Is the LDG voter system still in production or has it been discontinued?
Thanks!
Steven H
N8RLW
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Re: Multiple repeaters sharing a common power supply - pros and cons
Hello Don and group,
Call the Avon, Ohio store on the phone and ask for Vince.
1 440 934 5268
Its model Batt1 ?
They had a few that were used and I looked again at the one I bought and it was used one for the price I stated before. ? If I showed you the one I have and a brand new one you would not see the difference. It was that clean when I got it.? They went through it for me to make sure everything was okay so I feel very confident getting a used one from them again. ?? A new one is 500.00 and even I think at that price it well worth the cost considering a dual band mobile radio is 300 to 400. ?? Time you get all of the other items round up and paid for to make a self charging system it will be that cost. ? I had even looked into the West Mount radio system and it only goes to 40 amps draw so that was a no go with me. ? ?
I'll post a picture here later when I'm at the site again doing some wire clean up.
Steven H
N8RLW
Mount Vernon, Ohio
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Re: Multiple repeaters sharing a common power supply - pros and cons
Steve, ? I¡¯m interested in the power distribution panel.? I went onto Vasu¡¯s web site but couldn¡¯t find any information on it.? Can you post a link to it or give me any additional information?? Thanks. ? Don KD9PT ? ?
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From: [email protected] [mailto:[email protected]] On Behalf Of steven harvey
Sent: Thursday, November 17, 2022 12:54 PM
To: [email protected]
Subject: Re: [repeater-builder] Multiple repeaters sharing a common power supply - pros and cons ? [Edited Message Follows] I just went through our repeater here in Mount Vernon, Ohio.??? A communications company call Vasu communications here in Ohio makes a very nice power distribution panel I got one for about 175.00 with tax. Its individually fused and has high amp terminals attached to it too.? ?
I replaced our home made items with this setup not only to clean up the cabinet but to allow easier troubleshooting and it allowed me indivially fuse everything using automotive style fuses. ? It also allowed us to use pass through battery terminals from inside the cabinet to the outside where the batteries are hooked up.? Need to replace a battery just unhook and go.? ?
Gives you the ability to have two power supply's online at the same time and also provides battery back up charging and flip over if needed.??? Right now have to RM-60's in cabinet with a combined ability to give 100amps of draw.??? So if you lose one power supply then your down to 50 amps.?? Best part is they have the ability on the battery side to charge and disconnect when the voltage gets to low all without needing to use commands from controller.?? Plus this allowed me to hot swap power supplies too.
I normally don't recommend products, but this one for the price could not be passed up and only takes 2U.? ? If you can afford another power supply it is better to be able to swap it out while everything is online.
Just my two cents on the subject.
Steven H
N8RLW
Mount Vernon, Ohio
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Re: Multiple repeaters sharing a common power supply - pros and cons
I just went through our repeater here in Mount Vernon, Ohio.??? A communications company call Vasu communications here in Ohio makes a very nice power distribution panel I got one for about 175.00 with tax. Its individually fused and has high amp terminals attached to it too.? ?
I replaced our home made items with this setup not only to clean up the cabinet but to allow easier troubleshooting and it allowed me indivially fuse everything using automotive style fuses. ? It also allowed us to use pass through battery terminals from inside the cabinet to the outside where the batteries are hooked up.? Need to replace a battery just unhook and go.? ?
Gives you the ability to have two power supply's online at the same time and also provides battery back up charging and flip over if needed.??? Right now have to RM-60's in cabinet with a combined ability to give 100amps of draw.??? So if you lose one power supply then your down to 50 amps.?? Best part is they have the ability on the battery side to charge and disconnect when the voltage gets to low all without needing to use commands from controller.?? Plus this allowed me to hot swap power supplies too.
I normally don't recommend products, but this one for the price could not be passed up and only takes 2U.? ? If you can afford another power supply it is better to be able to swap it out while everything is online.
Just my two cents on the subject.
