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Search found 820 matches

by bernie
Sun Apr 02, 2017 6:27 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2001D keypad jibberish
Replies: 2
Views: 1076

Re: R2001D keypad jibberish

My two bits worth:
I think that the NOVRAM is corrupted.
Do special function command 79. (To enter the special function press both cursor keys at the same time.)
This should also set everything to default.
by bernie
Mon Apr 01, 2013 7:22 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Micor UHF Base/Repeater Station Issue
Replies: 5
Views: 420

Re: Micor UHF Base/Repeater Station Issue

My two bits worth:
There is a transistor on the chassis next to the power control board.
That can cause your problem.
by bernie
Mon Apr 01, 2013 7:13 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Voting System/Spectra Tac comparator/MTR2000
Replies: 3
Views: 614

Re: Voting System/Spectra Tac comparator/MTR2000

My two bits worth: I have seen this before. The SQM has a 13db pad in the front end (Rev B and above) that is why the level as measured at the SQM should be -13DBM0 If noise bursts occur on the audio link the GT decoder operates so fast that the input attenuator is set to the noise peak. Eventually ...
by bernie
Mon Apr 01, 2013 6:52 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF 5000 power cycles after warming up
Replies: 2
Views: 241

Re: MSF 5000 power cycles after warming up

My two bits worth: I would highly suspect that the electrolytic caps on the main power supply are bad. If the station has battery stand by option with NO battery, the regulator should be set to 14.5V because the regulator is very slow to respond. The reason the station resets when keyed is that the ...
by bernie
Mon Apr 01, 2013 6:14 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2001C CRT Display Wavering and Noise on startup
Replies: 2
Views: 398

Re: R2001C CRT Display Wavering and Noise on startup

My two bits worth: The reason that your display is distorting is caused by a 60 hz AC field beating with the vertical scan rate. Nearby transformers are often the cause, a soldering station, or some other device. You can also have stray fields from the power transformer. I have seen missing shoulder...
by bernie
Wed Oct 12, 2011 9:36 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: START SITE CONTROLLER - Questions...
Replies: 3
Views: 395

Re: START SITE CONTROLLER - Questions...

Hi: I do not want to discuss this in an open forum. This RSS is NOT supposed to be in the USA. It is on one 1.44 floppy, runs on DOS. Motorola originally programmed the code plugs with an ancient HP computer. This programmer crashed in the early '90s, no one was left that knew the HP operating syste...
by bernie
Tue Oct 11, 2011 9:00 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: START SITE CONTROLLER - Questions...
Replies: 3
Views: 395

Re: START SITE CONTROLLER - Questions...

John: The Start Site controller has a code plug U48. All of the system information is in this code plug. Any change such as call sign, channel frequency is in the code plug. The controller can be managed over a dial up modem, or a local terminal. Call me at 808.292.5100, or e mail "bernie4837@c...
by bernie
Sat Feb 27, 2010 1:31 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2200B Synthesizer module repair?
Replies: 2
Views: 387

Re: R2200B Synthesizer module repair?

My two bits worth: The "A5" can be a real can of worms! Using the manual, try various frequency settings to determine which circuit is at fault. There are some reed relays that can cause problems. By the way, the "A5" module in the R2001A,B,C are the same except for two electroly...
by bernie
Sun Jan 31, 2010 3:12 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: SpectraTAC console site and status display?
Replies: 10
Views: 555

Re: SpectraTAC console site and status display?

My two bit's worth: It is a great idea to be able to monitor the voter front panel. Beware! Certain customers confuse a voting system with a vehicle location system. They become confused if the voted receiver is not in the same general location as the subscriber unit. They do not appreciate such thi...
by bernie
Mon Sep 21, 2009 7:26 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: msf5000 power molex
Replies: 2
Views: 235

Re: msf5000 power molex

My two bits worth: Pin 1 RED A+ to control tray. 2 White A+ to Casting 4 Black Ground NEVER supply A+ to the control chassis with OUT the 9.6 reference which comes from the IPA module in the casting. The station is programmed on the R1800 programmer. I can make code plugs for this station.
by bernie
Mon Sep 21, 2009 6:54 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Motorola R2001/D service monitor... help / assistance
Replies: 4
Views: 951

