Users may not create topics, posts, or private messages containing or relating to the following material (especially pertaining to Motorola copyrighted software, unless you want Motorola to come along and shut this site down):

  • Listing for sale or trade of, or links to sites offering for sale or trade of, or giving away, Radio
    Service Software (RSS) or Customer Programming Software (CPS)
  • Profanity, pornography, defamation, or slanderous remarks directed towards any individual or entity
  • Commercial advertising (except in the Batboard Vendors forum, as approved by the Admin/Mod Staff)
  • Any other items which may be deemed as offensive

If any topics, posts, or private messages containing or relating to the aforementioned material are brought to the attention of the Admin/Mod Staff, they will be deleted.

Additional FAQ items appear here in Forum Rules. Please review them for posting guidelines and further clarification.

Search found 119 matches

by Karl NVW
Tue Sep 10, 2019 1:51 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Radio Shelter Relocation
Replies: 6
Views: 125

Re: Radio Shelter Relocation

If you decide to proceed, YES, you can and should reuse the Heliax lines and pressurized waveguide runs. But first I urge your department to understand the timetable of relocating the shelter and require all affected parties to sign off on the extended period of time that the entire site will be com...
by Karl NVW
Tue Sep 10, 2019 12:50 pm
Forum: MotoTRBO Portables and Mobiles (3xxx/5xxx/7xxx/SL) 2.0 Series Subscribers
Topic: zetron model 30
Replies: 1
Views: 45

Re: zetron model 30

Your friend "Someone" said the user would have to connect the Zetron Model 30 directly to the base station. That's right, it won't interface with a TRBO mobile or portable radio, just to some (not every) TRBO base station. Of course your customer must also comply with the FCC Rules for ope...
by Karl NVW
Mon Sep 02, 2019 12:10 pm
Forum: Motorola CP/CM Series Subscribers
Topic: Mototrbo CPS question: Version
Replies: 1
Views: 368

Re: Mototrbo CPS question: Version

As I recall, versions up through 10.anything still allowed setting analog for either 25 or 12.5 kHz channel width. The requirement for a 25 kHz entitlement keyfile began at 11.0.1 and created significant rancor within the Moto-ham DMR population, including myself. It was not one of Moto's well expla...
by Karl NVW
Tue Aug 27, 2019 6:54 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spanner ?
Replies: 4
Views: 449

Re: Spanner ?

No photo found, but I would start by thinking about removing the volume control or frequency selector switch on VERY old portables, back before all those functions were moved into software. What models did you have to repair often? Another possibility could be the removeable antenna relay for Public...
by Karl NVW
Tue Aug 27, 2019 6:41 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Amateur question regarding APX radios
Replies: 5
Views: 545

Re: Amateur question regarding APX radios

1. APX8000 radios include ASTRO P25, both Phase 1 and optionally Phase 2, along with analog mode. It does not include conventional (non-trunked) digital formats from other manufacturers. nor MotoTRBO. 2. Yes, it's all in the programming. 3' Depends on whether your existing channel can be converted t...
by Karl NVW
Mon Aug 26, 2019 4:54 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Amateur question regarding APX radios
Replies: 5
Views: 545

Re: Amateur question regarding APX radios

Your department's command staff should talk the managers in charge of the dispatch center, the mutual-aid committee, and other digital radio systems in your area. Some decisions need to be made at their level or higher, such as your state's SEIC or Fire Marshall. Folks who are not already experience...
by Karl NVW
Fri Aug 23, 2019 10:25 am
Forum: Vehicle Radio Installs
Topic: 700 trunking antenna on a fiberglass boat roof
Replies: 5
Views: 282

Re: 700 trunking antenna on a fiberglass boat roof

And I too am sorry that as usual I was overthinking the math. Adjust the size of the aluminum foil pie plate to USA food industry standard size of NINE inches. When you squash it flat and duct-tape it to the underside of the cabin roof it will be almost perfect. Or you can use a metal pizza pan 12&q...
by Karl NVW
Fri Aug 23, 2019 10:13 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola Mostar service manuals
Replies: 15
Views: 726

