[Repeater-Builder] Verizon Tarif
Anyone know if Verizon has a published tarif for repeater interconnects? (Amateur Radio, not LMR)
[Repeater-Builder] Re: UHF System Budget Example
--- In Repeater-Builder@yahoogroups.com, rahwayflynn mafl...@... wrote: I'm working with a relatively new non-profit that needs analog-only coverage over their 26 acre campus. Site is pancake flat, no hills. Anyone have a finance spreadsheet with the costs associated with a single-site UHF system build out? Even though much of the equipment will be used, the board likely will want to see the what new would cost. Side note: they have an existing 60 foot tall building to house the repeater, so the tower itself is covered. Thanks folks - there is plenty of excellent advise here. To fill in the blank spots: * Site is in the southern end of New Jersey * 60' building has no HVAC or elevator equipment (best description is a fire lookout tower) * ~1/4 of the buildings have basements * Used hardware that we have: UHF Motorola Quantar, 200 feet of LDF5-50A, and a Stationmaster 455-8D Fiberglass Antenna (470-482 MHZ according to the part number) * Pipe mount brackets for the antenna New items will likely be the radios, my thumbnail budget was $550 per radio (with charger and battery).
[Repeater-Builder] Re: LinRepeat = linux repeater controller software
--- In Repeater-Builder@yahoogroups.com, walscobry walsco...@... wrote: I found references on the web to a repeater controller software for linux but can not find a working download for it. Called LINREPEAT ??? Any links to working downloads? or info on on other repeater control software? http://app-rpt.qrvc.com/ http://www.xelatec.com/xipar/sites/default/files/app_rpt_install_00_09.pdf
[Repeater-Builder] Andrew Supressor ID
Anyone have an idea what band the Andrew APT-DFDM-3 is for? APT is the series, DF/DM refers to the 7-16 DIN connectors, -3 has me stumped. I picked up 6 of them in sealed bags, but no documentation. Martin
[Repeater-Builder] Re: RF Fuses
Anritsu Accessory: MP612A and MP613A (fuse and fuse holder) -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Dave Sent: Saturday, March 20, 2010 3:37 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] RF Fuses Any ideas where I can buy RF fuses, either the actual fuse element or the combination holder/fuse say in a BNC configuration, to portect the input of a spectrum analyzer or service monitor? Dave WB2FTX
[Repeater-Builder] Re: 900 meg Spectra radio
$210.00 - I just bough two from KA3IDN. Search under 900Mhz Spectra on eBAY. Martin --- In Repeater-Builder@yahoogroups.com, Nate Duehr n...@... wrote: On 2/27/2010 7:54 PM, Fuggitaboutit wrote: Why cant someone just come up with a 900 meg fm mobile for amateur use? They would sell a zillion of them . What would you pay for it? Nate WY0X
[Repeater-Builder] Re: 900 meg Spectra radio
K3JLS - The wayback machine has a bit of information: http://web.archive.org/web/20050907131941/http://www.k3jls.com/ Although with the 128 channel slots, that would seem to cover the entire 900Mhz band plan Martin --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: Joe Burch was his name. It was a frequency agile control head that could be set up for most any type of synthesized commercial radio. You entered the frequency and tone via a keypad. Chuck WB2EDV - Original Message - From: Chuck Kelsey To: Repeater-Builder@yahoogroups.com Sent: Monday, March 01, 2010 8:20 PM Subject: Re: [Repeater-Builder] Re: 900 meg Spectra radio Been there, done that. There was no interest in the ham community. Why? It required modifications that most were not willing to tackle. At the moment, the name of the guy escapes me, but I did one of his modifications to a 6-meter Delta-S several years ago. He has since given up on the idea, but it worked on most any radio. Chuck WB2EDV - Original Message - From: Paul Plack To: Repeater-Builder@yahoogroups.com Sent: Monday, March 01, 2010 8:16 PM Subject: Re: [Repeater-Builder] Re: 900 meg Spectra radio Hmmm... What if someone came up with a board which could be retrofitted to a Spectra to give it ham-style programmability via front-panel controlsm, or even a separate control head? It wouldn't be interesting to the big manufacturers, but then, neither was the GLB Channelizer. 73, Paul, AE4KR - Original Message - From: rahwayflynn To: Repeater-Builder@yahoogroups.com Sent: Monday, March 01, 2010 6:00 PM Subject: [Repeater-Builder] Re: 900 meg Spectra radio $210.00 - I just bough two from KA3IDN. Search under 900Mhz Spectra on eBAY. Martin --- In Repeater-Builder@yahoogroups.com, Nate Duehr nate@ wrote: On 2/27/2010 7:54 PM, Fuggitaboutit wrote: Why cant someone just come up with a 900 meg fm mobile for amateur use? They would sell a zillion of them . What would you pay for it? Nate WY0X
[Repeater-Builder] Re: 85VAC to 12 VDC?
