zap
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Posts posted by zap
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My model number chart says 9DP6 is a Passport & LTR radio capable of 160 LTR frequencies. Some of the older (pre-2004) were limited to 16 conventional channels. Anything newer than that should be 160 conventional channels. There's a serial number decoder on batlabs.com that will tell you when the radio was made.
Sorry about the type acceptance. As we all know, Part 90 radios meet and exceed the Part 95A specs. My UHF mobile in the truck is a CDM1250, 25 watts, 403-470, and 64 channel capacity. Same radio as the 1550, but no trunking or Passport. The 1250 is actually better for MDC, Quick-Call II, and DTMF. The 1550's are variable on what they support. It's fine for all the UHF services I use.
Also, if you purchase the CPS from Motorola, you will have to also obtain an EID for wide band programming for your GMRS channels. Versions R06.12.07 and older don't require the EID. Motorola locked the software for the narrowband mandate ignoring ham and other bands that use wideband.
HSN4010 for the tan speaker, HSN4018 for black. There are others that will work fine, too. You will need a plug kit to connect the speaker to the accessory connector on the back of the radio. I also recommend using Ignition Sense in the car so the radio comes on and off with the key. If you want, I can give you purchase info on that, or if you want a tan speaker ready to plug into the radio, drop me a PM.
Remember the Audio PA is floating so DO NOT ground either of the speaker leads. Doing so will destroy the audio amp. They are made to float with an 8 ohm load.
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Where are you getting stuck?HELP Is there anyone out there with a VXR7000U that is up to date on programming there repeater.
I need HELP with mine. I have the software and cable, but unable to program successfully. I could sure use some help with it. Thanks Andy WQTQ562 Medford, Or.
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This. I've been forced to install some low tier repeater setups using LMR400. I've always noted that it should've been a different type of coax so when it does have to be replaced in a few years it'll be documented that a senior systems tech stated that. Part of sales persons selling an not consulting the guys who actually have technical knowledge.The problem with any cable that uses 'foil' as the inner shield is that over time it will begin interacting with the braided wire shield and become 'noisy'. This doesn't happen immediately and may take many months to develop, but it isn't a question of "if" as much as a question of "when..." :
For detailed information, see here: http://www.repeater-builder.com/antenna/double-shielded-coax.html
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They may have an office in Austin. Who knows.If it were a commercial LMR repeater that would make sense. However, a GMRS repeater that's located that far away? That makes no sense at all.
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Well, I'm not the one seeking the info, but then I don't (yet) have a service manual for the radio...
It can be set in the front panel. Don't remember if they do MPL though.
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It seems a bit odd that the number listed is in New Hampshire for the "owner" of an Austin, TX repeater...
We live in an era of Nationwide systems. Look at Bearcom's licensing across the country for example. The don't link them all but provide the ability to rent time regionally.
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Got it on the service monitor and squelch shuts at -119 dBm…which worries me. Probably going to break out the breakout box and play with it some or grab another.
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If you can, I've never figured out how...
Info you seek is in the service manual.
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I'll take a look and see if I can't figure out where it is. It could only be at one of a few sites to have any form of wide area coverage. Bee Cave, Trail of the Madrones, and a few more. I know it's not at Bee Cave. I know it's not on the Austonian (Bearcom is the only thing up there). Could be in one of the clusters at Trail of the Madrones.
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I've heard the Maxtrac/Radius heads will not work but I'm not going to question it. I managed to pull a VHF expanded logic GM300 from the junk bin for testing and reading was a success.
Here are some of my discoveries.
Jumper required to enable repeater for headless operation.
The R1225 is built on the same chassis as the GM300 so the GM300 head doesn't just enable programming, it actually mounts (though covers up the RX connector) which gives me an eventual direction I may move this setup.
