[Repeater-Builder] Re: UHF Connectors for 1/2 Andrew Superflex
Jim, Thank you VERY much for trying this and letting me know. That will save me a lot of time with this project. I have read an article that uses 1/4 superflex with PL259 and UG176 reducers, and will order some new cables and connectors for the jumpers I need. Superflex is cheaper than RG214 and probably better shielded. Tony --- In Repeater-Builder@yahoogroups.com, Jim Cicirello ka2...@... wrote: Tony, I just took a piece of ½ Superflex that previously had a connector on it and tried to place a PL259 UHF MALE on it. The corrugation on the superflex is larger than the ID of the connector. The connector will go over the center dielectric but the copper corrugation on the superflex is slightly larger than the outside of the UHF Male. The only way I can see it may be possible to join the connector to the cable would be to have a sleeve extend over the superflex and the outside of the UHF connector and then solder the sleeve. This might not be as good of an idea as getting proper connectors that fit the superflex like the N Male and use an adapter to get to UHF. Good Luck JIM KA2AJH From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tony KT9AC Sent: Monday, August 31, 2009 12:51 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] UHF Connectors for 1/2 Andrew Superflex Hello Everyone, I need to make some short jumpers UHF-male to UHF-male and have a length of 1/2 Andrew Superflex on order (actually eBay). Can I use regular silver-teflon PL259's with this cable, similar to how 1/4 superflex is used with the reducer? I can't find UHF Male connectors for 1/2 superflex at Tessco. Thanks, Tony
[Repeater-Builder] Re: Sinclair UHF Receive Antenna Multicoupler Question
Thanks Eric and Walter. I just wanted to see what to expect when I hooked this up, and so far it does only show about 3db gain, which makes sense to overcome the splitter. I was able to adjust it using the couple of tuning screws to center on the 450 band. Has a very sharp tuning slope though since as a test I tried pushing a 460 and 440 signal through it at much reduced levels. Tony --- In Repeater-Builder@yahoogroups.com, kt...@... kt...@... wrote: Good Day everyone, Does anyone have experience or tuning info for a Sinclair UHF Antenna Multicoupler? The model on the rack panel is CR4-302CF and contains a power supply, pre-amp (or preselector) and BNC distribution box (1 to 12 outputs). Looks like 450-470 range. I haven't hooked this up yet, but wanted to see what to expect from it. Can such a device be used directly to receivers, or do you still need to add band-pass cavities between it and the receiver? Thanks for any information! Tony
[Repeater-Builder] Sinclair UHF Receive Antenna Multicoupler Question
Good Day everyone, Does anyone have experience or tuning info for a Sinclair UHF Antenna Multicoupler? The model on the rack panel is CR4-302CF and contains a power supply, pre-amp (or preselector) and BNC distribution box (1 to 12 outputs). Looks like 450-470 range. I haven't hooked this up yet, but wanted to see what to expect from it. Can such a device be used directly to receivers, or do you still need to add band-pass cavities between it and the receiver? Thanks for any information! Tony
[Repeater-Builder] Re: Service Monitor Question
Thanks for the responses so far. I didn't mean to incide a war over this, but the going rate for an IFR 1200S is around $4,000 - the reason I'm looking for a less expensive option. If anyone can speak about Cushman monitors (the 4000) I have a lead on one of those. Otherwise, I'll try my luck going up the ladder. FWIW, I do have shop experience with both IFR and Moto boxes from years ago; just don't have access anymore or deep pockets to play with. Tony --- In Repeater-Builder@yahoogroups.com, Tony KT9AC kt...@... wrote: Hi Everyone, I'm thinking about buying a used service monitor for various projects, and I've come across a few units that look good (from a price point) but I can't find any data on them. 1) Racal Dana 6113G Digital Radio Test Set Service Monitor 2) Cushman CE-4000 3) HP 8924C 4) Ramsey COM3 I realize these are NOT the preferred field service units (I like IFR myself), but for now I just want something usable here and there. Opinions on them are welcome or pros/cons. Thanks! Tony
[Repeater-Builder] Links using Motorola Tone Remote Wireline method over IP
Wondering if anyone has ever linked two Motorola repeaters together using the Tone Remote Wireline methodology (2175 Guard Tone, specific function tones, etc) over IP? Normally these links are run via dedicated microwave links or T1 lines (i.e. on all the time). I'm thinking perhaps of using VoIP or simply media player style audio streams where when one machine is active it sends the command tones and audio to the other one. IRLP or Echolink could be an external option, but why not use the built-in native interface that has worked for many years since the connection to the repeater is fairly simple. This would be for region-to-region linking so voter timings, etc aren't being considered. Thanks, Tony
[Repeater-Builder] Mobile Duplexer for 30W repeater ok?
Just a double-check question. I'm thinking of buying a UHF mobile duplexer to use with my repeater at home. Since I'll only be running 30 watts, any opinions if this is a bad idea? Most of the older style cans are getting higher auction prices, but some mobile packs are pretty reasonable. Thanks, Tony KT9AC
[Repeater-Builder] Re: Mobile Duplexer for 30W repeater ok?