Steven H
N8RLW
Mount Vernon, Ohio
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Everybody keeps talking about mods to the GE voter. E&M signalling is
standard on them, even the old grey ones. So voter tone isn't needed if
you have a relay closure or other good switching. Mods are still required to use a GE voter without status tone if you want to do it right. For starters, you'll want to get rid of the 1950 notch filters on the receiver cards and the audio module to clean up the audio response. Disabling the 1950 detector is also a good idea to prevent voice falsing, as well as disabling the channel failure detection. And you'll want to configure for no AGC. The stock E&M input (active LOW) input requires 12 to 17 volts on the newer black/SMD cards (wider range on the old cards), so not directly compatible with TTL or the logic from many radios/receivers. So, yeah, at the basic level the functionality is there to use E&M instead of status tone, but some additional work, level translation, and other details still need to be addressed - it's not "COR-ready" per se. --- Jeff WN3A -- This email has been checked for viruses by Avast antivirus software. www.avast.com
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Re: Two UHF repeaters sharing the same antenna.
The Motorola sites engineer came up with the solution using only a
BP duplexer on each repeater along with a dual stage isolator.
A 3rd duplexer was not needed.
Jim W7RY
On 11/17/2022 10:01 AM, J Donovan via
groups.io wrote:
The is a diagram using motorola T1500 duplexers for this exact
case, and you can try searching for it. Basically it takes 3 sets
of 1500's each repeater has a duplexer that is then fed into a
third set of T1500 cans to get the separation.
--
Thanks and 73, Jim W7RY
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Could've fooled me, as I don't see a single surface mount component.
Thank you.
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Re: Multiple repeaters sharing a common power supply - pros and cons
Yes, Mr. Donovan, that's a scenario that happens after the grid power is restored; the "charger" try's bring the station battery back up. The solution is to either beef up the breaker and supply or limit the charging current until the voltage potential is not so great to blow such breaker.? The Astron's have current limiting, like the RS-50 rack mount would be a good choice, unless you are running high power RF PA on the stations, then you may need the 70-amp version.? What is the breaker size you are on now that blows (ok trips) ?
Good deal Bob with the team players. I like that kind of project :)??? The local Club, here we upgraded the DC backup for our nodes and each group had their job to do, then came together. Too bad I got COVID from someone in the process but live and learn.
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
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Re: GE MSTR 2 special (Factory Repeater?) FREE
Nearly all of the VHF Sensicon "A" Receivers I ran across back in the 1970's were the ones that had five pipes in the front end. We did have one Receiver in a base station at our college that had six pipes - I think that was the only one of those that I've ever seen. The ones with five pipes still worked excellent for Repeaters using a 600-kHz split. I remember we always needed to add something like 2.2 pf capacitors across each pipe, to get them to tune to 146-MHz frequencies. Even after adding capacitance, sometimes the covers wouldn't go back on the pipes, since the tuning rods stuck out the top of the pipes.
?
I'm dating myself,?here...
?
Larry, K7LJ
?
?
-----Original Message----- From: < [email protected]> Sent: Nov 16, 2022 5:59 PM To: < [email protected]> Subject: Re: [repeater-builder] GE MSTR 2 special (Factory Repeater?) FREE
?
Actually, Frank is there any old Moto stuff that you would like to have?? I finally tossed my 5-pipe sensicon receiver that I used for the repeater in 1974 ! -- - Regards, Karl Shoemaker To contact me, please visit SRG's web site at? for the current email address.
?
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Re: GE MSTR 2 special (Factory Repeater?) FREE
I have a couple of the Motorola factory MT-300 Repeaters. I have one of them that I was able to get the correct low-VHF split modules for, from an MX-340 hand-held radio, replacing the high-VHF split modules that were originally installed in it.? I had the channel elements re-crystalled on a 2-Meter channel by International Crystals, when they were still in business. It tuned up properly on 2-Meters since all of the modules were being used in their original frequency ranges, and worked quite well.?
