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Search found 271 matches

by kb4mdz
Sun Jan 07, 2018 1:13 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Setting up Tone Remote?
Replies: 12
Views: 462

Re: Setting up Tone Remote?

Here's a thread with the MCS2000 Access. conn. pinout: http://batboard.dreamhosters.com/viewtopic.php?t=3906 Tho let me ask this question: What's the console setup? A Centracom Console? Or another manufacturer? 2 wire or 4 wire interface? WHy can't you just hang some more tone remotes off the BIM/Li...
by kb4mdz
Sun Jan 07, 2018 10:47 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Anyone Using Ritron Liberty Repeaters ?
Replies: 9
Views: 486

Re: Anyone Using Ritron Liberty Repeaters ?

And isn't that why service pukes hate sales pukes? Esp. when the sales pukes are the ones who rise in the company and take over? I've seen this happen sooo many times.
by kb4mdz
Sat Nov 25, 2017 8:23 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: The Future of Paging and P25
Replies: 7
Views: 526

Re: The Future of Paging and P25

IMO, poor pager RX & Decode is also a function of software decoding, vs. old style reeds/forks, or even active filters. Think there was some discussion of this a few years ago here on batboard. Makes it more important to keep good control of modulation levels. Jim202, maybe it's time to set up s...
by kb4mdz
Sat Oct 14, 2017 4:06 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SLR Repeaters
Replies: 7
Views: 362

Re: SLR Repeaters

Most specifically, how easy is interfacing? My quantars I've got I have connected to some site monitoring equipment. I take out 3 signals, COR, Station Keyed, and a signal that's active when the PTT comes from wireline. Then I do a PTT On for input; Do all this with wildcard signals via the 50 pin t...
by kb4mdz
Fri Oct 13, 2017 5:14 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SLR Repeaters
Replies: 7
Views: 362

SLR Repeaters

Anyone play with the SLR Series of repeaters and can expound on them? I've been asked about them, but don't know any more than specs & brochures & such on MOL. As such, SLR1000 - one to 10 watts, very compact form factor. SLR5000, up to 50 watts, 1 RU high. SLR8000, up to 100 Watts, looks si...
by kb4mdz
Mon Sep 18, 2017 11:35 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: 70v PA question
Replies: 6
Views: 264

Re: 70v PA question

I do a lot of these; been using Bogen CSD2X2VRU; 2x2 square, up to 4 watts via rotary switch on back-can; recessed volume control on face. Connect to proper transformer wires, set wattage switch & drop it in place of a tile. Tho I often set front panel @ max, and put a Brother label over it with...
by kb4mdz
Thu Aug 24, 2017 4:29 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: No TX PL on GM300
Replies: 6
Views: 502

Re: No TX PL on GM300

Do you have a way to check the level of the transmitted PL on the GM300? Or check what level of PL deviation the repeater needs? (tho, that's getting far afield in terms of ease of checking these things out)
by kb4mdz
Sat Jul 15, 2017 5:06 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Site Etiquette
Replies: 5
Views: 443

Re: Site Etiquette

Flogging. In the Town Square. With 3 foot sections of 7/8s hardline.

And forced to eat a printed copy of R56 Site Standards Manual, page by page.
by kb4mdz
Sun Jun 11, 2017 11:51 am
Forum: Vehicle Warning Equipment Discussion
Topic: How to Add a Crystal in Electronic Siren Circuit
Replies: 2
Views: 756

Re: How to Add a Crystal in Electronic Siren Circuit

A crystal wouldn't do for stabilizing the frequency when the battery voltage drops. To stabilize the battery voltage, you would use some sort of voltage regulator to bring the supply voltage for the oscillator circuit to something lower than the 12 v supply. Now, the following is just off the top of...
by kb4mdz
Thu May 25, 2017 7:13 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: 4 Wire over Ethernet
Replies: 11
Views: 1084

Re: 4 Wire over Ethernet

JPS NXU-2?
by kb4mdz
Sun May 21, 2017 3:47 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Oddballs through the years
Replies: 307
Views: 80487

Re: Motorola Oddballs through the years

NSPD wrote:Some clear Visars for the weekend...