Easy to breadboard at home: Grab a transformer with a 120V and 18V secondary. Feed it with 90 volts AC, it should product somewhere around 16 volts AC on the secondary. Filter and regulate as necesssary. --- In Repeater-Builder@yahoogroups.com, AJ aj.grant...@... wrote: They've offered to cut in a power inserter at this location to feed up to 4 amps of 90 VAC to us (roughly 85 VAC at that point in the plant) - what is out there for a reasonable cost effective solution to convert this to 12 VDC?
[Repeater-Builder] Site Monitoring
Any suggestions on reliable freeze warning thermostats? I have a Liebert RCM8CE Remote Alarm Monitoring system and would like to add high quality thermostats for low high temp warning.
[Repeater-Builder] Re: Side mount to wooden utility pole?
You might want to take a look at Laird Technologies part number SMK http://www.tessco.com/products/displayProductInfo.do?sku=15293eventPage=1 I have used them with punch lock clamps http://www.punch-lok.com/ to pole mount antennnas. Side Note: I have an AutoCAD drawing of a home brew version if there is a person handy with a welder Martin --- In Repeater-Builder@yahoogroups.com, AJ aj.grant...@... wrote: Looking at side mounting a fiberglass repeater antenna on a wooden utility pole. Previously had railroad microwave dishes at the very top (about 55' AGL) which has since been decommissioned. Our permit allows up to 35' AGL to the base of the antenna. We've been going back and forth with one of the local hams that happens to be an engineer with regard to building a side mount from Unistrut channel with roughly a 36 offset from the face of the pole. My question would be what exactly is the minimum spacing for side mounting off of a wooden utility pole? Coverage does not necessarily need to be omnidirectional as there is a fairly large ridge to the east of the site and the targeted coverage area is to the north and west. The photo that got me thinking about this was from the 147.03 repeater move site documentation - http://www.qsl.net/ac7el/RepeaterMove/Antennas.jpg It appears this antenna is maybe 4 offset from the side of the pole. 73, AJ, K6LOR
[Repeater-Builder] Re: Was Repeater Battery Question
http://www.newmartelecom.com/LVD-Rackmount/LVD-Rackmount.html http://www.newmartelecom.com/LVD-Wall-Mount/LVD-Wall-Mount.html --- In Repeater-Builder@yahoogroups.com, Thomas Oliver tsoli...@... wrote: can you recommend a good low voltage disconnect? tom
[Repeater-Builder] Re: XLINK BT, Blue Tooth for Cell Phone Connection to Repeaters at the site
Brian, If you can find one: Telular http://www.telular.com/terminals.asp RJ-11 connector, and provides precision dial tone and supervision. --- In Repeater-Builder@yahoogroups.com, bbe...@... wrote: Hi Eric, John and the Group! Saw you post about the Xlink BT. Neat Idea! I never thought of Blue Tooth. I picked up one of these little guys on Ebay last week and started to experiment with it. Seems kind of nice. It should work out, .. Any suggestions so I do not reinvent the wheel? Anyway great post! 73, Brian WD9HSY
[Repeater-Builder] Re: dispatch centers run through the internet
Jed, A couple of things: Is this going to impact the Fire Departments ISO (Public Protection Classification Program) rating by dispatching from a residence? Dispatch is 10% of the total ISO/PPCP score. Does your proposed IP based solution meet the requirement of ISO for the potential 10%?See http://www.isomitigation.com/ppc/3000/ppc3002.html for the details. You might want to take a look at NFPA 1221, Standard for the Installation, Maintenance, and use of Emergency Communications systems. If this is the document your AHJ is going to use, I don't see any reasonable way for a residence to meet the requirements. Martin --- In Repeater-Builder@yahoogroups.com, Jed Barton j...@... wrote: Hey guys, I am working on a project and am wondering if anyone has done this. Here's the proposal, to setup a dispatch center for an FD, where the dispatchers can sit at home and work the entire thing. This is not a very busy department, that's why they thought it would be good to do it. I've done a lot of research, and it can certainly be done. This obviously brings up a lot of debate for a number of reasons. In looking at it though, the relyability of the net is very good compared to a verizon phone line. Curious if anyone has done something like this before. For the phone system, we'reusing a virtual phone system that has proven relyability. Thanks, Jed
[Repeater-Builder] Re: Dropping the Autopatch--Keep 911
Larry, I would first reach out to the public safety entity that manages the PSAP/911 system where the repeater is physically located.If they are OK with you using an unactivated cellphone, there are several ways to accomplish what you want.The terms relevant to the PSAP staff are UN-INITIALIZED and NON-INITIALIZED phones. Both are going to cause inaccurate data to be displays at the PSAP.It's several degrees worse then trying to explain you are on a phone patch when calling 911. * Un-initialized phones are wireless phones that were activated at one time with a service plan and call back number. Previous user's information may still appear when calling 9-1-1. * Non-initialized phones have never been activated for service. These phones may be purchased off the shelf. NI phones will display wholly random information depending on who made the phone. If you end up using a current production cellphone, Telular http://www.telular.com/ makes a device that provides a standard RJ-11 PSTN interface. There are other manufacturers, but I am not sure they are available to the end use. Possibly adding a cellphone with the RJ-11 to one of the club member cell phone accounts as a second phone might be a cheaper alternative to land-line service. Martin --- In Repeater-Builder@yahoogroups.com, larynl2 lar...@... wrote: In a few days we will be dropping dialtone service to our repeater. However, there is still a desire to somehow dial 911.
