMINN
Mon Jul 06, 2009 5:26 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SPECTRA TAC ON FIBER OPTIC LINES
Replies: 12
Views: 1851

Re: SPECTRA TAC ON FIBER OPTIC LINES

Thanks for the replay. I have the roofing filter, it doesn`t seem to help. My thought is that the phone company`s equipment is processing the receive audio in such a way as to interfer with the voters ability to properly determine signal to noise quality.

Joe
by JMINN
Thu Jul 02, 2009 1:35 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SPECTRA TAC ON FIBER OPTIC LINES
Replies: 12
Views: 1851

SPECTRA TAC ON FIBER OPTIC LINES

Has anyone been able to get a spectra tac voting system to vote properly using fiber cable? No mater how many times I set line levels, I can not get consistently good signal quality voting with my hand helds. It seems to perfer the receivers on fiber lines to the ones on copper even though the signa...
by JMINN
Fri Apr 24, 2009 1:10 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Cp200 channel select problem
Replies: 4
Views: 910

Re: Cp200 channel select problem

The CP200 freq switches are nortorious for going bad. Second most common problem I see to acc`y jacks broken off the circuit board.
by JMINN
Tue Jul 24, 2007 6:17 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CP200 with Error 2436
Replies: 4
Views: 762

Re: CP200 with Error 2436

I have noticed from the form that this seems to be a fairly common problem with CP200. I just received a customers CP200 with the same problem. When you try to read or write to the radio you get the 2436 error code. I am sure that this problem occured in the field and not due to bad programming. Has...
by JMINN
Tue May 29, 2007 7:23 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SPECTRATAC INPROPER VOTING
Replies: 3
Views: 748

SPECTRATAC INPROPER VOTING

I have a Spectratac voting system consisting of an MTR2000 and two Spectratac voting recievers. The comparator is located with the MTR2000 and its receiver is connected to the comparator through the QRN8498C filter. The problem I am having is that one of the remote Spectratac rec. is consistently vo...
by JMINN
Thu Mar 29, 2007 6:30 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MTR2000 POWERSUPPLY FAILURE ALARM
Replies: 2
Views: 689

MTR2000 POWERSUPPLY FAILURE ALARM

I have a 100w UHF MTR2000 repeater with ac powersupply. Periodically during self test it will give powersupply fail alarm. It will also intermittently give this alarm in diag. The power supply has never failed, and the repeater has never had a problem. I have had to turn off the over air alarm beep ...
by JMINN
Wed Feb 21, 2007 8:49 am
Forum: Knowledge Base
Topic: [ KB ] Spectra-TAC System Installation / Optimization
Replies: 2
Views: 5891

That is very good information on the Spectra Tac alignment. Thanks. I have looked through all my old SRN and PSB and couldn`t find 1068 or 653. Do you have copies you could post?

Joe
by JMINN
Sun Feb 18, 2007 6:10 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectra tac aligment
Replies: 20
Views: 2102

Thanks for the information. Any special alignment considerations for the filter card?

Joe
by JMINN
Sun Feb 18, 2007 5:18 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectra tac aligment
Replies: 20
Views: 2102

Thanks for all the input. I now have another question. I just recieved the
spectra
tac roofing filter for my co-located reciever, but Motorola did not see fit to send a installation manual with it and the Spectra Tac manual makes no mention of this filter module. How is it installed?
Thanks


Joe
by JMINN
Mon Feb 12, 2007 6:46 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Spectra tac aligment
Replies: 20
Views: 2102

Spectra tac aligment

I am in the process of setting up a uhf voting system with a MTR2000, a spectra tac comparator and Micor voting receivers. I have read through Motorolas level setting procedures and have a question about -13db and 0db level settings for status tone. The manual doesn`t give an explanation as to the a...
by JMINN
Tue Oct 17, 2006 11:17 am
Forum: Radio Programming
Topic: HT 750 codeplug
Replies: 3
Views: 1179

MotoMax300 wrote:403-470 or 450-512?

Nevermind, model number says 403-470

Whats your email?


I goofed, the mod is H25SDC9AA3AN, the 450-470 split. Email is JMINN@MAIL.PROVALUE.NET Thanks
by JMINN
Tue Oct 17, 2006 8:49 am
Forum: Radio Programming
Topic: HT 750 codeplug
Replies: 3
Views: 1179

HT 750 codeplug

I am looking for a codeplug for HT750 Mod:H25RDC9AA3AN. This is the 450-470 split. I am trying to revive a radio with a corrupt codeplug.

Thanks

Joe
by JMINN
Fri Jul 01, 2005 9:19 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: M and it's Depot at it again
Replies: 18
Views: 2558

This part is used not only on the SP50, but the P1225, CT450, and HT750, HT1250. Having been a Motorola MSS for over thirty years, I am very saddened at the direction Motorola has taken in the last several years. It was their service organization that made then head and shoulders above their competi...

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