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Search found 25 matches

by FCM
Fri Aug 29, 2014 12:55 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: cdm1550 question about receive
Replies: 1
Views: 663

cdm1550 question about receive

I am setting up a cdm1550 for rx on my public service frequencies and also ham. Here is my question.. does the bandwith setting matter if the frequency is for rx only? I was tokd to leave it to wideband for better audio.. is this true? Lastly, emphasis selection I have disabled and also audio filter...
by FCM
Sat Aug 09, 2014 1:22 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: gr1225 issue that has me puzzled...
Replies: 3
Views: 962

gr1225 issue that has me puzzled...

Purchased a uhf 45 watt gr1225 repeater online. Programmed to my frequencies and cw id etc. Problem is that it is only outputting about 3 watts. It is selected as high power in the mode screen. Ok, so also I changed the hangtime to three seconds and it appears the hang time isnt more than about 1 se...
by FCM
Mon Jul 14, 2014 6:09 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: old motorola ap50 question
Replies: 6
Views: 1530

old motorola ap50 question

I have an old motorola ap50 portable. Its the vhf model. Is this capable of being modded to xmit outside the ham bands? I read about removing r417, but I dont see it. Thanks
by FCM
Wed Jul 09, 2014 3:29 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Notch duplexer question
Replies: 1
Views: 463

Notch duplexer question

Hi all!! Question concerning a notch duplexer installed in a gr1225 repeater. The duplexer is tuned to 462.675/467.675 MHz. We need to change our frequencies to either 462.700/467.700 or 462.650/467.650 MHz . Can we do this without the need to have the duplexer retuned? I'm not sure how selective th...
by FCM
Tue Jun 03, 2014 5:09 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: repeater amplifier repair question
Replies: 2
Views: 450

repeater amplifier repair question

I have a milcom amp vhf 152-162 amp which we are currently using in the ham band. The amp specs 10 in and 120 watts out , howevet we are only getting about 60 watts out. I am looking for someone who can repair the amplifier. It appears milcom went bankrupt years ago. Thanks for the info!
by FCM
Mon Apr 28, 2014 11:43 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: cdm1550 ls uhf not transmitting a pl
Replies: 6
Views: 849

Re: cdm1550 ls uhf not transmitting a pl

All radios are programmed for wide. I returned the radio for an exchange. Ill let you know the outcome. Thanks for all the advice.
by FCM
Sun Apr 27, 2014 5:06 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: cdm1550 ls uhf not transmitting a pl
Replies: 6
Views: 849

Re: cdm1550 ls uhf not transmitting a pl

I tried the settings and still no luck.. maybe a hardware issue? Any other ideas. Thanks
by FCM
Sun Apr 27, 2014 4:31 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: cdm1550 ls uhf not transmitting a pl
Replies: 6
Views: 849

Re: cdm1550 ls uhf not transmitting a pl

Thanks..I thought this only affected the receive and not the transmit. Ill try a few options
by FCM
Sat Apr 26, 2014 3:16 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: cdm1550 ls uhf not transmitting a pl
Replies: 6
Views: 849

cdm1550 ls uhf not transmitting a pl

I just programmed a cdm1550 ls uhf radio for use with my system. It is not transmitting a pl tone to open my other radios squelch. I double checked that I have tpl and the tone enabled in the cps for both tx and rx fields. It receives incoming signals with pl fine...it is transmitting necause with t...
by FCM
Sun Mar 16, 2014 5:35 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: repeater coax cable recommendation
Replies: 17
Views: 1463

Re: repeater coax cable recommendation

Thanks everyone for your input. Im going to go with the lmr 600. The cost is less than half of the heliax.
Thanks again to the forum !

Frank
by FCM
Sat Mar 15, 2014 11:30 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: repeater coax cable recommendation
Replies: 17
Views: 1463

repeater coax cable recommendation

Installing a gmrs repeater. cable run is 35 ft . Output is 35 watts..what should I use for cable? Can I use cinta 600?