Re: Motorola Mostar service manuals

MOSTAR used the R1801 suitcase programmer to burn a 16-pin DIP code plug. We learned to never burn a batch of CP copies until you had thoroughly tested every possible option in the first one. MOSTAR and its econo-sibling TRAXAR had frequency synthesizer circuitry reputed to be VERY microphonic, espe...
by Karl NVW
Thu Aug 22, 2019 10:40 am
Forum: APX Series Subscribers
Topic: APX8000XE + XE RSM Speaker Mics
Replies: 2
Views: 116

Re: APX8000XE + XE RSM Speaker Mics

First let's confirm: Does the 'noise on transmit, no voice' issue follow the radio or stay with the specific RSM unit? If it follows the radio, those radios might have been programmed for default or locked encrypted transmit (probably ADP) instead of clear voice on that specific talk group. That is ...
by Karl NVW
Thu Aug 22, 2019 10:06 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola SL7550e
Replies: 1
Views: 269

Re: Motorola SL7550e

This is truly a no-brainer. Don't do it. You risk confiscation of your radios and other possessions, temporary legal detention, and potential expulsion. It can be worse if you are caught in an eastern bloc country not politically friendly to the USA.
by Karl NVW
Tue Aug 20, 2019 9:37 am
Forum: Vehicle Radio Installs
Topic: 700 trunking antenna on a fiberglass boat roof
Replies: 5
Views: 282

Re: 700 trunking antenna on a fiberglass boat roof

Same rules still apply that you used to follow on HB, UHF, or 800 MHz in this situation. A thick NMO with metal foil tape (or an 11" aluminum pie plate) on the underside of the roof will get you there. If you are installing on a vessel that runs in rough water, use only the quarter-wave "s...
by Karl NVW
Tue Aug 13, 2019 11:32 am
Forum: APX Series Subscribers
Topic: APX8000XE vs/ APX8000HXE
Replies: 4
Views: 205

Re: APX8000XE vs/ APX8000HXE

There once was a time when I could have answered that question, but I am no longer included in the Product Development loop. Nowadays I don't know any more than the rest of the readers.
by Karl NVW
Sat Aug 10, 2019 6:15 pm
Forum: APX Series Subscribers
Topic: APX8000XE vs/ APX8000HXE
Replies: 4
Views: 205

Re: APX8000XE vs/ APX8000HXE

Nothing new, it's been that way for decades, going way back to the feud between Underwriters Labs and Factory Mutual. It's the same concept with Hazardous Location Listings that the FCC applies to pending hardware type approvals: Product cannot be offered for sale until the approval process is compl...
by Karl NVW
Sat Aug 10, 2019 5:56 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Fixed level audio output from MaxTrac 100
Replies: 8
Views: 3155

Re: Fixed level audio output from MaxTrac 100

Remember to use the pin labeling for the 8-pin mic jack as shown in the manual. Israel did is backwards from everyone one else in the world, but that's what they used and printed in the manuals. Put a 680 ohm resistor in series with the handset audio high on pin 8.
by Karl NVW
Thu Jul 04, 2019 10:20 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: ATIA - Channel Number/Frequency?
Replies: 1
Views: 1073

Re: ATIA - Channel Number/Frequency?

I no longer have access to specific ATIA stream details or docs, but YES, at least one of the four channel frequency attributes you listed should be in the packet. The documentation you are using may well be outdated unless it came with the system release software for the specific system you are mon...
by Karl NVW
Mon Jun 17, 2019 10:33 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: HT750/HT1250 Low band antenna - red color code??
Replies: 10
Views: 1770

Re: HT750/HT1250 Low band antenna - red color code??

Unofficially, engineering field strength tests on the antenna range were in the area of 18 to 24 dB loss relative to isotropic. And it obviously got worse if the user "stored" the speaker-mic coil cord by wrapping it around the antenna.
by Karl NVW
Mon Jun 17, 2019 10:26 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Spectra A7 power issue
Replies: 2
Views: 1306

Re: Spectra A7 power issue

Two c0ommon possibilities: 1) The speaker leads of the Spectra are both isolated from ground. A MaxTRAC speaker feed has one side grounded to chassis. If you had any grounded lead connected to the MaxTRAC (including the antenna connector) you probably fried the audio output stage. ... OR ... 2) It c...
by Karl NVW
Tue Jun 11, 2019 7:44 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Maratrac
Replies: 5
Views: 145

Re: Maratrac

Many low-cost 3rd party controllers with internal CTCSS generators DO inhibit the TX PL as soon as the COR signal drops. That's much cheaper than designing their products to meet commercial usage standards, including the turn-off burst sent during the hang time. But also know that the Maratrac is NO...
by Karl NVW
Tue Jun 11, 2019 7:30 pm
Forum: MotoTRBO Portables and Mobiles (3xxx/5xxx/7xxx/SL) 2.0 Series Subscribers
Topic: How to program a large number of channels?
Replies: 4
Views: 228

Re: How to program a large number of channels?

