Doesn't really help because there's no schematics of where they tapped the discriminator or where they found a place to inject flat tx audio.wd9cms wrote:This should help:
http://www.w8ak.com/portrptr/index.html
W8AK has made a repeater out of GP300's and describes how he did it.
Search found 1182 matches
- Sun Aug 17, 2014 9:33 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: GP300 for low-profile repeater transmitter/receiver?
- Replies: 6
- Views: 3290
Re: GP300 for low-profile repeater transmitter/receiver?
- Sun Aug 17, 2014 9:33 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: GP300 for low-profile repeater transmitter/receiver?
- Replies: 6
- Views: 3290
Re: GP300 for low-profile repeater transmitter/receiver?
I'm looking to connect it to a DMK URIx sound fob dealie to use app_rpt.tsunami_australia wrote:If you're looking at making it a repeater wouldn't you be better just to hook it to a small controller of some sort externally?
- Sun Aug 17, 2014 9:23 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Syntor X9000 VHF -- bandwidth? Codeplug EEPROM?
- Replies: 6
- Views: 2596
Syntor X9000 VHF -- bandwidth? Codeplug EEPROM?
Question. I've heard a lot about how lowband X9000 radios can work 6m AND 10m out of the box. What's the bandwidth of a VHF unit like? If I'm using a VHF X9000 on 144.39 MHz, so I need to retune? Also, does anyone know what type of EEPROM the codeplug is stored on? I've read that one can simply copy...
- Sun Jul 20, 2014 11:12 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: GP300 for low-profile repeater transmitter/receiver?
- Replies: 6
- Views: 3290
GP300 for low-profile repeater transmitter/receiver?
I seem to remember the GP300 having a connector at the bottom for optional add-on boards, like aftermarket signalling and such.
Does anyone have the pinout for that?
And does anything need to be enabled in the radio?
Thanks.
Does anyone have the pinout for that?
And does anything need to be enabled in the radio?
Thanks.
- Mon Jun 16, 2014 7:59 pm
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Off topic: Kenwood TK-790 low-power setting with AllStar?
- Replies: 1
- Views: 1750
Off topic: Kenwood TK-790 low-power setting with AllStar?
I've read that Kenwood TK-790's will do 5 watts on low-power transmit. Does anyone know if there is a duty-cycle limit? I'm used to Motorola radios like Maxtracs and GM300's that tend to run hot or even hotter than high power while at low power. Anyone know if the TK-790 will do 5 watt transmit for ...
- Fri Feb 14, 2014 9:33 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Motorola Oddballs through the years
- Replies: 308
- Views: 263172
Re: Motorola Oddballs through the years
Anyone ever see a Motorola MoTrar20? Basically, it was a Type I trunked radio that used crystals inside an oversized Maxar 80 housing. I got one in a trade, and pitched it. Sorry if I made any of you guys cry. Oh, look, there's one on eBay right now. No, I'm not related to this auction at all. http:...
- Sun Feb 09, 2014 2:31 pm
- Forum: Vehicle Radio Installs
- Topic: To spring or not to spring a Larson NMO antenna?
- Replies: 7
- Views: 5098
To spring or not to spring a Larson NMO antenna?
Planning a mobile install.
Since it's a hatchback with a sunroof, I'll be doing two L-bracket mounts near the hood with NMO's.
I'm planning on using Larson 5/8 wave VHF antennas.
Larson has optional springs you can buy.
What are the pros or cons to using springs?
Thanks, guys!
Since it's a hatchback with a sunroof, I'll be doing two L-bracket mounts near the hood with NMO's.
I'm planning on using Larson 5/8 wave VHF antennas.
Larson has optional springs you can buy.
What are the pros or cons to using springs?
Thanks, guys!
- Thu Feb 23, 2012 4:32 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Moden 36 encoder set up
- Replies: 3
- Views: 683
Re: Moden 36 encoder set up
It's your lucky day. I have a Moden36 manual for sale. PM me if interested. Thanks.
