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Search found 342 matches

by Doug
Sat Dec 10, 2016 8:58 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: TRACK GENERATOR PROBLEM
Replies: 5
Views: 1167

Re: TRACK GENERATOR PROBLEM

The easiest thing to check right off the bat.... Is it possible the pico fuse beneath your antenna input gone open? Look at all the variables first, cables, antenna input you get the idea
by Doug
Sun Nov 20, 2016 2:31 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar RX Fail light
Replies: 4
Views: 1330

Re: Quantar RX Fail light

Read the station, go under service within the area there is an area for metering various stages. If memory serves me correct P.A. is the first screen..... Look across the top of the screen and there should be various modules you can switch to. Check receiver one. I had one failing because of low vol...
by Doug
Thu May 28, 2015 3:38 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Converting A Motorola MSF 5000 Power Amplifier
Replies: 9
Views: 1077

Re: Converting A Motorola MSF 5000 Power Amplifier

Bob, I did a setup for someone just recently with an MSF power amp. With the amplifier being non-linear it was interesting seeing the results. The setup was a standard 110 watt UHF amp. At 2.67 watts of drive it set the out put to 156 watts (no bueno) 2.53 watts drive set the output to 138 watts. Th...
by Doug
Tue Apr 21, 2015 5:45 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Converting A Motorola MSF 5000 Power Amplifier
Replies: 9
Views: 1077

Re: Converting A Motorola MSF 5000 Power Amplifier

Just an out load thought, Is using a back to back radio configuration really your best option? Two things come to mind right off the top the first thing is your going to be using a radio as a transmitter/exciter. Duty cycle is foremost, this is a crap shoot I know of people who have tried and had go...
by Doug
Mon Apr 20, 2015 5:17 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Converting A Motorola MSF 5000 Power Amplifier
Replies: 9
Views: 1077

Re: Converting A Motorola MSF 5000 Power Amplifier

The molex connector is specific to the msf. It contains forward and reversing voltages and drives the exciter accordingly. You will not need to attach it to anything. The output will be dependent on the exciter drive. Somewhere around 2-2.5 watts of drive should take it to full output power. I'm a b...
by Doug
Mon Mar 16, 2015 4:52 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: GR1225 Repeater not re-transmitting. . . .
Replies: 20
Views: 1857

Re: GR1225 Repeater not re-transmitting. . . .

An easy way to check if its a controller issue is to remove the controller cabling read and change the codeplug to internal controller instead of the external Zetron.
Doug
by Doug
Fri Jan 23, 2015 4:50 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: VHF Quantro PA fail problems
Replies: 9
Views: 1060

Re: VHF Quantro PA fail problems

"Station firmware was version 9 something and we had programmed with with RSS version 14 something, so we felt it was a good idea to update everything to the last and final version, which we did." Was the exciter firmware updated as well or just the SCM? Its funny this post should show up ...
by Doug
Sun Dec 28, 2014 5:21 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Motorola R2590
Replies: 5
Views: 494

Re: Motorola R2590

Thank you for the info. I was doing a bit of familiarizing myself with it today and brought out a set of 4 cavity duplexers. It took a bit longer than usual with the tracking generator but the results were good. I put on my RLB and didn't miss it by much.
Doug
by Doug
Sat Dec 27, 2014 5:45 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Motorola R2590
Replies: 5
Views: 494

Re: Motorola R2590

We'll, I did pull the trigger on it. It's going to take a bit of getting used to. It's got the tracking generator option/cable fault/swr . The cool thing is I was given a two week option on it if I don't like it.
by Doug
Sat Dec 27, 2014 3:28 am
Forum: Test Equipment & RF Equipment Alignment
Topic: Motorola R2590
Replies: 5
Views: 494

Motorola R2590

I'm in a quest for a bit of information. It's time for me to replace my service monitor And I have an option to pick up a calibrated R-2590 for what seems to be a fair price. The problem lies in that the many searches on the net have led to little user opinion. Good /Bad or otherwise? Before asking ...
by Doug
Sun Nov 09, 2014 12:49 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: MSF5000 receive tuning
Replies: 1
Views: 276

Re: MSF5000 receive tuning

The tuning channel thing really isn't that important at this point. I would look closer at your injection filters or possibly the pre-selector. VHF stations pre-selectors are beneath the front panel
Doug
by Doug
Tue Jul 01, 2014 2:34 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Receiver Help
Replies: 7
Views: 564