[Repeater-Builder] Re: Wanted: Custom NWS Weather Alert SAME Audio
SAME code Specification: http://www.nws.noaa.gov/nwr/same.pdf Web based SAME Encoder: http://archive.drewburden.com/projects/noaa-same/ cracked wrote: I stand corrected. There's a link right next to his abstract with complete docs, photos and source code. If I have to build something, that'll be it...but I'd still rather find a software generator, or at least a couple recordings from some EAS/SAME test box out there. --- In Repeater-Builder@yahoogroups.com, cracked crac...@... wrote: I stand corrected. There's a link right next to his abstract with complete docs, photos and source code. If I have to build something, that'll be it...but I'd still rather find a software generator, or at least a couple recordings from some EAS/SAME test box out there. James K7ICU
[Repeater-Builder] TDE-6090A antenna
On the RB website at http://www.repeater-builder.com/antenna/pdf/420-welded-yagi.pdf, Skipp graciously posted the measurements for a welded 420MHZ link antenna. I was thinking of taking a stab at building one. Questions: 1.Anyone have a detail drawing or photograph detailing how the driven element is fed? 2.Would additional director elements make a difference?
[Repeater-Builder] OT - WTB
Plan is to stream audio from a mixed mode T band repeater system. I am looking for a pair of range 4 low power Astro Spectra radios. Please reply off list with offer and prices.
[Repeater-Builder] Tower Foundations
One of my family members is putting up a tower to support his business radio (farm) , the family GMRS repeater, and a fairly large microwave dish to obtain internet.The choice so far is a Rohn SSV compromised of the following sections: 10NH, 9NH, 8N, 7N, and 6N. Here the question: The local PE who approved the prints suggested using drilled belled foundations. This nearly doubles the cost of each foundation in terms of drilling and concrete. Typically how much additional resistance to overturning motion do they add above straight sided holes?
[Repeater-Builder] Re: Closed Repeaters
--- In Repeater-Builder@yahoogroups.com, MCH m...@... wrote: The other sub-issue here is interference. If someone starts using a frequency someone else has been using, that's intentional interference. Does anyone have the right to intentionally interfere with someone else? Operating on an occupied frequency always has been against the rules. If anyone wants to put on their own repeater, they can. A pair (frequency) might not be available in the band they want, but I doubt every repeater pair is used anywhere - including the most densely populated areas of the country. I wanted a reliable P25 digital system to use. Every pair in my area is supposedly coordinated. http://www.metrocor.net/frequencylist.htm Many are paper repeaters that are supposedly local to me. I put up a mixed mode P25 machine on VHF. The NAC is set to the digital equivalent of CSQ. The system ID's itself per 97.119. The antenna has a deep null toward the active system on my pair (which is actually below the radio horizon). The system is engineered to provide local coverage only. No linking, no IRLP, just a basic P25 local repeater. The point being I would not care if other used the system. It's been up for a more then a year. Not a peep from anyone other then the handful of people I told about it.
[Repeater-Builder] Re: Closed Repeaters
Mr. Alfieri, I understand you are a volunteer, and appreciate your efforts on behalf of the amateur community. I also understand that MetroCor does not have the resources to track down out-of-service machines, and depends on the honesty of the amateur to relinquish coordination when he takes a system permanently out of service. That being said, and with all due respect: Over a 60 day period, if I cannot bring up a coordinated repeater with a 125W Motorola Spectra sitting on top of a 50+ foot building into a unity gain antenna, using the PL codes published on the metrocor website, A) it does not exist, or B)is out of service. Martin --- In Repeater-Builder@yahoogroups.com, Captainlance captainla...@... wrote: WE would be very interested in your supplying us with the list of the many paper repeaters on 2m. in your area that you claim to be on 2 meters. lance Alfieri President, MetroCor, Inc.