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Alright, so I managed to rescue 6 R1225s from going into the dumpster today. I decided at least one of them would go into GMRS service. So this will likely be a start to finish. These were all M04 (1-10W UHF) repeaters and were used in an analog trunking system for city services. For those wondering, they were removed in working order due to a wide area P25 upgrade (to VHF). Also they were all utilizing 100W external PA's (reasoning for be LPI repeaters).
As you can see, these are headless. So first step (which I'm still working on) is to read the radio. Getting a control head on it will be the first step.
To Be Continued…
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Make sure hub is disabled.
Which Rick?
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I need some mini-uhf connectors to hook these radios to the duplexer. It came with n x pl-259 cables. I'd like the solder type pin connectors. I found some that gave a choice between standard pin and captive pin. It did not explain what captive pin or standard pin was. Can someone help me with the difference?
Solder type does t really exist for mini-UHF. It really crimp only.
Of if you really want to get energy efficient (the NHRC micro is a good choice) you can run the transmit radio via the ignition sense line. Using an additional timer if there is X minutes of inactivity you can pull power from ignition sense and turn it on and off.
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You can do it with most GM300's. Look up the GR300/500 manual on the repeater builder site.
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I'm just gonna point this out, Motorola PA's are notoriously narrow in their efficiency. A 40 watt rated PA on a Radius series mobile is 23% efficient from 40W to 25W, beyond that its efficiency dwindles. The 25W version is 24% efficient from 25-10 W (but has the same heat sink as the higher power model). In retrospective, the 20W GE custom MVP is 29% efficient from 8-20W.
What do I mean by efficient? I mean that the output in RF is that percentage of the total power drawn in current. That means for your average 25% efficient radio you need 4 times the power output just to provide power. It also tells you how much heat is being generated from the circuit (conservation of energy).
When it comes to solar powered repeaters, one is better off running 10W or less and focusing on antenna systems. Avoid the Chinese junk (even antennas) as you want something you only have to buy once. Quality feedline, (avoid LMR in a full duplex environment), and proper installation. General rule of thumb is your solar system needs to be able to carry your load in snow shedding.
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DB404 is my goodie. A Laird FG450-6 works too.
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Technically that would be a page…which would fall under the beacon category.
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Reminds me of a DPS surplus Mastr Pro in Lubbock. Dual receivers, 200W out on low band…
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I use MDC with the last 3 numbers of my callsign as well.
We have a REACT Repeater here they've opened up for non member use and occasionally you'll hear: "SQUACK-SQUACK-SQUACK-SQUACK-SQUACK-" just over and over again.. Lol.
Sometimes I'll hear it on DPD, I'm sure the Dispatchers get tired of it.. I heard it one time last for about 3 minutes straight, Dispatch trying to talk over them: "Units, check your mics!" and it just kept on going.. "All units go to channel x" Looooord man.. The funniest thing was the ID on it decoded to 0069 for me..
Scrub PL from signaling.
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Easiest way is to utilize a repeater, link controller and link radio. The repeater you are linking to needs to be a different frequency than yours (causes some issues). Your link radio also needs to be using a yagi antenna. You should be able to do this at 1W in most cases but I wouldn't go higher than 5W.
The link radio is programmed (or channeled) like any other repeater you wish to use through your HT or mobile. The link port goes to the link radio and the controller controls the onsite repeater.
When the link is active, the remote repeater will key causing the COR circuit on the link radio to open and pass audio to the controller. The controller then keys the local repeater's transmitter and passes audio from the link radio. When the local repeater receives a COR signal, it keys both the repeater transmitter and the link radio (which in turn keys the remote repeater).
This system can be built upon and built upon. In this case the remote repeater would be the hub and the local a spoke in the hub.
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IP Connected Repeaters
in Technical Discussion
Posted
All Stat is dependent on Asterisk's app_rpt.
Only IP link with analog audio I have going currently is through two Simoco SDB680 repeaters. Native interconnection, will integrate with any SIP so it could theoretically be used for app_rpt linking.
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