Re: MSF5000 Receiver Help

If you have a test set available, plug into the receiver (front panel left side) set your test set to meter position 3 (meter switch set to negative) what kind of micro amps are you seeing. It's been a while since I've done a VHF station, I seem to remember it should be between somewhere in the 24 t...
by Doug
Tue Jun 10, 2014 9:37 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 distorted/missing repeat audio
Replies: 1
Views: 275

Re: MSF5000 distorted/missing repeat audio

If your using an external controller and the mrti for your signals, is there a reason why repeater is in your ptt priority? You may have a specific reason I guess inquiring minds would like to know why. It almost sounds like one is competing with the other. Doug I just read your post again and to me...
by Doug
Mon May 12, 2014 11:07 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Looking for MSF N Female Panel Mount to UHF-Min Female
Replies: 9
Views: 481

Re: Looking for MSF N Female Panel Mount to UHF-Min Female

Thanks Bob,
I even didn't think of the pre and post filters
by Doug
Mon May 12, 2014 9:58 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Looking for MSF N Female Panel Mount to UHF-Min Female
Replies: 9
Views: 481

Re: Looking for MSF N Female Panel Mount to UHF-Min Female

The transmit from factory came out of the PA to a pass filter which ran across the back of the station. The pass filter was approx. 12" long double female "N" which is why there was only an 8" piece of feed line for the output of the station.
Doug
by Doug
Sat Feb 22, 2014 7:53 pm
Forum: Converting Motorola Equipment to 900MHz Amateur
Topic: Nucleus programming.
Replies: 10
Views: 1674

Re: Nucleus programming.

Steve,
Let me dig around in my storage Sunday I think I've got a couple manuals on the nucleus. No promises or guarantees
Doug
by Doug
Sun Jan 26, 2014 11:45 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Unusual alarm tones
Replies: 2
Views: 356

Re: MSF5000 Unusual alarm tones

Just an FYI that is normal to hear the oscillation, many of us just move the idle frequency off just a bit to resolve it. The VCO's in a VHF station are software defined there are no adjustments they either lock or fail. Unfortunately these stations send out redundant audio alarms. They'll send the ...
by Doug
Thu Jan 16, 2014 5:13 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: 2 x A/Spectras as a P25 repeater - Help needed
Replies: 5
Views: 708

Re: 2 x A/Spectras as a P25 repeater - Help needed

It's going to a bit more difficult than just a simple patch cable. The biggest milestone I see is getting a low COR to key your transmitter. IIRC Your going to have to do some mods to the radio to even get a cor signal out. This held true with normal spectras maybe astro spectra are different. That ...
by Doug
Sat Dec 07, 2013 5:39 am
Forum: Radio Programming
Topic: MSF5000 "upgrade" to advanced controller.
Replies: 4
Views: 585

Re: MSF5000 "upgrade" to advanced controller.

Hi Bob,
I can't help but to give you and repeater builder a shameless plug.
Doug
by Doug
Fri Dec 06, 2013 4:56 pm
Forum: Radio Programming
Topic: MSF5000 "upgrade" to advanced controller.
Replies: 4
Views: 585

Re: MSF5000 "upgrade" to advanced controller.

http://www.repeater-builder.com/motorola/msf/msf-clb-to-cxb.html Steve, Its a walk in the park, Its going to take you longer to remove the SSCB from the tray than it will be to add the 5 volts line across the bottom. After that go grab one of the def files and build a new codeplug, (I believe its Co...
by Doug
Wed Nov 13, 2013 5:07 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Gm900 help!!
Replies: 5
Views: 1119

Re: Gm900 help!!

The following link has the information that you need:
http://batlabs.com/gm900.html
by Doug
Tue Oct 08, 2013 5:04 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 - analog to digital station conversion
Replies: 2
Views: 355

Re: MSF5000 - analog to digital station conversion

Warm up your soldiering iron, one jump wire and changing a couple jumpers on the board. It will take you longer to take the board out of the plastic tray than to do the mod. Bob (KCBOOBOO)a member here also has some very good articles on programming as well on the repeater-builder site
Doug
by Doug
Thu Oct 03, 2013 4:57 am
Forum: Converting Motorola Equipment to 900MHz Amateur
Topic: MSF question
Replies: 3
Views: 2279

Re: MSF question

Petnrdx:
I may have some 900Mhz stuff kicking around here (uniboard and vco's) if that helps. I wont be able to check today but if your interested I can check tomorrow. If you want to pursue it we'll work out some sort of barter/trade
Doug
by Doug
Fri Aug 09, 2013 5:01 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Linking MSF5000 and MSR2000 Base Station together
Replies: 1
Views: 224