?
Fortunately, these MT-300 Repeaters came with one of the companion 4-cavity, small TX-RX Duplexers, and the manual. I sent the manual to Eric, WB6FLY (SK) who scanned them and uploaded them to the Repeater-Builder website, which are in the Motorola files area.
?
I picked up these MT-300 Repeaters and the Duplexer at the Spokane Hamfest, some years ago!
?
Larry, K7LJ
?
?
-----Original Message----- From: < [email protected]> Sent: Nov 16, 2022 5:57 PM To: < [email protected]> Subject: Re: [repeater-builder] GE MSTR 2 special (Factory Repeater?) FREE
?
Sure, Frank, it might be fun to play with as I have not seeing this model.? Please run over to the web site and send me your email or number. There's enough amateurs going to Spokane that could bring it. Or I can met half way........... Remember the Motorola version for off-grid sites, using a pair of MX portable radios?? I've build several clones. -- - Regards, Karl Shoemaker To contact me, please visit SRG's web site at? for the current email address.
?
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Re: GE MSTR 2 special (Factory Repeater?) FREE
And it's power supply !!? What is this world coming to???? Being wideband, and I mean very, it was just collecting dust in the leanto. But yea that's how I got started. on .81. You remember our repeater on Bud's tower ? K Jim W7RY
WHAT? Its GONE!!! Jim W7RY
On 11/16/2022 7:59 PM, Karl Shoemaker wrote:
Actually, Frank is there any old Moto stuff that you would like to have?? I finally tossed my 5-pipe sensicon receiver that I used for the repeater in 1974 !
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
--
Thanks and 73, Jim W7RY
-- - Regards, Karl Shoemaker To contact me, please visit SRG's web site at? for the current email address.
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With the modifications they should.
--
-
Regards, Karl Shoemaker
To contact me, please visit SRG's web site at?
for the current email address.
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Just so every knows it doesn't work on narrow band, At least according to the manual.
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This is a newly designed product? Could've fooled me, as I don't see a single surface mount component. Even when hand soldering I consider surface mount easier to work with than thru-hole.
Bob NO6B
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At 11/17/2022 04:48 AM, you wrote: You may need to look at a board house that will stuff the majority of the parts on the board. Depending on qty of boards that may help price point.
Stan
On Nov 16, 2022, at 11:00 PM, DCFluX <dcflux@...> wrote:
???
I have to sit down and figure out the per unit price, but I probably won't be able to compete with the price point once labor is factored in.
On Wed, Nov 16, 2022 at 6:05 PM Chris Boone <<mailto:setxtelecom@...>setxtelecom@...> wrote:
Any idea on the price, Matt? The current price of the RTCM is expensive for several sites, even with $100 off for the ham price.. like most hams I try to be cheap ????
Chris WB5ITT
On Wed, Nov 16, 2022, 2:52 PM DCFluX <<mailto:dcflux@...>dcflux@...> wrote:
Yes.
It's like a cross between the original voter board and the RTCM. But really I wanted a better layout to the original voter.
The board can use an internal GPS and has provisions to run the microcontroller off of it if you have a dual output unit board like the UBlox RCB-F9T.
External GPS is RS-232 and TTL capable jumper selectable.
Added COS input and PL encode output control, but will need software modifications to implement.
On Wed, Nov 16, 2022, 12:34 RFI-EMI-GUY <<mailto:rhyolite@...>rhyolite@...> wrote:
DCFluX
Is this a new RTCM? Details please??
On Wed, Nov 16, 2022 at 11:37 AM, DCFluX wrote:
Radio Thick Client Module just dropped.
--
The Real RFI-EMI-GUY
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Re: Two UHF repeaters sharing the same antenna.
The is a diagram using motorola T1500 duplexers for this exact case, and you can try searching for it. Basically it takes 3 sets of 1500's each repeater has a duplexer that is then fed into a third set of T1500 cans to get the separation.