RFGuy, you have to remember that there are very few commercial or public safety users who change their operating frequencies even annually, unlike some amateur operators (you know who you are) who feel they need to access every possibly active frequency within a 200 mile range. The FCC doesn't allow...
by Karl NVW
Tue Jun 11, 2019 7:16 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: HT750/HT1250 Low band antenna - red color code??
Replies: 10
Views: 1770

Re: HT750/HT1250 Low band antenna - red color code??

If you follow the alignment instructions in the radio manual, tuning of the TX output stage will take the antenna impedance into account on the working frequencies.
by Karl NVW
Sat Jun 01, 2019 6:26 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Keyup Nucleus
Replies: 3
Views: 173

Re: Keyup Nucleus

Nucleus cannot be keyed that way while running in simulcast mode.
by Karl NVW
Fri May 10, 2019 4:12 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Missing Schematic
Replies: 3
Views: 2549

Re: Missing Schematic

So you appear to simply be running Tone Remote Control over a 4-wire connection. Not much to worry about in the 'white smoke' category.
by Karl NVW
Fri Feb 22, 2019 1:16 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Any idead how far a 10 watt lsb radio would tx ?
Replies: 5
Views: 3336

Re: Any idead how far a 10 watt lsb radio would tx ?

My first question would be "Where do you plan to use this equipment?" both from a geographic and a spectrum perspective. Not all countries permit that type of communications or have HF channels speciallly reserved for such usage. Range also depends on the equipment at the other end - talki...
by Karl NVW
Fri Feb 22, 2019 1:11 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: 3rd World LMR Equip VHF
Replies: 4
Views: 3272

Re: 3rd World LMR Equip VHF

Most western hemisphere government entities place restrictions on message content in the amateur bands. Boiled down to basics, a station operating on amateur frequencies can't be used for any commercial or business purposes. No taxis, ambulances, security, GMRS or FRS either. If you are planning to ...
by Karl NVW
Fri Feb 22, 2019 1:08 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: 3rd World LMR Equip VHF
Replies: 4
Views: 3272

Re: 3rd World LMR Equip VHF

Most western hemisphere government entities place restrictions on message content in the amateur bands. Boiled down to basics, a station operating on amateur frequencies can't be used for any commercial or business purposes. No taxis, ambulances, security, GMRS or FRS either. If you are planning to ...
by Karl NVW
Tue Feb 05, 2019 1:06 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola GLN 6323 E Charger
Replies: 3
Views: 3185

Re: Motorola GLN 6323 E Charger

The charger requires a 220 VAC 50 Hz input and the cord has the European plug. It will not charge the battery if plugged into 120 VAC power available here in the USA using a travel adaptor. Just a hunch that the EX relates to an 'extended' duty 10+ hour 5-5-90 battery, which is taller than the stand...
by Karl NVW
Sun Jan 20, 2019 5:21 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Minitor V Rf Board No RX
Replies: 4
Views: 4094

Re: Minitor V Rf Board No RX

Confirmed that you CANNOT change the band of the LB Minitor V in that fashion.
by Karl NVW
Thu Jan 03, 2019 7:23 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Perplexed by Date code newer M accessories
Replies: 6
Views: 4320

Re: Perplexed by Date code newer M accessories

MAL2 is the assembly location code, it's somewhere in Maylasia
by Karl NVW
Sun Dec 30, 2018 6:31 pm
Forum: Consoles
Topic: Centracom Gold B&L - Remote Operator Positions?
Replies: 2
Views: 411

Re: Centracom Gold B&L - Remote Operator Positions?

Yes, it is possible. The hardware is included in the B&L service manual. Design details are in the System Planner document. You may be able to locate one at your local dealer/service shop and borrow or photocopy it.
by Karl NVW
Mon Oct 01, 2018 5:59 pm
Forum: Vehicle Radio Installs
Topic: Can't figure how SSN4005A works.
Replies: 7
Views: 723

Re: Can't figure how SSN4005A works.