Re: Linking MSF5000 and MSR2000 Base Station together

That's your best bet, doing it in this fashion gives control over each independently. Just make sure you setup your VHF port as a non duplex port. Set your audio levels and you should be good to go
by Doug
Sun Jul 28, 2013 9:38 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 fails to transmit
Replies: 3
Views: 386

Re: MSF5000 fails to transmit

First of all let me say welcome to the board. I'm afraid a little more information is required. Is the station running internal filters or an external duplexer. Is this a new setup or has it been on the air for a while. The transmitter keying is dependent on the feedback voltage coming from the circ...
by Doug
Wed May 01, 2013 4:00 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: How do you get astro radios to power on?
Replies: 6
Views: 364

Re: How do you get astro radios to power on?

It's been soooo long since I've played with that type of radio. Here is another site to browse and look through

http://www.repeater-builder.com/motorol ... tions.html
by Doug
Wed May 01, 2013 12:15 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: How do you get astro radios to power on?
Replies: 6
Views: 364

Re: How do you get astro radios to power on?

You also need to power the control head. If they are dash mount you'll need to power pin 5 of the db15 acc. connector Your speaker audio is also retrieved at the db 15 as well.

http://batlabs.com/spectra.html
Doug
by Doug
Tue Apr 16, 2013 5:19 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: GR300 Range
Replies: 3
Views: 794

Re: GR300 Range

Your situation seems to be more on the line of a receiver problem than a transmit problem. Have you tested the system for desense on the receiver? Unfortunately with repeaters there are a lot of variables involved.
by Doug
Wed Feb 20, 2013 4:16 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Transmitter help
Replies: 14
Views: 671

Re: MSF5000 Transmitter help

Out of curiosity is there a white molex connector on the the left side of the station about 4 inches below the amp? The reason for me asking is in some of the 250 watt stations I've seen the circulator was installed in the high power amp and the driver amp was straight through with no circulator. It...
by Doug
Tue Feb 19, 2013 4:53 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Transmitter help
Replies: 14
Views: 671

Re: MSF5000 Transmitter help

There is a place in the RSS I want to say it's under your channel information, they have a key up delay for the PA. Default is around .39 seconds. They have this delay built in if your running it in a base station configuration to give the antenna relay a chance to switch over to the TX side. In a r...
by Doug
Sat Feb 09, 2013 5:00 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Transmitter help
Replies: 14
Views: 671

Re: MSF5000 Transmitter help

Repeater builder site has what your looking for there's quite a large section on MSF's
Doug
by Doug
Mon Jan 28, 2013 5:20 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....
Replies: 35
Views: 3557

Re: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....

Right now my biggest worry is what are my loses by adding a receive coupler in the mix. As in any build process there is one thing that you over look and mine was not taking any measurements for sinad before and after installing the coupler. I've not had much luck with pre-amps I'd like to stay away...
by Doug
Mon Jan 28, 2013 2:54 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....
Replies: 35
Views: 3557

Re: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....

Trust me it was alot of trial and error and a couple of "OH CRAPS" throw in for good measure. Still waiting to make some test measurements.
by Doug
Sun Jan 27, 2013 1:40 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....
Replies: 35
Views: 3557

Re: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....

First of all thanks to the Pager Geek for his information on passing P25 with an MSF It's going.......passing the p25 was easy, controlling it was the biggest issue. What I had to do was use an XTL1500 as a second receiver. The MSF is garbage in / garbage out however the xtl isn't. What I had to do ...
by Doug
Sun Dec 23, 2012 1:28 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Motorola PURC 5000 350W Amplifier - Specifications?
Replies: 6
Views: 697

Re: Motorola PURC 5000 350W Amplifier - Specifications?