Image


One shop's salesman used to refer to the regular Visar as 'a turd with an antenna'. I will grant, the clear versions are kinda cool, tho.
by kb4mdz
Mon May 15, 2017 9:57 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: GM300 to C100 remote
Replies: 7
Views: 501

Re: GM300 to C100 remote

If you just want to do RX audio, you can do a couple different things: 1) Take your RX audio off the speaker leads, accessory connector 1 & 16; this will be after the Volume control, and certainly no impedance matching between the speaker output circuit and the (theoretically ) 600 ohm impedance...
by kb4mdz
Mon May 15, 2017 6:09 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: GM300 to C100 remote
Replies: 7
Views: 501

Re: GM300 to C100 remote

I'll restart typing since I started without fully reading. Dummy me. :-D Yes, you can, but you'll basically need the 'tone remote module' aka tone remote adapter, like a CPI TTP-1 or MR2 http://www.cpicomm.com/ttplitwpics.pdf00; it says that the correct cable is supplied with the MR200. Look on your...
by kb4mdz
Mon May 08, 2017 2:15 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: New member, working on a MSR2000
Replies: 12
Views: 837

Re: New member, working on a MSR2000

OK, then your meter TRN5080 should indicate by some reading that the crystal is oscillating at its fundamental frequency, and maybe be being multiplied up to the L.O. injection frequency. Was the RX working on its original frequiency before you started? How far a freq. change is this? Have you tuned...
by kb4mdz
Sun May 07, 2017 12:48 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: New member, working on a MSR2000
Replies: 12
Views: 837

Re: New member, working on a MSR2000

Couple tips to try: (I can't remember the IF of an MSR2000; maybe something like 10.7 MHz? ) Can you get the receiver to quiet by (figuratively) slamming a signal at the IF frequency at the Receiver? Or, can you measure the injection frequency after it's been multiplied up from the channel element? ...
by kb4mdz
Sat Mar 18, 2017 10:21 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Big cans
Replies: 9
Views: 701

Re: Big cans

no, talking about my sister-in-law's butt is not appropriate here, RFguy.
by kb4mdz
Mon Jan 02, 2017 6:51 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Phone Line Eliminator
Replies: 4
Views: 560

Re: Phone Line Eliminator

No, I've got some leased lines that I need to research a replacement for. Already been told informally by techs that support will be ending, sooner than I want. That's OK, tho, because If I can put in a wireless system that I maintain, I won't have to depend on telco's 9-5 response time & lack o...
by kb4mdz
Sat Nov 12, 2016 11:14 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Handie Talkie Help!
Replies: 16
Views: 1746

Re: Motorola Handie Talkie Help!

madfrenchie -

I think I have copies of the manuals, if you would like me to pdf them & send them. Give me a couple days to look.
by kb4mdz
Wed Oct 19, 2016 9:41 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Pin 4 Constant Voltage
Replies: 3
Views: 526

Re: CDM1250 Pin 4 Constant Voltage

What condition are you using to activate Pin 4 to Low? Quick-Call? MDC? And your Alarm Re-Arm may not be the right thing, I use Permanent External Alarm on my setups, for what that's worth. Check your timing parameters on teh Accessory Configuration tab. Mine defaulted to Accessory Power Up Delay of...
by kb4mdz
Sat Sep 03, 2016 5:42 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Small SCADA Type Remote Question
Replies: 18
Views: 1476

Re: Small SCADA Type Remote Question

I'll tell you what NOT to get; anything that runs in 27 MHz CB frequencies. Very good friend told me of one system, same application, and the firm that put it in, well, they don't seem to understand radio at all. LOS, with some trees? Might be able to get away with some 900 MHz FHSS radios; non-lice...
by kb4mdz
Fri Aug 05, 2016 6:24 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM750 Modified
Replies: 3
Views: 636