- Tue Feb 21, 2012 9:27 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Spectra Repeater
- Replies: 14
- Views: 4621
Re: Spectra Repeater
What's the new way?Will wrote:Josh,
That old way is so obsolete now.
- Sun Feb 05, 2012 1:01 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Astro Saber Small Hi-Capacity Battery Recommend
- Replies: 86
- Views: 46939
- Tue May 24, 2011 12:28 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Motorola Syntor X9000 to Syntor X conversion for APRS?
- Replies: 4
- Views: 1546
Motorola Syntor X9000 to Syntor X conversion for APRS?
I went to Hamvention with a Syntor X VHF T73 or T83 on my list for a single-mode APRS radio. Sure, they're pretty ancient, but they're at least 100 Watts, they are very well heatsinked and are at least fairly reliable. Also, they're easy to convert to an APRS radio. APRS, in case you're not familiar...
- Thu Jan 27, 2011 11:31 am
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Nucleus to Quantar Conversion?
- Replies: 16
- Views: 2630
Re: Nucleus to Quantar Conversion?
What I'm wondering is if one could take a Nucleus and, even with much tinkering, turn it into a P25 repeater. No analog audio at all.
- Sat Oct 23, 2010 10:02 am
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Zetron Model 42 and 49 LTR Controller Help
- Replies: 2
- Views: 1463
Zetron Model 42 and 49 LTR Controller Help
Hey, gang. I've been going back and forth with Zetron's various product specialists, trying to find the Multibase software for some 16 year old LTR controllers. They've been very helpful; but it seems like they're having trouble figuring it out. They've had to do paper-searches through their old fil...
- Fri Aug 13, 2010 9:25 am
- Forum: Experimental and Next Generation LMR
- Topic: 33cm LTR System RF Diagram (draft)
- Replies: 3
- Views: 7226
Re: 33cm LTR System RF Diagram (draft)
Only problem I see is that you need the cans before and after the preamp. You've got to keep it from going into compression and amplifying anything near it. Why are the cans after the receive multicoupler? Thanks for the feedback! I revised the diagram, and put your suggestions into it. http://www....
- Fri Aug 13, 2010 8:17 am
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Nucleus to Quantar Conversion?
- Replies: 16
- Views: 2630
Nucleus to Quantar Conversion?
Can someone please confirm or deny that a Nucleus paging base station can be converted into a Quantar base station capable of IMBE?
- Thu Jun 03, 2010 2:00 pm
- Forum: Experimental and Next Generation LMR
- Topic: 33cm LTR System RF Diagram (draft)
- Replies: 3
- Views: 7226
33cm LTR System RF Diagram (draft)
http://www.kc8ryw.net/900ltr/900ltr.gif
Comments welcome.
I planned for horizontal separation due to roof-top site.
Comments welcome.
I planned for horizontal separation due to roof-top site.
- Wed Jun 02, 2010 5:34 pm
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: best cable for the job
- Replies: 5
- Views: 740
Re: best cable for the job
What if the feedline becomes the antenna? Andrew Radiax.
- Thu May 27, 2010 10:08 am
- Forum: Experimental and Next Generation LMR
- Topic: 900mhz Amateur Smartnet
- Replies: 47
- Views: 28357
Re: 900mhz Amateur Smartnet
Or... use LTR and not have to worry about a 100% duty control channel. 8) From what I understand from LTR, if the home repeater is sending out a MCW ID, it can still respond to requests, and tell the mobile user to another repeater that's free. Conversations moving from channel to channel for mobile...
- Sun May 23, 2010 6:48 pm
- Forum: Radio Programming
- Topic: GTX Service Frequencies - Changing them
- Replies: 0
- Views: 1042
GTX Service Frequencies - Changing them
Stock GTX.EXE puts the service frequencies in the 900 SMR band, not where the 33cm repeater split action is. Need a fix for changing the internal programming points in service mode for putting it right in 33cm 25 mhz split bands? I think I've figured out where it puts those points in GTX.EXE. Get ou...