Chris
Although my manual doesn't have any specifics with reference to the 350 watt there is one little blurp I found interesting
"25 Watts, VHF- maybe used as a final amplifier for the 25 watt configuration or as a driver amplifier in the 350 watt configuration"
Doug
by Doug
Mon Oct 01, 2012 1:58 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 and scanning receiver
Replies: 4
Views: 303

Re: MSF5000 and scanning receiver

I had a feeling it would go that way, sometimes it takes someone to look over what you've done and point out something that has been overlooked. At some point I'm going to contact you off list and explain why I'm pursuing this venture.
Doug
by Doug
Mon Oct 01, 2012 6:04 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 and scanning receiver
Replies: 4
Views: 303

Re: MSF5000 and scanning receiver

Hello Bob, Long time....First of all let me say that I'm sorry to those following this post for it's length, I am trying to cover all points. I'm actually messing with the MSF receiver. After a couple hours of messing around yesterday these are my findings to this point. The station started out as a...
by Doug
Sat Sep 29, 2012 3:38 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 and scanning receiver
Replies: 4
Views: 303

MSF5000 and scanning receiver

Anyone around the board ever mess with an MSF5000 and a scanning receiver? I'm kind of looking for someone who has dealt with some of this stuff. I'm comfortable with working around the 5000 and have all the necessities, just looking for alittle guidance.
Doug
by Doug
Tue Sep 18, 2012 10:11 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Corrupted Code Plug Help
Replies: 6
Views: 424

Re: MSF5000 Corrupted Code Plug Help

Just an FYI the 3.28 your seeing is a firmware version, just off the top of my head and glancing at it I'd say secure board version. If that's the case make sure your jumpers ju1 and ju2 are set up apropriately. JU1 in normal position with a TTRC and JU2 in the alternate position with a secure board...
by Doug
Wed Sep 12, 2012 12:46 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Corrupted Code Plug Help
Replies: 6
Views: 424

Re: MSF5000 Corrupted Code Plug Help

Build a new code plug with the default ones and it should clear things up
by Doug
Thu May 31, 2012 3:49 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: tuning MSF5000 TTE1452A
Replies: 8
Views: 385

Re: tuning MSF5000 TTE1452A

There should be no tunning involved with the amp. It all depends on what your drive power is set at. Your mileage will vary a bit but with 7 or 8 watts of drive should obtain the output you desire. Are you using this as a stand alone amp or are you running it in a MSF repeater configuration?
Doug
by Doug
Wed Jan 18, 2012 6:18 am
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....
Replies: 35
Views: 3557

Re: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....

My biggest concern would be the selectivity of the receiver. In an area with a lot of stray rf floating around it could be trouble. I had actually thought about doing something like that for a large ham group in the Chicagoland area. It has multiple recieve sites and several talk out sites. My idea ...
by Doug
Mon Jan 16, 2012 5:25 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....
Replies: 35
Views: 3557

Re: Astro Repeater re-visited [MSF SSCB Mod for IMBE]....

How about.....I haven't quite got this figured out yet I'm kind of typing out loud. Program the station to accept the MRTI as a PTT qualifier and set your receive frequency to some obscure frequency and tune the VCO to that frequecy in doing this it will clear up any error codes the station would ha...
by Doug
Fri Dec 23, 2011 8:35 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Input on repeater crackeling
Replies: 9
Views: 393

Re: Input on repeater crackeling

Sounds like your in for a treat...I've seen where loose mounting hardware (tower bolts flange bolts etc) generate noises
by Doug
Sun Dec 18, 2011 5:54 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: UHF MSF receiver
Replies: 4
Views: 198

Re: UHF MSF receiver

Thanks Bob, I've never really measured the output from either, 6db isn't enough to even mess with if re-engineering is going to be involved, this was kind of a reach in the dark. I guess back to square one. I'm still questioning why and how the component failed. The guy added a pre-amp and I believe...
by Doug
Sat Dec 17, 2011 3:46 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: UHF MSF receiver
Replies: 4
Views: 198

UHF MSF receiver

So here's the senario, I'm working on an msf for a guy that appears to have had the front end over loaded. It took out the injection amplifier which I have verified by taking apart one of my working spare repeaters and used my parts in its place. My question is do you think it would be possible (wit...
by Doug
Mon Nov 28, 2011 7:03 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF 5000 "CLB" (EPROM Version) voltage regulator?
Replies: 12
Views: 412

Re: MSF 5000 "CLB" (EPROM Version) voltage regulator?

d119,
I've got a couple extra scb's laying around....Your welcome to one of them should you want to salvage a couple parts from. No promises that they are any good. Its been years since I've tested them. If I get clb station I automatically switch them over to cxb's, it makes life easier for me
Doug
by Doug
Fri Jul 08, 2011 4:38 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Repeater Linking help needed
Replies: 1
Views: 227

Re: Repeater Linking help needed

There is also an msf programming section that you may want to review as well.....Pretty straight forward. The author is also a member here just an FYI
Doug

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