Re: Motorola R2001/D service monitor... help / assistance

Nick: I do not have the CD, however, I do have a spare manual that I could possibly loan you. The 2008 is in the same very thick and expensive manual. Every option is included, except the schematic for the latest processor board is not in existence. The latest manual only has the board lay out, Dave...
by bernie
Fri Sep 04, 2009 11:21 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Startsite with Desktracs need reprogramming
Replies: 1
Views: 173

Re: Startsite with Desktracs need reprogramming

My two bits worth:
e mail me at "bernie4837@clearwire.net.
I have rebanded many systems.
by bernie
Tue Jul 28, 2009 11:09 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Weird Warning Tone
Replies: 11
Views: 485

Re: MSF5000 Weird Warning Tone

My two bits worth: This is a garden variety el chepo connector, available at the parts store. Be sure to replace the male pins also, or the problem will re occur. I usually just solder the lead on the pin, replace the connector if it ever becomes necessary to replace the board. Bad filter caps in th...
by bernie
Sun Jul 12, 2009 11:08 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Convert msr2000 for 12.5 khz
Replies: 4
Views: 368

Re: Convert msr2000 for 12.5 khz

My two bits worth:
Unless you have an adjacent channel problem, why change the IF filter?
Just set the IDC for narrow band spec.
by bernie
Fri Jul 10, 2009 2:16 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 Narrow Band Capability
Replies: 4
Views: 412

Re: MSF5000 Narrow Band Capability

My two bits worth:
Unless you have adjacent channel interference, I do not think it is necessary to modify the receiver.
Just align it to narrow band specs.
by bernie
Fri Jul 10, 2009 2:11 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: DB Prod SP-1894 Combiner Network
Replies: 2
Views: 322

Re: DB Prod SP-1894 Combiner Network

My two bits worth: I have attempted to find some specs on this unit, but all I find is links to this item. I SUSPECT that this is a notch type duplexer. The stubs may be a harmonic filter. An analyzer with tracking generator would reveal what you have. I have tuned several similar duplexers years ag...
by bernie
Mon Jul 06, 2009 8:29 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Moto R2014D(R2001D) Generates BAD RF Interference!
Replies: 6
Views: 619

Re: Moto R2014D(R2001D) Generates BAD RF Interference!

My two bits worth: NO it is NOT supposed to radiate. Why it is radiating is another matter. Broken coax shields, loose shields on the RF synthesizer are possibilities. I have heard of power supplies generating RF, so try switching the reference to EXT (switch on bottom of unit) If the problem remain...
by bernie
Mon Jun 01, 2009 9:03 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: VHF MSF5000 Firmware Upgrade
Replies: 8
Views: 621

Re: VHF MSF5000 Firmware Upgrade

My two bits worth: The new firmware is on 27C512 chips. I suggest finding a station with V5.xx firmware and copying the chips. Perhaps some one could e mail you the .dat file, providing you have access to a chip programmer. Some of the firmware does come from the RSS, but the RSS has to have the nec...
by bernie
Mon Jun 01, 2009 7:57 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: MSF5000 max deviation
Replies: 2
Views: 336

Re: MSF5000 max deviation

My two bits worth:
I have seen eepots get out of synch with the memory. Run the eepot to both extremes.
Be sure you have V5.xx firmware.
I do not think this portends future failure.
by bernie
Wed May 27, 2009 1:33 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Adjusting base stations
Replies: 6
Views: 759

Re: Adjusting base stations

My two bits worth: It seems you wish to make a "Block & Level" diagram for your system. From a functional view point you want the signal that is transmitted from one of your stations to re produce the received signal from one of your subscriber units. (Buzz word for a radio) To accompl...
by bernie
Mon May 18, 2009 8:24 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Do you [dial up FM broadcast on your service monitor]?
Replies: 17
Views: 1290

Re: Do you [dial up FM broadcast on your service monitor]?