- Sun May 23, 2010 1:22 pm
- Forum: Radio Programming
- Topic: GTX LTR -- trunking channel numbers
- Replies: 2
- Views: 1823
Re: GTX LTR -- trunking channel numbers
OK, seems to be working in Site Block.
Channel 001 - 079 are in the 33cm band.
Channel 001 - 079 are in the 33cm band.
- Sun May 23, 2010 1:11 pm
- Forum: Radio Programming
- Topic: GTX LTR -- trunking channel numbers
- Replies: 2
- Views: 1823
Re: GTX LTR -- trunking channel numbers
I received some assistance, and wanted to share. I think I figured out which values need to be changed in GTX.EXE. Get out Hex Workshop. Use the base converter. All values are Intel double(64) 1. CHANGE 00041D99 FROM 0000000000008C40 (896) TO 0000000000308C40 (902) 2. CHANGE 00041DA1 FROM 66666666E6...
- Thu Dec 17, 2009 7:26 pm
- Forum: MotoTRBO Portables and Mobiles (4xxx/6xxx) 1.0 Series Subscribers
- Topic: future of MotoTrbo? You guys wanna validate the information
- Replies: 9
- Views: 4141
- Thu Dec 17, 2009 4:28 pm
- Forum: MotoTRBO Portables and Mobiles (4xxx/6xxx) 1.0 Series Subscribers
- Topic: future of MotoTrbo? You guys wanna validate the information
- Replies: 9
- Views: 4141
Re: future of MotoTrbo? You guys wanna validate the information
Read the System Planner PDF.transistor747 wrote:In a webinar yesterday, Motorola said "Connect Plus" multi-site digital trunking for Trbo is slated for next year sometime. There was no talk about what external equipment may be required.
It talks about Connect Plus.
- Thu Dec 17, 2009 3:47 pm
- Forum: MotoTRBO Portables and Mobiles (4xxx/6xxx) 1.0 Series Subscribers
- Topic: Base Station Identifications (BSI)
- Replies: 4
- Views: 2531
Base Station Identifications (BSI)
I just got done looking at the MOTOTRBO System Planners PDF. The thing that I found most interesting is no one at Motorola implemented base station ID into the data sent by the repeater. The repeater has to drop into analog mode to send the ID as MCW, therefore taking down communications from the su...
- Tue Nov 10, 2009 8:14 pm
- Forum: Experimental and Next Generation LMR
- Topic: 900mhz Amateur Smartnet
- Replies: 47
- Views: 28357
Re: 900mhz Amateur Smartnet
I already have three Zetron LTR controllers. Two Z42 and a Z49. If anyone has a manual for these in PDF I'd appreciate it. Ham trunking on 900 has been on my back burner for a few years. The main hold-up is that I have yet to figure out how to get GTX 900 LTR portables and mobiles to actually transm...
- Thu Sep 18, 2008 4:41 pm
- Forum: Vehicle Radio Installs
- Topic: Icom IC-F1821D Mobile Mounting Bracket
- Replies: 1
- Views: 1469
Icom IC-F1821D Mobile Mounting Bracket
Does anyone have a part number?
Thanks.
Thanks.
- Thu Sep 18, 2008 4:29 pm
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Zetron 15 pin terminal strips
- Replies: 1
- Views: 496
Zetron 15 pin terminal strips
Does anyone have a P/N for these from Mouser?
They are used in the Zetron Model 38 and 42 to name two.
They are used in the Zetron Model 38 and 42 to name two.
- Wed Aug 13, 2008 5:00 am
- Forum: Radio Programming
- Topic: GTX LTR -- trunking channel numbers
- Replies: 2
- Views: 1823
GTX LTR -- trunking channel numbers
In the RSS, it seems to convert the frequency entered in the trunking personality into the FCC channel number.