[Repeater-Builder] Re: Closed Repeaters
I haven't even touched on the fact that repeater usage is down dramatically in most areas in the country. Note the decline in the number of system listed in the NY/NJ area http://www.metrocor.net/144MHz.htm http://web.archive.org/web/20050226221406/http://www.metrocor.net/144MHz.htm
[Repeater-Builder] Re: ROIP - Cheap
Ethernet on a fiber backbone. --- In Repeater-Builder@yahoogroups.com, Kevin King kc6...@... wrote: Martin, What transport are you using between the routers? Are you Ethernet to another router or do you have a T1 wic in the 2600's? -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of rahwayflynn Sent: Saturday, July 18, 2009 10:20 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: ROIP - Cheap I have the setup that Kevin Describes under construction now. Cisco has apps notes on their website at: http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtlmrip.html total hardware cost was ~$475.00 for both routers and the cards. The radio traffic is in a seperate VLAN with high enough QOS to avoid issues. Martin
[Repeater-Builder] Re: ROIP - Cheap
--- In Repeater-Builder@yahoogroups.com, George Csahanin geo...@... wrote: Has anybody ever found a cookbook setup for this. I have a pair of 2600's, and the VIC-2E/Ms, and NM-1's, but it seems my IOS version is 12.3 and won't do it, plus, IOS, while fairly intuitive, has so many crankhandles that I get lost in the setup. George, You need the 2500XM. The minimum vintages are at http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtlmrip.html Once I have this squared away, I will dump the config and upload it to the library. Martin
[Repeater-Builder] Re: ROIP - Cheap
I have the setup that Kevin Describes under construction now. Cisco has apps notes on their website at: http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtlmrip.html total hardware cost was ~$475.00 for both routers and the cards. The radio traffic is in a seperate VLAN with high enough QOS to avoid issues. Martin --- In Repeater-Builder@yahoogroups.com, Kevin King kc6...@... wrote: Ok here are some prices for the Cisco solution. Cisco 2600XM router 50 to 200 bucks on eBay depends on what cards might be in router. VIC-2E/M 12 to 40 Bucks on eBay, NM-2V 33 bucks buy now on eBay. This is what you need on each site minimum. If you hooked up with a ham that is a Cisco Jock, you should be able to do each site for less than 200 bucks. -Kevin
[Repeater-Builder] Re: Motorola Mototrbo Repeaters Linked
--- In Repeater-Builder@yahoogroups.com, w...@... wrote: I do believe that Mototrbo is 6.25 compliant because of the two voice channels in a 12.5kHz slot. Glenn The Mototrbo upgrade for the MTR2000 station is also 100% duty cycle CCS (at reduced power from what I understand) Martin
[Repeater-Builder] Re: Motorola Mototrbo Repeaters Linked
The statement that for a reduction in power was required is from my Dealer, the same person who provided the confirmation that the upgrade existed and was not urban legend. I will check with him for the document number that his statement was based on. Side note: I have a pair of MTR2000 in analog service that we beat the heck out of. No slight on the MTR family was intended. Martin --- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: Martin, Perhaps you understand incorrectly. The MTR2000 is already rated for continuous duty, in all bands and power settings. I first became aware of its durability when I found a Union Pacific Railroad repeater in Opticom service that was running key-down, 24/7/365, for over two years. Whether that operation is legal or not, is irrelevant to this discussion. I now have seven MTR2000 repeaters in service, both VHF and UHF, with no down time. Please, don't opine about the MTR2000's capability until you have a working knowledge of its durability in severe service at high duty cycles. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of rahwayflynn Sent: Saturday, July 04, 2009 5:34 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Motorola Mototrbo Repeaters Linked --- In Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , w8ak@ wrote: I do believe that Mototrbo is 6.25 compliant because of the two voice channels in a 12.5kHz slot. Glenn The Mototrbo upgrade for the MTR2000 station is also 100% duty cycle CCS (at reduced power from what I understand) Martin
[Repeater-Builder] Re: Noise on UHF
--- In Repeater-Builder@yahoogroups.com, Kevin King kc6...@... wrote: Do a search on the Cisco site for EFI. This will do what you want over an IP link. See http://www.cisco.com/en/US/docs/ios/12_3t/12_3t7/feature/guide/gtlmrip.html for the details
[Repeater-Builder] Re: Motorola Quantar T-5365A
--- In Repeater-Builder@yahoogroups.com, Robert Pease r...@... wrote: What can people tell me about these Any good on 2 meters. What's a good price for one? Rob, The Range 2 unit covers the 2 meter band just fine. I have one in service with no issues at all. Lives on the same site with a paging, a buch of VHF public safetytransmitter on 152.0075, The price is dependant on power, options and firmware. Take a look at http://www.repeater-builder.com/motorola/quantar-id/quantar-article.html on how to ID a potential unit. Martin
[Repeater-Builder] Quantar widlcard question
Question for the Quantar Experts:Is it possible to set the quantar up as a base station, conventional, csq, and only unmute when a particular 4 digit DTMF string is received? The radio should revert to muted mode 2 minutes after the last PTT activation.