Thanks
by FCM
Thu Mar 13, 2014 12:04 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: uhf maxtrac receive audio distortion
Replies: 3
Views: 575

uhf maxtrac receive audio distortion

I am having an issue with distorted receive audio on my uhf maxtrac. Transmit audio is perfect. How can I correct this? Thanks greatly

Frank
by FCM
Sun Jan 12, 2014 11:29 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Re: Motorola Desk trac receiver issue

Thanks for all the help. We haven't noticed any issues for the past few days. Seems like it went away when the temperatures went above 0. Anyway, I went up today and upped the tx output to about 10 or 11 watts. The rated output is 25. I can't run anymore than 10 into the amplifier. I checked the swr...
by FCM
Sat Jan 11, 2014 4:32 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Re: Motorola Desk trac receiver issue

The radio output was turned to 6 watts out to increase the duty cycle as repeater builder recommended. The amp is a commercial amp that will produce 100 watts out with 10 in. I am taking the desktrac to a radio shop to have it checked regardless. How does decreasing the output power affect the recei...
by FCM
Fri Jan 10, 2014 12:55 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Re: Motorola Desk trac receiver issue

Located in western Md. I forgot to mention the tx was reduced to 6 watts to drive an external amp. 45 watts out of the duplexer to the antenna
by FCM
Thu Jan 09, 2014 11:20 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Re: Motorola Desk trac receiver issue

Ok, thanks. The duplexer is a band pass/ band reject telwave trpd 1556 6 can. Good advice for sure. Im looking for a radio shop to take it to as we speak. Ill het back to you with the results..thanks again!
Frank
by FCM
Thu Jan 09, 2014 6:39 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Re: Motorola Desk trac receiver issue

Problem just started to occur more often. It first showed itseld a month ago and seemed to go away but no. We are using a duplexer, the antenna is new running about 45 watts output. All of the feedline is heliax with n connectors. Even the jumpers are all heliax. The antenna is a diamond f23h 2 mete...
by FCM
Thu Jan 09, 2014 5:54 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Re: Motorola Desk trac receiver issue

Thanks for the help. Im looking for a decent radio shop I can send it to. It is a maxtrac basically. it uses a receiver and a transmitter seperate. A service monitor would be nice to have for sure. Thanks for the advice! It wouldn't hurt to have the whole thing checked anyway.

Frank
by FCM
Wed Jan 08, 2014 6:05 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: DAYTON 2014! Who's in? The official 2014 thread
Replies: 17
Views: 4776

Re: DAYTON 2014! Who's in? The official 2014 thread

Ive never been! Sounds like I should make a trip..I can see a lot of money getting spent
by FCM
Wed Jan 08, 2014 5:59 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Desk trac receiver issue
Replies: 16
Views: 2351

Motorola Desk trac receiver issue

I am having an problem with my Desktrac repeater. A transmitting station will have a full quieting signal and after about 30 seconds the signal will become overridden with static. The static becomes so bad, often dropping out the transmitting station completely. We had a pre amp installed and have r...
by FCM
Thu Oct 31, 2013 4:07 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: motorola desktrac audio interfacing to rc 96 controller
Replies: 0
Views: 671

motorola desktrac audio interfacing to rc 96 controller

When connecting rx and tx audio should we be using flat audio or the pre emphasis and de emphasis? Im getting mixed answers from other sites. Motorola desktrac repeater. Currently it is connected as pre and de emphasis and we are having some issues with dtmf decoding. Thanks!
by FCM
Sun Oct 20, 2013 9:00 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Desk Trac rx sensitivity issue HELP!
Replies: 12
Views: 1215

Re: Desk Trac rx sensitivity issue HELP!

Thanks for the info.we got a telewave tprd-1556. Minimum split is 400 khz. 350 max power 100 db isolation
by FCM
Sat Oct 19, 2013 9:47 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Desk Trac rx sensitivity issue HELP!
Replies: 12
Views: 1215

Re: Desk Trac rx sensitivity issue HELP!

Thanks for the reply guys. No Im not using a coax t! LOL! Im am purchasing a 6 cavity duplexer this week and will setup as a single antenna operation. I should have done a better job of describing the connections. Here is what I have to clarify..uhf repeater has a comet duplexer in the line, it is a...
by FCM
Fri Oct 18, 2013 5:38 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Desk Trac rx sensitivity issue HELP!
Replies: 12
Views: 1215

Re: Desk Trac rx sensitivity issue HELP!

Thanks for the reply guys. We are using two antenna seperated about 8 ft or so apart. Frequency is 146.700 tx - offset. We are using rg58 coax jumper from the tx side to a 100 watt amp and running hardline from the amp to the lightning arrestor and out to the antenna. On the rx side we are sharing t...
by FCM
Fri Oct 18, 2013 12:29 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Desk Trac rx sensitivity issue HELP!
Replies: 12
Views: 1215

Desk Trac rx sensitivity issue HELP!

Hi, I have a desktrac that is currently setup on vhf ham frequencies. The rx sensitivity is terrible! I tried adjusting the squelch to see if this changed anything and it did not. If you are within a 1'2 mi of the repeater its fine, but any farther , even with 75 watts from my mobile the received si...

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