My two bits worth: I have always tuned FM broad cast stations on my analyzer. I also used to dial up FM stations on units doing burn in test in the depot. Gives a known signal for reference. A Simulcast paging system can be used for frequency calibration verification. These things DO break, problems...
by bernie
Mon May 18, 2009 8:16 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Motorola R-2001D - Is this normal?
Replies: 4
Views: 538

Re: Motorola R-2001D - Is this normal?

My two bits worth: No, the chirp is not normal. Should you be concerned is another matter. Observing the Spectrum display can give you an idea how things are working. Observe a known stable signal. Various signal sources within the synthesizer are employed depending on the frequency. I would be conc...
by bernie
Tue May 12, 2009 5:52 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola 1928-2008...900MHz MX300 in 1975?
Replies: 12
Views: 1597

Re: Motorola 1928-2008...900MHz MX300 in 1975?

My two bits worth: The first Motorola 6809 trunking systems had 5 channels. 120 W tube type amplifiers. Been known to function for weeks at a time. The controller key switches had to be left in service enable or it would crash, no watch dog, so it had to be physically re booted. The mobile was a Mic...
by bernie
Mon Apr 13, 2009 6:50 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Solar Power Backup system
Replies: 5
Views: 255

Re: Solar Power Backup system

My two bits worth: Now I see. Actually, you are proposing a PV system backed up by utilities, not the other way around. I think this is what you want: Use a power supply with a "Smart" battery charger, (An Outback inverter which also could drive a LV disconnect) not just a constant voltage...
by bernie
Sun Apr 12, 2009 3:05 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Cat 5 cable for local desksets?
Replies: 6
Views: 542

Re: Cat 5 cable for local desksets?

My two bits worth: I have seen this before: Starts with one, then two etc. It is CHEAPER!! Local control desk sets do not generally use 600Z balanced circuits as good engineering would indicate for a multi remote system. Because you can get away with one or two using cat 5 or any other scheme does n...
by bernie
Sun Apr 12, 2009 2:37 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Solar Power Backup system
Replies: 5
Views: 255

Re: Solar Power Backup system

My two bits worth: I completely agree, except perhaps there are other reasons: Perhaps the solar panels, as well as other items are at hand. I think it is a worth while experiment to see if it is practical. Perhaps planning for a site that is truly off the grid. Then it could be political: Governmen...
by bernie
Sun Apr 12, 2009 12:44 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola 1928-2008...900MHz MX300 in 1975?
Replies: 12
Views: 1597

Re: Motorola 1928-2008...900MHz MX300 in 1975?

My two bits worth: I think that you are probably right. I have been in the 2 way radio business since 1968. After working for a GE 2 way shop, which was also a RCC, I went to work as a Motorola field tech in Hawaii in '72. I have participated in some of the early work in the 820 band. I installed a ...
by bernie
Sat Apr 11, 2009 1:34 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola 1928-2008...900MHz MX300 in 1975?
Replies: 12
Views: 1597

Re: Motorola 1928-2008...900MHz MX300 in 1975?

My two bits worth:
I note that the picture has the light duty battery, as well as the long case.
I would not be surprised if this was a prototype that never went on sale.
The 900 equipment is very similar to the 800 equipment.
by bernie
Sat Apr 11, 2009 1:07 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Looking for early simulcast trunking diagrams
Replies: 1
Views: 264

Re: Looking for early simulcast trunking diagrams

My two bits worth:
Kauai county has such a system.
5 channel, 5 site simulcast with rubidium standards, MSF5000 stations.
It is maintained by PWC. (Pacific Wireless)
I installed it in '95, my last Motorola project before I "retired".
by bernie
Sat Apr 11, 2009 12:23 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Fairfax County, VA trunking system failure
Replies: 5
Views: 434

Re: Fairfax County, VA trunking system failure

My two bits worth: Yes, the failsoft feature that I describe applies to Type 1,ll, AMSS as well as simulcast using the 6809 controller. The last system that I installed for Motorola was in '95, a type ll, 5 site, 5 channel simulcast system. An antique today. I still maintain a couple of "Legacy...
by bernie
Sat Apr 11, 2009 1:24 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Solar Power Backup system
Replies: 5
Views: 255