[Repeater-Builder] Re: Quantar widlcard question
1K is for the SAM option is less then half the cost of using a Zetron HEAR decoder. Might you have part numbers so I can add it to the MOL account? --- In Repeater-Builder@yahoogroups.com, nj902 wb0...@... wrote: Unfortunately, a Quantar has no intrinsic ability to decode DTMF unless it is equipped with a SAM option. SAM = Station Access Module. With the SAM option you can do exactly what you want with a combination of SAM and wildcard programming. The SAM option can be retrofitted in the field. You can order the module from the Motorola parts department for about $1K. You will also need the SAM RSS program. Programming the Quantar SAM and wildcard options is not a trivial task. Your other choice is to use an external third party DTMF decoder. - --- In Repeater-Builder@yahoogroups.com, rahwayflynn maflynn@ wrote: Question for the Quantar Experts:Is it possible to set the quantar up as a base station, conventional, csq, and only unmute when a particular 4 digit DTMF string is received? The radio should revert to muted mode 2 minutes after the last PTT activation.
[Repeater-Builder] OT - Tower Photographs needed
Anyone with a 500+ guyed tower?I am working on a power point presentation for the local OEM. The subject matter is selecting an appropriate LZ for medivac helicopters, IE keep the aircraft away from towers and power lines. What I am looking for is a night day shot from exactly the same perspective (let the ground crew see the guys in the daylight watch them disappear at night)
[Repeater-Builder] Re: (anderson power poles revisited)
I have the factory Anderson Power Products 1309G2 crimper and legit APP parts. I just built a two pole loop connector hung 4# from the loop with no separation. It did separate with a 5# weight. Rebuilt the rig to feed a 2600HZ tone to the left channel of the sound card though a pair of 15 amp connectors, the same source was fed directly to the right. I recorded 60 seconds of audio while holding a jitterbug sander to the connector. The audio looks exactly in both channels when played back with audacity. Anyone have a decent storage scope to repeat the test with? I will ship the power pole connector pigtails to your location if you want to repeat publish the results. Martin --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: Whatever Power Werks sells. Chuck - Original Message - From: MCH m...@... To: Repeater-Builder@yahoogroups.com Sent: Friday, May 08, 2009 4:53 PM Subject: Re: [Repeater-Builder] (anderson power poles revisited) Were the really Power Poles or some knockoff? Some of the 'cheap ones' are just that. I've seen trouble with all, but in every case it was due to not following the proper installation instructions or not using the correct tools. Most of the times it was due to the wrong crimp tool being used. The correct ones are not cheap, but they do work well. When installed correctly, I've never had a problem, and I've been using them for over 25 years (and many in service for that long as well). Joe M. Chuck Kelsey wrote: I've had them unplug easily. Had another that if you wiggled it, it would make and break contact. I solder all mine, taking care not to get solder on the contact itself. I went to them after having trouble with some heavy-duty Molex connectors ( one contact got hot and discolored the shell) and, no, I was not exceeding the current carrying capacity of the connector. As far as using the smaller PowerPoles as a standard to insure multiple operators radios being compatible with each other, I find a connector that can be configured multiple ways (like the PowerPole can) to be a poor choice for that purpose. Chuck WB2EDV - Original Message - From: MCH m...@... To: Repeater-Builder@yahoogroups.com Sent: Friday, May 08, 2009 2:18 PM Subject: Re: [Repeater-Builder] (anderson power poles revisited) Can you (either of you) specify what exactly is coming apart on them? Joe M. Yahoo! Groups Links Yahoo! Groups Links
[Repeater-Builder] Re: A Home Brew 224 MHz Repeater Project. - Part 2
--- In Repeater-Builder@yahoogroups.com, skipp025 skipp...@... wrote: I stopped using small Anderson Power Pole connectors because of all the grief they caused me on the commercial radio side of my life. A lot of people like and use them but I don't trust or use them anymore after a few 10 hour days sourced back to intermittent small power-pole connectors. Re your problem with the Power Pole Connectors: Was the contact itself intermittent or the wire / contact crimp? I have yet to have a prblem with them in DC service, however for signal and data, I generally use Amp CPC series. Martin
[Repeater-Builder] Re: Ham installation quality/non-quality
--- In Repeater-Builder@yahoogroups.com, Nate Duehr n...@... wrote: The above CRAP jobs are often why hams aren't welcome at commercial sites. I hate it when hams do this. Had to vent. There were some newbies along on the trip, and I think they got the point when I stated, If you ever install anything that looks this HamSexy at a commercial radio site, and don't keep the kiddie-show to your back-yard repeater, I'm personally coming to your house to kick your ass. Nate, I have an amateur VHF P25 machine at a public safety site. I have to agree that you need to look the part if you want to retain access to the prime real estate. My entire rack is built to R56, right down to using a 15 ton hydraulic Burndy crimper for the battery and ground lugs. Here's another example: There is a Motorola Nucleus paging transmitter on 152.0075 MHz co-resident with my VHF machine. We took the time to obtain permission install a set of cavities and a Snclair circulator panel on the Nucleus. To make up for the loss from the panel and cavities, The 1/2 hardline feedline was replaced with 7/8 at my expense. Result: no pager interference, and the Nucleus is now clean and happy. End result, Site staff is happy - so happy when I asked if I could install a DSL line, I was given access to the internet, with a static IP on a T3 pipe. Martin
[Repeater-Builder] Re: Taxes On Antennas Feedlines? What Next?