You can program it for out of band, program, and still be stuck with the closest FCC channel number.
Where is the magic list stored? The RSS or the firmware?
You can program it for out of band, program, and still be stuck with the closest FCC channel number.
Where is the magic list stored? The RSS or the firmware?
- Tue Jul 22, 2008 10:21 pm
- Forum: Converting Motorola Equipment to 900MHz Amateur
- Topic: Low Power MaxTrac 900
- Replies: 1
- Views: 8183
Low Power MaxTrac 900
I'm looking to make the MaxTrac 900 12W into something more reliable with lower power (without worrying about a PA burning up) for a repeater transmitter. The VHF and UHF LPI Maxtracs just lack the last section of the PA. But the Maxtrac 900 PA has the last three sections together in the same RF hyb...
- Sat Mar 15, 2008 1:00 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: CA3140E
- Replies: 3
- Views: 891
CA3140E
The CA3140E is NLA at Mouser.
It subs to NTE7144.
The NTE7144 datasheet says it subs to the 741.
???
Which opamp do I use for my RIB? I don't need it now, but I'm putting in a Mouser order, so why not pick up a few spares incase I blow up an Opamp with a homebrew cable.
It subs to NTE7144.
The NTE7144 datasheet says it subs to the 741.
???
Which opamp do I use for my RIB? I don't need it now, but I'm putting in a Mouser order, so why not pick up a few spares incase I blow up an Opamp with a homebrew cable.
- Wed Nov 14, 2007 6:40 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: SSM Programming Cable
- Replies: 2
- Views: 627
Re: SSM Programming Cable
Oh, alright. Now that you mention it, I remember seeing that cable. Thanks again!
- Fri Nov 09, 2007 8:24 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: SSM Programming Cable
- Replies: 2
- Views: 627
SSM Programming Cable
Anyone have a pinout?
- Wed Nov 07, 2007 9:12 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: What are the minimum connections needed for a Spectra?
- Replies: 7
- Views: 1184
Re: What are the minimum connections needed for a Spectra?
Here is what I've come up with: 5 WHI 17 Bus + (RS-422 Input/Output) 11 Shield 13 Mic. Low 12 BLK/YEL 12 Mic. Hi (Input) 14 BLK 50 Bus - (RS-422 Input/Output) 18 BLU 49 Digital Ground 19 BLK/ORG 26 Reset (Input/Output) 21 Shield Bus Shield 22 YEL 48 Switched B+ (Input) 23 BLK/RED 33 Busy (Input/Out...
- Wed Nov 07, 2007 3:13 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: What are the minimum connections needed for a Spectra?
- Replies: 7
- Views: 1184
Re: What are the minimum connections needed for a Spectra?
Yeah, I did buy one off you.
But that's being used for the Astro Spectra.
This home-brew cable is for the Analog Spectra.
But that's being used for the Astro Spectra.
This home-brew cable is for the Analog Spectra.
- Wed Nov 07, 2007 2:25 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: What are the minimum connections needed for a Spectra?
- Replies: 7
- Views: 1184
Re: What are the minimum connections needed for a Spectra?
Making my own cable.
- Tue Nov 06, 2007 11:46 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: What are the minimum connections needed for a Spectra?
- Replies: 7
- Views: 1184
What are the minimum connections needed for a Spectra?
Here is what I've come up with: 5 WHI 17 Bus + (RS-422 Input/Output) 11 Shield 13 Mic. Low 12 BLK/YEL 12 Mic. Hi (Input) 14 BLK 50 Bus - (RS-422 Input/Output) 18 BLU 49 Digital Ground 19 BLK/ORG 26 Reset (Input/Output) 21 Shield Bus Shield 22 YEL 48 Switched B+ (Input) 23 BLK/RED 33 Busy (Input/Outp...