Re: Solar Power Backup system

My two bits worth: I would recommend that you use a solar charge controller (such as the Trakstar MPPT by Mornigstar) with MPPT, a low voltage disconnect is absolutely necessary if you wish to preserve your batteries. The low voltage disconnect function could be used for the transfer to some other p...
by bernie
Sat Apr 11, 2009 12:31 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Fairfax County, VA trunking system failure
Replies: 5
Views: 434

Re: Fairfax County, VA trunking system failure

My two bits worth This condition is called FailSoft. There are several reasons that a system might go into failsoft. There MUST be at least one Control channel, And one voice channel available or the controller will go into fail soft. There can also be a fatal failure in the central controller, or a...
by bernie
Mon Mar 30, 2009 8:51 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2600B display problem.
Replies: 4
Views: 581

Re: R2600B display problem.

My Two bits worth: I wonder what a replacement costs, if it is even available. I notice that it is not a standard monitor that uses NTSC video. The PCB looks like a Motorola design, in that it seems to have a Motorola part number etched on the board. The manual indicates 2 boards, mine has only one....
by bernie
Sat Mar 28, 2009 5:56 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: R2600B display problem.
Replies: 4
Views: 581

R2600B display problem.

My two bits worth: Now it is my turn: My R2600B started to develop a horizontal fold over, which got worse until the display went out completely. My manual treats the display board as a non reparable item to be replaced if it fails. I am planning to remove the board and test all the components in th...
by bernie
Wed Dec 10, 2008 10:30 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Faulty Motorola 2001D/HS Service Monitor
Replies: 12
Views: 1246

Re: Faulty Motorola 2001D/HS Service Monitor

Nigel: That insulator goes between the control board (A4) and the charger board (A3). Line voltage vs logic voltage is not a pretty sight, there is line voltage in the transformer on the A3, I have had to repair units where the transformer came loose and eventually contacted the control board. There...
by bernie
Mon Nov 17, 2008 8:48 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Faulty Motorola 2001D/HS Service Monitor
Replies: 12
Views: 1246

Re: Faulty Motorola 2001D/HS Service Monitor

My two bits worth:
This is a common failure.
I would replace whatever caps are required to return the board to original condition.
Unless there is a problem with damaged traces, or some other reason.

I use caps from the parts store, never originals, nothing magic about them.
by bernie
Sat Nov 15, 2008 12:30 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Faulty Motorola 2001D/HS Service Monitor
Replies: 12
Views: 1246

Re: Faulty Motorola 2001D/HS Service Monitor

My two bits worth: The power, and oven lamps as well as the oven circuit is powered by the battery charger power supply on the A-3 board. The main switching supply is not running. I would test the diodes on the A-5 board. I find that these diodes often short, causing no operation of the switching su...
by bernie
Sat Nov 08, 2008 2:08 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Trunking Capabilities
Replies: 12
Views: 1369

Re: Motorola Trunking Capabilities

My two bits worth: It seems that you are having problems with plastic case failures, which seem to be an isolated occurrence. I have seen contact preservatives such as "Cramolin" cause the plastic connectors to fail months after being exposed to the chemical. Sun tan lotion used to do this...
by bernie
Sun Nov 02, 2008 8:49 pm
Forum: Test Equipment & RF Equipment Alignment
Topic: Motorola R2001B
Replies: 17
Views: 1943

Re: Motorola R2001B

My two bits worth: I would look at the 24 pin ribbon connector for the A-11 module. If the plug has come unseated you could have this problem. Caution! these pins break very easily. Some times the 24 pin socket has to be replaced. the original TI low profile socket is not reliable. I use a tye wrap ...
by bernie
Fri Oct 10, 2008 7:19 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: swr/watt meter
Replies: 11
Views: 966

Re: swr/watt meter

My two bits worth: Yes, the Telwave meter has no slugs and looks nice BUT, unless they changed the design the VSWR readings are way too high. As long as there is NO VSWR it reads or can be calibrated to read the correct power. That is using a calibrated source the meter is aligned in one direction, ...
by bernie
Thu Oct 09, 2008 11:20 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Mounting Antennas in Trees- Ideas?
Replies: 4
Views: 607

Re: Mounting Antennas in Trees- Ideas?