It helps when you have all the pieces and don't just guess which wire goes where. If you were plugging the speaker and microphone devices into the proper junction box, you would see that each receptacle was labeled. Both connectors needed to be polarized and captive-locking, and were for two conduct...
by Karl NVW
Sun Sep 16, 2018 5:07 pm
Forum: Converting Motorola Equipment to 900MHz Amateur
Topic: GTX 900 mobile
Replies: 3
Views: 713

Re: GTX 900 mobile

Not exactly. The radio has a wide design range, but there is a band limit in the programming software.
by Karl NVW
Sun Sep 02, 2018 6:53 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Quantar SINAD and pre-selector alignment
Replies: 6
Views: 800

Re: Quantar SINAD and pre-selector alignment

SINAD is measured at the rated audio output listed on the radio specification sheet, NOT wide open. And it's the last step in receiver alignment, after everything else has been peaked up correctly.
by Karl NVW
Sun Aug 26, 2018 1:27 pm
Forum: ASTRO25 Series (XTS/XTL 1500/2500/5000) Subscribers
Topic: XTS2500 Transmitting After Being Turned Off?
Replies: 3
Views: 660

Re: XTS2500 Transmitting After Being Turned Off?

It is possible if the P25 system owner uses positive subscriber access ("whitelist") to detect intruders and then latches them into "Radio Monitor" mode to obtain voiceprint recordings. Another posibility is if the radios are programmed to auto-key after the emergency button is t...
by Karl NVW
Thu Jul 05, 2018 7:59 am
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Astro Spectra 800 radio mod to 700 operation
Replies: 6
Views: 849

Re: Astro Spectra 800 radio mod to 700 operation

The synthesizer in the old 800-only drawer is not programmable to 700 MHz channel freqs and spacings, including the mandatory inter-ops. You really do need to acquire an XTL or newer.
by Karl NVW
Wed May 16, 2018 1:01 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: P25 X2 Technical Specifications
Replies: 5
Views: 4369

Re: P25 X2 Technical Specifications

A valid point but since the original query was from 2014 I think we should leave this until the OP renews the request. I KNOW I should have!
by Karl NVW
Mon Apr 30, 2018 10:27 am
Forum: ASTRO Series (Astro Saber, Spectra, XTS3000/3500) Subscribers
Topic: Off the Fly Adjustment
Replies: 14
Views: 1629

Re: Off the Fly Adjustment

If the receiver is off-freq by over 600 Hz, the Rx sensitivity / error correctibility for ASTRO25 codewords begins to fall off quickly.
by Karl NVW
Mon Apr 30, 2018 10:13 am
Forum: Radio Programming
Topic: MOTOROLA MTX 838 with no MDC signaling enabled inside the RSS
Replies: 1
Views: 898

Re: MOTOROLA MTX 838 with no MDC signaling enabled inside the RSS

If I recall correctly, the 838 was a non-USA trunking radio that did not include or need to use MDC signalling.
by Karl NVW
Sat Apr 28, 2018 6:05 pm
Forum: Consoles
Topic: MCC7500 Questions
Replies: 7
Views: 1480

Re: MCC7500 Questions

You are about to realize that some signalling features that work over simplex channels with analog modulation don't work the same, if at all, on a P25 backbone. Most of those you identified will function in a significantly different fashion. Your department's technical and operational experts must b...
by Karl NVW
Sat Apr 28, 2018 5:41 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Harris XG75 1-Way Crossband Repeat to CDM1250
Replies: 6
Views: 1419

Re: Harris XG75 1-Way Crossband Repeat to CDM1250

Sorry for stomping on toes, it won't happen again. I didn't realize that content of the FCC rules was board-dependent.
by Karl NVW
Sat Apr 28, 2018 5:26 pm
Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
Topic: P25 X2 Technical Specifications
Replies: 5
Views: 4369

Re: P25 X2 Technical Specifications

It would have been 64 bit, but that won't matter since virtually ALL X2 radios were flashed up to real Phase 2 during rebanding. The only X2 radios still existing in the wild would be LSS.
by Karl NVW
Tue Apr 24, 2018 12:42 pm
Forum: Converting Motorola Equipment to 900MHz Amateur
Topic: Need help hex edit patmobile 900mhz
Replies: 2
Views: 1076