--- In Repeater-Builder@yahoogroups.com, wb0vhb ran...@... wrote: The local assessor is placing a value of around $10,000.00 per antenna on a tower. I haven't seen where size or height makes any difference. Not that I would want to pay the tax, but $10,000 installed sounds about right for a decent commercial antenna and feed line. That being said, does it get depreciated per GAAP? or do they calculate the tax on what it would cost to replace it?
[Repeater-Builder] Re: QUANTAR WIRE LINE BOARD
--- In Repeater-Builder@yahoogroups.com, afa5tp w7...@... wrote: The rept. DOES NOT have a Wire line board installed. Someone told me recently that a Controller could be connected to rept. through the wire line, to give control of Rpt. ID, courtesy beep, linking. etc. There is a vendor with 10+ pf them on eBAY: Search under Motorola Quantar, auction number is 300206657035. Side note: I run a P25 VHF Quantar in amateur service. Rock solid stable machine, even with a VHF nucleus paging transmitter 50 feet away. System has a Sinclair duplexer, with a Sinclair circulator panel.
[Repeater-Builder] OT - Looking for PCI card
Anyone know of a PCI card for a computer that emulates a Tone remote for a MTR or Quantar station?
[Repeater-Builder] Re: Remote receiver suicide control
--- In Repeater-Builder@yahoogroups.com, Paul Kelley N1BUG paul.kelley.n1...@... wrote: The 12v circuit breaker with the shunt trip coil sounds like the most feasible, and besides it's designed exactly for the job. I'm researching that, as I wasn't aware of these devices. Sounds interesting. So far I haven't found a source of suitably rated units, but I haven't had much time to devote to it. Try http://www.paneltronics.com/ They also make really nice rack mount 12 volt distribution panels (bought one for another project) Martin
[Repeater-Builder] Re: Remote receiver suicide control
--- In Repeater-Builder@yahoogroups.com, Paul Kelley N1BUG paul.kelley.n1...@... wrote: and wondering about how to implement a site suicide command where power is disconnected from the entire remote package requiring a trip to the site to bring it back to life. I definitely want some way to kill an entire package at a remote site. Paul, What you want is a circuit breaker with a shunt trip coil. Apply voltage to the coil and the breaker moves to the tripped / off position. They are available in 12, 24, 48VDC, and 120 VAC. There is no static power loss from this (unlike a relay that is electrically held in the on position) If the site has a phone patch, you can use the phone line to accept a DTMF string to operate the power off command. Otherwise, you are stuck with in-band management (DTMF and PL)
[Repeater-Builder] Re: Remote receiver suicide control
--- In Repeater-Builder@yahoogroups.com, Paul Kelley N1BUG paul.kelley.n1...@... wrote: For my application I'm wondering about how to interface the DTMF decoder output to permanently kill power to a site. I'm thinking I want to have it do something like deliberately blow a fuse... but maybe there are better ways to handle it. Paul, Take a look at http://www.broadcastboxes.com/products/DS8lit1.html Each relay can be programmed to respond to 1-4 DTMF digits. I use one to decode the DTMF squelch for the paramedics. A 50A 2 pole relay with a 12V shunt trip coil is available under Airpax/Sensata part number APL11-3-51-503. Martin
[Repeater-Builder] Re: Motorola R56 grounding
--- In Repeater-Builder@yahoogroups.com, Bob M. msf5kg...@... wrote: How often is R56 updated? Does R56 mention somewhere that local regs take precedence, or that NFPA codes supercede R56? Is R56 just a thorough collection of installation guidelines and recommended practices? My copy is dated 2000. Yes, on page Page 1-3 of Motorola 68P81089E50A it states: NOTE: All local and jurisdictional codes and safety standards, wither incidental or superceeding to standards specified in this manual, shall be followed when developing a site, installing equipment, or performing maintenance
[Repeater-Builder] Re: Motorola R56 grounding
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon wb6...@... wrote: However, there are a few recommendations for equipment grounding that violate the National Electrical Code, and would be nixed by a competent electrical inspector. Eric, I have NFPA 70 and the R56 document: Do you have examples of the the above? I would like to do an eyeball compare. With that in mind, a precedence statement needs to go into the tower lease agreement I have in the library. Martin
[Repeater-Builder] Re: (OT) APCO P25 horror stories anyone?