Re: CDM750 Modified

OK, first look at what pins in the Accessory connector are used; if it's acting as a 'black box', you can still guess what is Mic Audio, PTT, RX Audio, maybe a COR, from the connector. The last shot with the wires soldered to the inside of the accessory connector can help you deduce something, too. ...
by kb4mdz
Thu Jul 14, 2016 6:33 pm
Forum: Vehicle Radio Installs
Topic: New Generation NMO Mount needed
Replies: 14
Views: 1638

Re: New Generation NMO Mount needed

Ahh, the tyranny of a large installed base of less-than-optimal technology. Kinda like the QWERTY typewriter layout. I gotta admit, he's got a point about the bundle that is currently used; putting 'curves' into the coax. My solution for fineshot1 would be to open the package of cable as one of the ...
by kb4mdz
Sat Jun 11, 2016 4:00 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Quik-Call II Delayed Alert Tone
Replies: 2
Views: 1038

Re: Quik-Call II Delayed Alert Tone

To quote a previous boss: "That doesn't make any sense. Really?" All the CDM1250's I've seen alert right after the 2nd tone, don't wait for the carrier to drop. Hmmm, what's the firmware version of the radio? I have about 28 fire station alerting systems under my care, and a large assortme...
by kb4mdz
Fri Mar 18, 2016 7:48 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MDC1200
Replies: 2
Views: 635

Re: MDC1200

Well, I had a long shpiel on this, then it dropped. MDC1200 is a form of (low speed) data communications on a radio channel. Stands for Motorola Data Communications, 1200 bits per second (there was an older version, MDC600, for yes, 600 bps). Probably one of the most common uses is PTT ID or ANI; ea...
by kb4mdz
Wed Mar 09, 2016 11:57 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Stat-Alert Signalling Manual
Replies: 5
Views: 2339

Re: Stat-Alert Signalling Manual

Bought the 2 manuals off eBay, received them this past Saturday. :-)
by kb4mdz
Fri Feb 26, 2016 6:27 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Stat-Alert Signalling Manual
Replies: 5
Views: 2339

Re: Stat-Alert Signalling Manual

I did find that one; already archived on my disk.

I'll admit, I'm not even sure of the title. Been a while since I saw the reference that I took it from.

Thanks for looking.
by kb4mdz
Sun Feb 14, 2016 3:06 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: CDM and Motorola Tone Remote Adapter Channel Issues
Replies: 19
Views: 1763

Re: CDM and Motorola Tone Remote Adapter Channel Issues

CDM1250 only has 4 pins available; that's why you can only got to 15 channels.

It's kinda weird. I always have to go back to my notes from the previous effort to do a new one.
by kb4mdz
Wed Feb 10, 2016 5:22 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: CDM and Motorola Tone Remote Adapter Channel Issues
Replies: 19
Views: 1763

Re: CDM and Motorola Tone Remote Adapter Channel Issues

Bumping this old thread; FMROB, I seem to have come across a similar thing. I've got a UHF CDM1250, first I had it on a CPI TTP-1; worked fine. But, I thought I have 16 channels, I want to see if I can use them all; had a Moto L3276 sitting around; wired up a cable, attached it to the radio (only pu...
by kb4mdz
Wed Nov 18, 2015 1:32 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Stat-Alert Signalling Manual
Replies: 5
Views: 2339

Stat-Alert Signalling Manual

Anybody have a e-copy or paper version of the Moto "Stat-Alert Signalling" manual?

If it's paper and you send it to me, i'll scan it to a file & send it back with the original.

Thanks!
by kb4mdz
Mon Nov 09, 2015 5:28 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: AT&T PTT product
Replies: 5
Views: 848

Re: AT&T PTT product

WHo set it up? AT&T? A real 2-way tech? An IT goober?
by kb4mdz
Mon Nov 09, 2015 1:23 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: AT&T PTT product
Replies: 5
Views: 848

Re: AT&T PTT product

Why? What's wrong with it? Is there anything right about it? What's the interface into your exisiting system?
by kb4mdz
Thu Nov 05, 2015 6:58 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: AT&T PTT product
Replies: 5
Views: 848