- Wed May 16, 2007 10:51 am
- Forum: Converting Motorola Equipment to 900MHz Amateur
- Topic: 902 Repeaters at Hamvention
- Replies: 9
- Views: 5241
- Tue May 15, 2007 4:43 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Help : MOCOM 70 LIGHTBULB
- Replies: 5
- Views: 984
- Wed May 09, 2007 8:45 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Dayton 2007: The Dinner
- Replies: 16
- Views: 3491
- Tue Apr 17, 2007 10:41 am
- Forum: Vehicle Warning Equipment Discussion
- Topic: LED Lightbars...UGGGHH!!!!
- Replies: 17
- Views: 9278
- Sun Apr 15, 2007 2:59 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Impress Charger Firmware upgrade
- Replies: 21
- Views: 14833
- Thu Apr 12, 2007 6:05 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: MotoTurbo, how secure is it?
- Replies: 34
- Views: 8929
Re: MotoTurbo, how secure is it?
Just wonder how "secure" the digital audio is on MotoTrbo. I'm not talking about a high level of security, just a level of difficulty higher than most people are willing to invest. I have some taxi's that are interested in thwarting the competition with scanners scooping their calls. Anyo...
- Tue Apr 10, 2007 8:26 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Best headsets for noisy areas ( 160db)
- Replies: 8
- Views: 1236
- Tue Apr 10, 2007 10:35 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Interesting Maxtrac firmware/codeplug IC
- Replies: 4
- Views: 661
I have an 800 MaxTrac with a similar Dallas module -- DS1220AB. The radio was modified heavily -- DB15 running out the back, traces cut, etc. It has an 27C256 EPROM that says Motorola RADIUS DIVISON Version 62.02. I guess I could read it on the E/EPROM programmer if anyone cared for me to take a loo...
- Sat Apr 07, 2007 3:42 am
- Forum: Converting Motorola Equipment to 900MHz Amateur
- Topic: GTX 900 -- will mic lines on 16-pin get HearClear'd?
- Replies: 5
- Views: 4264
The GTX doesn't do reverse burst well on transmit.
http://www.repeater-builder.com/motorol ... _info.html
http://www.repeater-builder.com/motorol ... _info.html
- Fri Apr 06, 2007 6:44 pm
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Kenwood buys Zetron!
- Replies: 8
- Views: 1776
- Fri Apr 06, 2007 9:43 am
- Forum: General Motorola Solutions & Legacy Radio Discussion
- Topic: Impress Charger Adapter for HT1250?
- Replies: 3
- Views: 2005
- Sat Mar 31, 2007 4:07 pm
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Good Cheap Source Of SLA Batteries?
- Replies: 3
- Views: 750
Re: Good Cheap Source Of SLA Batteries?
Generic sizes: 12V 7AH, 12V 12AH, 12V 18AH.spareparts wrote:What size? (form factor & AH)?Jonathan KC8RYW wrote:Does anyone have a favorite?
I figured I might get some tips here since some sites use them.
Thanks!
They're for UPSs.
...and hamabouts.
- Sat Mar 31, 2007 1:03 pm
- Forum: Base Stations, Repeaters, General Infrastructure
- Topic: Good Cheap Source Of SLA Batteries?
- Replies: 3
- Views: 750
Good Cheap Source Of SLA Batteries?
Does anyone have a favorite?
I figured I might get some tips here since some sites use them.
Thanks!
I figured I might get some tips here since some sites use them.
Thanks!
- Mon Mar 26, 2007 9:47 pm
- Forum: Legacy Batboard Motorola ASTRO (VSELP/IMBE/AMBE) Equipment Forum
- Topic: Astro Saber Priority Scan Issue
- Replies: 3
- Views: 528
Re: Astro Saber Priority Scan Issue
Not when I go to Dayton.Josh wrote:Here's an idea..... don't use priority scan.
Sheesh, you only have 2 channels in that radio anyhow, I wouldn't listen to one of them (146.76) EVER.
-Josh