--- In Repeater-Builder@yahoogroups.com, Gareth Bennett \(Ihug\) gare...@... wrote: As P25 is being rolled out worldwide, I have been hearing many stories regarding P25 shortcomings...Such as Vocoder problems in high noise situations, Jitter and Multipath issues from users that have converted from their legacy Analog systems, etc . The repeater issues (If any) are especially interesting for me, and would be very interested in hearing feedback from my colleagues from around the globe. Gareth, I run a mixed mode Quantar. The repeater is current on all software, and the mobiles we use are pretty close to current. P25 recovered audio is nowhere near as legible as 12.5 analog. Fact of life. That being said, the IAFC did a study on P25 technology. They sought input from end users and performed tests under fire ground conditions. The article is at: http://www.iafc.org/displaycommon.cfm?an=1subarticlenbr=719
[Repeater-Builder] Re: Awfully quiet today
--- In Repeater-Builder@yahoogroups.com, Nate Duehr n...@... wrote: Broadband access is not on the Regulated side of telcos in most States, last I checked. No Public Utility groups involved in it. Verizon offers both tarrifed and non-tarrifed ISDN PRI/T1/T3 circuits. The BPU is certainly regulating the tarrifed side of the house. Example: Hospital and handicapped do not pay for directory assistance (NJBPU tariff #2)
[Repeater-Builder] Re: Awfully quiet today
--- In Repeater-Builder@yahoogroups.com, Bob M. msf5kg...@... wrote: Comcrap cable has an e-mail outage that started Saturday morning around 7-8am EDT. I've been told you can still send messages out but you can't check for, or receive messages using your favorite mail program. Their web-based SmartZone e-mail program also is down, so you're screwed either way. My site was shopping for a T3 During the Comcast's salesman's speech, I asked what their SLA terms were. I had to explain SLA and what 5 nines were (less then 5 minutes downtime per year). Comcast could not guarantee anything. What good is 45 Mbs of bandwidth with a CIR of Zero? We are on a Verizon T3, with a second being installed shortly. Verizon is pulling 24 strands of dedicated single mode to an alternate wire center for me. When it *has* to work, it's back to Ma Bell.
[Repeater-Builder] Re: Anyone got a Amp-meter Circuit to Repeater Controller for Telementry Readback?
--- In Repeater-Builder@yahoogroups.com, Gmail - Kevin, Natalia, Stacey Rochelle spar...@... wrote: Hi All, I am in need of a circuit to read amps to my controller. Want to be able to read the current being used at the repeater site as well as the charging current to the batteries. Kevin, Is your rack on a single phase feed? If so, placing a current transformer in the black lead will give you a output current proportional to to the input. Put a resistor across it and use the voltage input to the controller. The downside to this approach is the controller will talk the current and label it volts. Martin
[Repeater-Builder] WTB: NOS / or used working Quantar parts
Looking for the following Motorola modules for a R3 Quantar station. I am band swapping an R4 station to R3 TTE2062/TLN3446 Power Amplifier module TLE5972/TLN3306 Exciter module TRE6282/TLN3314 Receiver / preselector
[Repeater-Builder] SLIGHTLY OT - Contractor Reference
I am looking for a contractor that is licensed in New Jersey to furnish and set 2 CCA treated poles (60 length, 20 foot buried) Will need end anchor. Area is accessible by truck for auger and lift. Will be used for antenna supports.
[Repeater-Builder] Re: Decibel dipole array sweeps
Folks, I have the received plenty of information on dimensions via email. Thanks! Despite the increase in weight, I am considering using 6016-T6 rod for the elements, rather then tubing. I know that rod can be bent without kinking on a tight radius. It also welds a lot easier then thin wall tubing. The other option is to laser or water jet cut the elements out of plate, instead of being bent from round stock. That being said, will the element being square affect the pattern? The total cross section can be engineered to remain the same (circle vs square). The additional rigidity eliminate the need for the insulator between the driven element and the dipole bracket. I do have a concern re using a tin plated copper terminal on a copper center conductor, bolted to an aluminum mast/element with a stainless steel mechanical fastener. Anyone have access to stainless steel lugs that can be compression crimped (with real tooling, not a pair of pliers) that are for a #10 stud and fit the center conductor of the coax? Martin /W2RWJ
[Repeater-Builder] Re: Asntenna Painting
--- In Repeater-Builder@yahoogroups.com, chris Inos chris_i...@... wrote: This summer, I plan to take down my Cellwave Station Master (repeater antenna) for service, maintenance or painting. When in doubt, go right to the source! http://www.rfsworld.com/index.php?p=276l=1listName=applicationnotesindexVal=1 I have the same information as a FAX
[Repeater-Builder] Re: Decibel dipole array sweeps