My two bits worth:
A taxi company in Kailua-Kona strapped a 20' station master into a Norfolk pine with an old seat belt.
The tree was about 20 or 25'.
Remained there for a couple of years.
by bernie
Thu Oct 09, 2008 11:07 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Name this noise
Replies: 31
Views: 2167

Re: Name this noise

My two bits worth: I think that I heard something about 3/4 of the way that sounded like data. But then you indicate that this is a DPL system. This only happens when the transmitter is keyed. Sounds as if you are having intermod with your own transmitter. That is how the receiver stays unsquelched....
by bernie
Thu Oct 09, 2008 10:39 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Mitrek Control Head, help needed.
Replies: 7
Views: 1066

Re: Mitrek Control Head, help needed.

My two bits worth: You definitely need a manual. Would help if you mentioned the model number. A few points to keep in mind about your Mitrek. The speaker leads MUST NOT be grounded. The microphone ground is also tied to the PL HUB, (Hang UP Box). If this gets grounded you will have an alternator wh...
by bernie
Thu Oct 09, 2008 10:26 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: swr/watt meter
Replies: 11
Views: 966

Re: swr/watt meter

My two bits worth:
I would definitely go for the Bird.
I have been using them for 45 years now.
They turn up at ham swap meets, as well as flea bay.
They are rugged, reliable, accurate, as well as repairable.
Keep in mind that the watt meter is an oracle: You must interpret the results.
by bernie
Tue Sep 09, 2008 11:52 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Is it possible to build a simple Tone Remote?
Replies: 5
Views: 573

Re: Is it possible to build a simple Tone Remote?

My two bits worth: The device you need is generically known as a "Tone Remote Adapter" There have been many companies that produced these over the years. Unless you have much time and no money, I would purchase a commercial product. CPI comes to mind. The "Guard Tone" is -30dbm b...
by bernie
Tue Sep 09, 2008 11:10 am
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Motorola R2001/D service monitor... help / assistance
Replies: 4
Views: 951

Re: Motorola R2001/D service monitor... help / assistance

My two bits worth: I guess it depends on what the problem is with the attenuator. Does the attenuation display jump around, or does the actual input/output power? If it is a matter of the display the problem may be the wafer switch on the front of the attenuator, or a plug that has come loose, or an...
by bernie
Thu Aug 21, 2008 12:36 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: S-1327B Service Monitor
Replies: 4
Views: 1473

Re: S-1327B Service Monitor

My two bits worth: I used to repair and calibrate these critters. I still have several parts units. You need to get the proper service manual. The first thing to check is the power supply voltages. At this age the filter caps tend to fail. There are trouble shooting trees which will aid in determini...
by bernie
Mon Jun 09, 2008 10:10 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MX340 with talkaround/offset switch
Replies: 4
Views: 412

Re: MX340 with talkaround/offset switch

My two bits worth: As I recall the VHF MX 300 used separate channel elements for receive and transmit. Since the VHF band in the US generally has no standard for TX-RX separation an offset crystal would only be useful if all channels had a common separation, such as mobile telephones, or ham repeate...
by bernie
Sun Jun 08, 2008 7:56 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MICOR Unified Chassis
Replies: 7
Views: 752

Re: MICOR Unified Chassis

My slightly less than two bits worth:
I was thinking of a mobile.
by bernie
Thu Jun 05, 2008 1:57 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: MICOR Unified Chassis
Replies: 7
Views: 752

Re: MICOR Unified Chassis

My two bits worth: Being an old time factory trained technician, I prefer to keep things as stock as possible. The power supply is common to all stations except the high power versions. There are two versions of the Micor power supply, the ferro resonant which is inefficient, but bullet proof, and t...

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