Re: Need help hex edit patmobile 900mhz

Nothing sneaky about it, just read tthe FCC Rules. That's receive for the lowest FCC-allowed operating channel in the 900 MHz trunking band. The ISM band is 902 to 928.
by Karl NVW
Tue Apr 24, 2018 12:01 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Harris XG75 1-Way Crossband Repeat to CDM1250
Replies: 6
Views: 1419

Re: Harris XG75 1-Way Crossband Repeat to CDM1250

You and your dept chief both do understand that ANY SIGNAL appearing on your 700 MHz TAC1 will be transmitted on the HB channel, even if there is an emergency conversation already in progress? I doubt that operation will pass muster with your state SCIP; I know it would be rejected by the APCO commi...
by Karl NVW
Thu Apr 19, 2018 3:17 pm
Forum: Base Stations, Repeaters, General Infrastructure
Topic: Achieving 360° Coverage On Side Mount Antennas
Replies: 2
Views: 3220

Re: Achieving 360° Coverage On Side Mount Antennas

You will always have reflections and attenuation when the tower is larger in width than 1/4 wavelength. So put the antenna on the side where you need to talkfurthest, then hope for the best, OR Buiild a new 100 ft tower so that the DB222 antenna can mount at the top without being shadowed by the tow...
by Karl NVW
Wed Apr 18, 2018 6:16 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Maxtrac 144-174 split?
Replies: 5
Views: 1596

Re: Maxtrac 144-174 split?

The ones I remember might not have had FCC T/A, they were being used in other countries.
by Karl NVW
Wed Apr 18, 2018 6:12 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola 208A/B TNC...
Replies: 5
Views: 1070

Re: Motorola 208A/B TNC...

No 208A/B manual in the library here for at least 20 years. In theory you could connect a 2400 baud remote device to its terminal over a 4-wire analog leased circuit, except that most phone companies no longer lease point-to-point conditioned copper pairs. But you might find a compatible modem in th...
by Karl NVW
Tue Apr 17, 2018 1:15 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: CDM1250 Power Pin Short
Replies: 4
Views: 1048

Re: CDM1250 Power Pin Short

1. Power supply not capable of supporting transmit current drain;
2. Radio trying to send an emergency alarm because the trigger jumper is missing?
by Karl NVW
Tue Apr 17, 2018 1:09 pm
Forum: General Motorola Solutions & Legacy Radio Discussion
Topic: Motorola 208A/B TNC...
Replies: 5
Views: 1070

Re: Motorola 208A/B TNC...

The UDS208 A/B was a 2400 baud synchronous landline modem, not a TNC and not 1200 baud. If you want a 1200b async modem that uses the 1200/2200 tone pair that is used with legacy VHF packet networks you should be looking instead for a model 202S or T. It's still not a TNC!
by Karl NVW
Wed Apr 04, 2018 4:00 pm
Forum: ASTRO25 Series (XTS/XTL 1500/2500/5000) Subscribers
Topic: XTL1500 - do you need red ignition sense cable?
Replies: 11
Views: 1792

Re: XTL1500 - do you need red ignition sense cable?

If you want to get 13W delivered to the speaker you have to reduce the load impedance on the amplifier output to half. Ohm's Law, not rocket science.
by Karl NVW
Wed Apr 04, 2018 3:54 pm
Forum: ASTRO25 Series (XTS/XTL 1500/2500/5000) Subscribers
Topic: XTS5000 scan issue
Replies: 4
Views: 1307

Re: XTS5000 scan issue

Could be the zone controller's Site Affiliation timer is shutting off the site when there are no radios on that TG registered at that specific site. Normal default is either 6 8 hours, but some sys ops set it a lot shorter to release unused channels in areas where there may be a lot of roamers using...
by Karl NVW
Wed Apr 04, 2018 3:40 pm
Forum: ASTRO25 Series (XTS/XTL 1500/2500/5000) Subscribers
Topic: Temp/Emergency Repeater?
Replies: 3
Views: 1297

Re: Temp/Emergency Repeater?

However, those radios CAN be programmed for analog simplex on the interop channels in addition to repeater access for wide-area comms. You'll even find they have standard channel designators ending in the letter "D"

Go to advanced search