--- In Repeater-Builder@yahoogroups.com, Kris Kirby k...@... wrote: The results, I would say in practical terms, is that a DB-224 cut for 165MHz isn't a bad thing. You'll experience some uptilt. But matching the antenna to a 50-ohm transmitter is another issue altogether. So the question is, does anyone have an out-of-service DB-224 (hopefully on the ground) that was custom built for amateur service that dimensions can be lifted from from? I have access to 316 stainless tube am willing to take a shot at fabricating replacement elements. Martin
[Repeater-Builder] Re: Decibel dipole array sweeps
--- In Repeater-Builder@yahoogroups.com, Kris Kirby k...@... wrote: On Sun, 22 Mar 2009, rahwayflynn wrote: I have access to 316 stainless tube am willing to take a shot at fabricating replacement elements. Sounds like fun. I think the DB antennas are made from aluminum, however. If you're going to be making a DB antenna clone, it makes more sense to either punch them out of plate or cut them from rod. Any mechanical engineers on the list? :-) -- Kris Kirby, KE4AHR Disinformation Analyst Good point. Aluminum is way easier to work with. The request for dimensions still stands. Martin / W2RWJ
[Repeater-Builder] Mobile Repeater
I was asked by a Technical Rescue group to help them set up a repeater for a mobile command post they are building. The chassis is MCI bus, so it's not going off road. Here's the notes: * The are licensed in commercial UHF. * The bus has both 12V and 24V available from 2 different battery sets * The have access to a commercial style rack with shock mounts * Their hand-held radios are all HT1250, multiple varients. Some of the members have opted to install Motorola Spectra radios in their POV. * The have access to an MTR2000 station and a Kenwood TKR850 from a local car dealership. The can pick either, the other goes to another non-profit. * The antenna is an looks like an RFS BA1012 on a 20' push up pole (they are attempting to obtain a 60' Wilburt mast from a television station) I'm leaning toward the MTR2000 as has better specs and it a high power unit (will not require an external PA). Is there something I am missing in pointing them at the MTR station? Martin
[Repeater-Builder] Re: dumb question 1 - Moto Nuke II 900 MHz
--- In Repeater-Builder@yahoogroups.com, James Delancy ctra...@... wrote: I am thinking about doing this since I have a few Quantar pieces to play with. James, What Quantar pieces-parts do you have? Martin
[Repeater-Builder] Recomendations on T band duplexer
Title says it all. We are putting up a T-band UHF system using a range 4 Motorola Quantar (490-520MHz) with public safety grade infrastructure. System will run mixed-mode (NB/FM and P25) Our VHF UHF systems use Sinclair cavities and IMD panels with great results. However, I need to provide multiple sources. We have an RFP out to Telewave, and RFS via Tessco. Is there another vendor/OEM we should be looking at?
[Repeater-Builder] Re: Recomendations on T band duplexer
Sure, I would appreciate a starting point. --- In Repeater-Builder@yahoogroups.com, Jeff DePolo j...@... wrote: If you need model numbers let me know. --- Jeff WN3A
[Repeater-Builder] Bird 6733 Load Modification
Just finished adding a upgrade to my dummy load. I had picked up a DA-458/URM (Bird 6733) a while back. I mounted it on the wall in the shack with a coax jumper over to the bench. The addition was a solenoid valve and a Klixon 4344 thermostat mounted on the fin. When the fin temperature hit 120 degrees, it opens the valve and runs domestic water through the heat sink. The water is regulated to 30 PSI to avoid damage to the loop in the 6733. 200W for 15 minutes did not even get the 6733 warm enough to activate the klixon. I had to test it by aiming a heat gun at the sensor.
[Repeater-Builder] Re: Syntors at the salvage yard. Drive level to the 45 watt VHF PA?
--- In Repeater-Builder@yahoogroups.com, skipp025 skipp...@... wrote: Yesterday we made it over to a longtime friend's Government Surplus Buyer/Seller/Dealer location/warehouse. He's got a great deal on LaMarche rack mount battery chargers if anyone is seriously looking for one. What voltage / model number?
[Repeater-Builder] Re: OT: Chicken Stick
Bernie, I made 2 out of 3/4 polycarbonate rod. Length is about 16 long. The tip is a 1/4-20 brass bolt with the head cut off and filed to a rounded tip. I tapped the the end of the rod to fit the bolt. The grounding jumper is 4' long made 1/2 braid from Surplus Center with a big muller clamp. I folded the braid in half width-wise and covered with heat shrink tubing. The braid is silver soldered to the bolt. Does any one know where I can obtain a fiberglass chicken stick? I had one at Collins Radio that was about a foot long, 1/4 inch in diameter and would like to obtain the same. It is sure a lot safer probing around the anode of a Klystron with a chicken stick than a metal screwdriver.
[Repeater-Builder] Re: Site Insurance Vendors
Good points in all. If the typical 1m/3m policy is no longer considered adequate, what policy limits do you have on your sites? Especially those on commercial property??