AT&T PTT product

Anyone have a chance to touch the AT&T PTT product yet? The idea has been thrown at me, but right now it's just an idea. I want to talk to someone who has been involved in setting it up or troubleshooting it when it goes face down.
by kb4mdz
Wed Sep 16, 2015 9:59 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: L3276A Tone Remote Adapter; 2Wire v. 4 Wire
Replies: 2
Views: 585

Re: L3276A Tone Remote Adapter; 2Wire v. 4 Wire

Yup. That's it. When it goes to 4 Wire; Radio RX audio moves to the outside pair (wires 1 & 4 of a 4 wire jack) and TX is on the inner; (2 & 3).

problem solved. All it took was a couple banjos & alligator clip leads & a fresh head.
by kb4mdz
Fri Sep 11, 2015 12:11 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: L3276A Tone Remote Adapter; 2Wire v. 4 Wire
Replies: 2
Views: 585

L3276A Tone Remote Adapter; 2Wire v. 4 Wire

Friday afternoon tearing my hair out. Have (2) of the L3276 TRA's and I've been using them to test out a CPI TR10-16F-FD (which includes it being 4Wire). Even tho the 3276 has just a single DIP switch section, SW3-3, to go from 2Wire to 4 Wire, it doesn't seem to switch into 4 Wire mode. Thing works...
by kb4mdz
Fri Sep 04, 2015 11:47 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motrac D73MHT-3100-A mobil question
Replies: 17
Views: 1329

Re: Motrac D73MHT-3100-A mobil question

1) Yes, it can be changed in frequency. You'll have to get a new Transmit crystal and a new Receiver crystal. 2) A leeeetle more complicated. Legally, no. And its "5KHZ Narrowband" is compared to the older "15 KHz wideband"; whence the transition from 15 KHz to 5 Khz was a long t...
by kb4mdz
Mon Jul 27, 2015 5:40 pm
Forum: Consoles
Topic: MCC5500 E&M + channel steer
Replies: 3
Views: 757

Re: MCC5500 E&M + channel steer

Yes, you set up channel steering using the CPS, using the programmable pins as inputs, and setting them as Channel Steer 1, Ch.St. 2, Ch. St. 4 (it's binary), and then everything else, PTT, TX Aud, RX Aud, & COR/PL if your using it. All defined in the Accessory Pins tab of the Radio Configuratio...
by kb4mdz
Fri Jul 17, 2015 11:54 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar intermittent PA failures; non-fatal
Replies: 7
Views: 761

Re: Quantar intermittent PA failures; non-fatal

Hmmm, good thought, Bob M.

I'll worry about it week after next. For now, I think I've forestalled nuisance alarms.
by kb4mdz
Fri Jul 17, 2015 1:19 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar intermittent PA failures; non-fatal
Replies: 7
Views: 761

Re: Quantar intermittent PA failures; non-fatal

Yeah, think I'm gonna have to tie a P.S. status line into site monitoring, maybe the +5VDC, to try to track things. That, and some delay on the PA Fail; it always self-clears in 3 seconds. Never more, never less. Yup, I had found them alright, you're right, and they were blanked, too. Another sign o...
by kb4mdz
Thu Jul 16, 2015 11:01 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar intermittent PA failures; non-fatal
Replies: 7
Views: 761

Re: Quantar intermittent PA failures; non-fatal

OK, i've visitied my stations that gave the odd "PA Fail" signals, nothing seems amiss, they just wanted Daddy to pay attention to them during the holiday weekend. FWIW, when I connected to them I saw the Date & Time in the stations were blank, or rather defaulted to 1900/01/01 or some...
by kb4mdz
Mon Jul 06, 2015 9:32 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Speakers for a fire station
Replies: 7
Views: 1192

Re: Speakers for a fire station

Seems like a kinda roundabout way to do what you want. If you can define what you want. Just trying to understand what you're describing, it sounds like it could get complicated if you go more than about 3 speakers. And adding any more would be an additional nightmare. What I've done, several times,...
by kb4mdz
Fri Jul 03, 2015 6:37 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar intermittent PA failures; non-fatal
Replies: 7
Views: 761