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Re: Multiple repeaters sharing a common power supply - pros and cons
The big unknown in your case for how big a battery is how long does it take for you to respond if a total power fail occurs. You have to figure the powerloss as time zero, add noticing loss if not monitored and responce time to site with a portable generator or power source, and how long CAN you be without power..
Our ham club which is also the emeregency back up for comms to our county just had a issue where a lightning strike took out the mains to the building and frying one of the RS-50 linear we have. So after power was restored we kept poping the circuit breaker. This was an extreme case that I have only seen 1-2 times in my career,
So with the help from another pro radio engineer we devised a total 12v solution for all 4 repeaters we have. Basically as stated before there is one battery that is not excessively large since we don't expect long outages, and is floated by a 12v power supply. This takes care of the time between power loss and generator start up and stabilize. At the same time the station is monitored by an IP control board that blasts a message to as many users as we want.
Right now the power supply are the ones that came with our Kenwood stations tied together, if you go with this option make sure you use the same outlet on the same phase for power.
Some manufacturers have a beep that occurs with transmission when on battery along with power out drop to extend battery life. I would look at that too. Eventually I have a few Mastr III supplies that actually are made for float charging that we will use in place fo the kenwoods supplies.
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Details!? ?Where is it available?? How much?? ?What does it do that the thin client doesn't?? ??
Vendor website info would be handy.??
Thanks Chuck? ?n0nhj
On Wednesday, November 16, 2022 at 11:40:20 AM EST, DCFluX <dcflux@...> wrote:
Radio Thick Client Module just dropped.
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On 11/16/2022 3:47 PM, Jeff DePolo WN3A wrote: The mods to use SpectraTAC voters with COR are well-documented on the repeater-builder web site and elsewhere.GE voters are even easier.
--- Jeff WN3A Everybody keeps talking about mods to the GE voter. E&M signalling is standard on them, even the old grey ones. So voter tone isn't needed if you have a relay closure or other good switching.
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Re: Multiple repeaters sharing a common power supply - pros and cons
Our repeaters are all under a single radio club and everyone is a team player, so I don't anticipate any political issues.? I was nervous about sharing a single power system among multiple repeaters, but now I am beginning to get more comfortable with the idea.
I am using a 30A Iota power supply in my home station, and I love it.? No more need for a changeover switch and the accompanying voltage drop.? We will definitely need to consider replacing our existing repeater supplies with an Iota supply.
BTW, I once contacted Iota technical support to ask about adjusting the output voltage.? I got very good, prompt support.? The answer was "You can, but it voids the warranty.".? They even sent me instructions on how to do it.
Thanks to everyone for the thoughtful comments and good advice.
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You may need to look at a board house that will stuff the majority of the parts on the board. Depending on qty of boards that may help price point.?
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Show quoted text
On Nov 16, 2022, at 11:00 PM, DCFluX <dcflux@...> wrote:
? I have to sit down and figure out the per unit price, but I probably won't be able to compete with the price point once labor is factored in.
Any idea on the price, Matt? The current price of the RTCM is expensive for several sites, even with $100 off for the ham price.. like most hams I try to be cheap ?
Chris WB5ITT?
On Wed, Nov 16, 2022, 2:52 PM DCFluX < dcflux@...> wrote: Yes.
It's like a cross between the original voter board and the RTCM. But really I wanted a better layout to the original voter.
The board can use an internal GPS and has provisions to run the microcontroller off of it if you have a dual output unit board like the UBlox RCB-F9T.
External GPS is RS-232 and TTL capable jumper selectable.?
Added COS input and PL encode output control, but will need software modifications to implement.
On Wed, Nov 16, 2022, 12:34 RFI-EMI-GUY < rhyolite@...> wrote: DCFluX
Is this a new RTCM? Details please??
On Wed, Nov 16, 2022 at 11:37 AM, DCFluX wrote:
Radio Thick Client Module just dropped.
?
--
The Real RFI-EMI-GUY
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Karl Shoemaker