Re: Quantar intermittent PA failures; non-fatal

RFguy - OK, I'll admit I just lost brain cells on that; totally forgot about station logs. OK, time for a site visit ASAP. Any special ones I should look at first? Hmm, since I've got network access there for site monitoring, maybe I could put an ethernet-to-serial device to log in remotely... Ahhhh...
by kb4mdz
Fri Jul 03, 2015 7:39 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar intermittent PA failures; non-fatal
Replies: 7
Views: 761

Quantar intermittent PA failures; non-fatal

I have a couple VHF Quantars, just straight analog, at a site in a main/standby configuration (tho not the Quantar-manual offered main/standby config; for a couple other reasons). I've got a site monitoring system set up for RF Forward & reflected, PTT Status, COR, and sensing the PA FAIL/GOOD s...
by kb4mdz
Thu May 28, 2015 11:48 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Oddballs through the years
Replies: 307
Views: 80487

Re: Motorola Oddballs through the years

Andy's exactly right. There's a small FD, Whitakers, NC. that had one of these on a truck. Finally failed ummmm, 5 or 6 years ago. Amp was still good, I think it was the speaker cone. Right at the pump panel, which was in a 'pass-thru' from side to side, behind the main cab and firing straight at th...
by kb4mdz
Fri May 22, 2015 10:05 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: propagation path
Replies: 4
Views: 618

Re: propagation path

Got the Free Space loss; looking for ballpark figures for going thru a suburban area of mixed hardwood & pines. 2 dB? 5?
by kb4mdz
Fri May 22, 2015 8:42 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: propagation path
Replies: 4
Views: 618

propagation path

Can anyone give me a ballpark loss for a 900 MHz signal, thru mixed hardwoods & pines, suburban area, of a 1/4 mile & a 1/2 mile path? Been getting spanked a bit (but spanking back a good amount) for a point to multipoint link. Link is working now, esp. at the 1/4 mile point, but over the 1/...
by kb4mdz
Sun May 17, 2015 12:53 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Service monitors - comments welcome
Replies: 2
Views: 649

Service monitors - comments welcome

My shop is looking at getting a new service monitor, and I'm looking for opinions. Currently we have 3 R2600 series, one with XTS/XTL Autotest capability, and an R8000 with currently just XTS/XTL Autotest, and tracking generator & cable fault. And I love the R8000; great performance for me, nice...
by kb4mdz
Wed Apr 15, 2015 4:54 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Accessory Pin Question
Replies: 6
Views: 876

Re: CDM1250 Accessory Pin Question

There's some explanation here in the forums, but I'll try to pull together a better description of it all later. Basically, the Channel Select 1, 2, 4, & 8 labels are the binary equivalent of the decimal channel number. C.S. 1 active low sends it to Channel 1 in the list; C.S. 2 sends it to Chan...
by kb4mdz
Tue Apr 14, 2015 5:35 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Accessory Pin Question
Replies: 6
Views: 876

Re: CDM1250 Accessory Pin Question

CDM1250 does indeed do channel steering; Pins 6,8, 12 or 14. can be programmed for channel steering.

Andrewsim - care to share your wireless remote mic build?
by kb4mdz
Sat Apr 04, 2015 5:49 pm
Forum: Radio Programming
Topic: Quantar programming help
Replies: 3
Views: 1068

Re: Quantar programming help

There are some files, like help files/descriptions of the wildcard pins & functions, but I've not found them directly accessible for easy reference. At one time I started to try to do screenshots & convert them to text files, but didn't get done before having to head on to something else. I'...
by kb4mdz
Mon Mar 23, 2015 12:15 pm
Forum: Motorola Digital and Voice Paging
Topic: Minitor II or III receiver board project?
Replies: 2
Views: 495

Re: Minitor II or III receiver board project?

Oooh, long time since I been MInitor II technician. Don't remember how the RX is set up; whether the whole RX is on one board, or RX to IF on one, and a IF-detector board , then the audio/decoder board. Well, from what I remember and what I know, I'm guessing you want maybe just the audio out? About...

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