Thanks to everyone so far - it does make sense from the power limits, but if it will work at 443/448 ok or not (out of commercial bandwidth specs). What level of isolation (DB's) should I be looking for in a used duplexer then? Tony --- In Repeater-Builder@yahoogroups.com, kt...@... kt...@... wrote: Just a double-check question. I'm thinking of buying a UHF mobile duplexer to use with my repeater at home. Since I'll only be running 30 watts, any opinions if this is a bad idea? Most of the older style cans are getting higher auction prices, but some mobile packs are pretty reasonable. Thanks, Tony KT9AC
[Repeater-Builder] Re: Need MSR2000 PL Reeds or alternate suggestions
Thanks everyone for their feedback. I have two reeds on order from MDM and will just go with that. Yes, I've told the customer that by 1/1/2013 we'll have to be narrowband, but this is a short-term backup solution so by then we'll figure out something. --- In Repeater-Builder@yahoogroups.com, kt...@... kt...@... wrote: Hello Everyone, I'm in need of two 97.4Hz PL reeds for an MSR2000 using the TLN5073A duplex card (one TX and one RX). I haven't been able to located this particular tone elsewhere so maybe someone here could help. Does anyone think sticking with used reeds is still acceptable for redeployed commercial uses (SKYWARN coordination machine on 452Mhz), or should I look at new Comm-Spec encode/decode boards? Thanks, Tony
[Repeater-Builder] Re: GM300 repeater build ?2
These radios are out of depot service, so Motorola probably won't touch them. Usually you just get a blank 8-pin RJ-45 and short the hangup pin to ground so that PL will decode correctly (I don't remember the exact pin numbers at the moment - sorry). It could be just local mic audio being injected since your likely keying the TX using the accessory connector. If your convinced that its an internal problem, I'd try seperating the logic and RF boards to reset the interconnection between them (could just be oxidation or something acting like a pickup). Tony --- In Repeater-Builder@yahoogroups.com, kb3ccn n3...@... wrote: I just got my cat-200 controller programed up and i notice some oddities with my tx audio. I have a large fan that runs in the cabinet and the radios pick up the noise. Also , when i am transmitting into the repeater , i can tap on the speakers for both the tx and rx radio and you can hear the tapping on the output of the repeater . Best described as the speaker is acting like a microphone and that how the fan noise is getting in Any suggestions ?? Maybe disable the speaker from the jumpers between pin 15 and 16 ?
[Repeater-Builder] Need MSR2000 PL Reeds or alternate suggestions
Hello Everyone, I'm in need of two 97.4Hz PL reeds for an MSR2000 using the TLN5073A duplex card (one TX and one RX). I haven't been able to located this particular tone elsewhere so maybe someone here could help. Does anyone think sticking with used reeds is still acceptable for redeployed commercial uses (SKYWARN coordination machine on 452Mhz), or should I look at new Comm-Spec encode/decode boards? Thanks, Tony
[Repeater-Builder] Re: Analog Repeater to APCO25 conversion?
Thanks Joel (and others). Yes, this might be what I'm looking for. I've passed along this information to my group here in Milwaukee, and already contacted the company and signed up on their email reflector. Tony --- In Repeater-Builder@yahoogroups.com, Huntley, Joel jhunt...@... wrote: You might want to check this new controller out. If/When they pull this one off, it's going to change the game considerably!! http://www.ercsystem.com/s/applications.shtml Pay particular attention to paragraph about 2/3 of the way down... snip? Full featured digital repeater controller: This IPM will provide the ability to convert many existing commercially designed analog repeaters to dual mode units. Support will be provided for the D-STAR, Project 25 and #DMR (Digital Mobile Radio - ETSI Standard) digital modulation formats. snip WebMaster for the Cheshire County DX ARC, Located at: http://www.ccdx.org See Ya, Joel wa1...@... or WA1ZYX K1XX DxCluster Node (Amateur Radio) http://www.ccdx.org/zedyx/home.htm http://home.webryders.net/surry 443.800 141.3 Keene, NH --- 449.450 123.0 Saddleback Mtn 449.875 123.0 Cannon Mtn 447.425 141.3 Temple Mtn 53.730 141.3 Keene WinErr: 079 Mouse not found -- A mouse driver has not been installed. Please click the left mouse button to continue
[Repeater-Builder] Analog Repeater to APCO25 conversion?
I'm wondering if anyone has thought about or attempted to modify an analog repeater to regenerate P25 signalling (C4FM)? I know the easy way would be to buy a Quantar or similar box, or tying two mobiles back-to-back for flat-audio passthru. I want to find a way to recover the phase-modulated signalling, passing it to a homebrew logic board. This board would stream the bits into memory and if the NAC is valid, then regenerate the similiar stream out the transmitter. You could also store-and-forward this audio to other systems or for playback. So I either need to buy a manual to read the theory or ask here if anyone has tinkered with this. Maybe I'm missing something here, but isn't phase-modulation not quite the same as our VCO-modulated direct FM? P25 as I understand it, either shifts the phase 600Hz or 1800Hz plus or minus, and based on this generates a two-bit symbol at 9600 baud. So please don't flame and say Go buy a Quantar because if this could be done, many surplus systems could be modified for new digital modes. Any help with schematic scans or what part numbers for Astro/Quantar style unit manuals would be welcomed. Thanks! Tony
[Repeater-Builder] Re: Analog Repeater to APCO25 conversion?
Thanks Gentlemen! I was hoping that pure-FM could stay in the picture somehow. I'll do some more research (other than Wikipedia and Daniels' P25 training guide) to see if this can be done. I'm not too worried about the logic part of it, only if it could be attempted (APCO Phase I equipment has to be dual-mode). I've also seen Quantar control and wireline boards on eBay for pretty cheap, and if one of those could be interfaced to say a MSR2K or MSF5K that might get things started.
[Repeater-Builder] Re: Astron Rack Power Supplies or Motorola for new project
Thanks Bill for the reply. Just to be clear to everyone, I'm not going to swap-out the MSF5000 PS since it works great. I was thinking about the MSR if I consolidated it into to a different cabinet with other equipment. --- In Repeater-Builder@yahoogroups.com, William Becks wbe...@... wrote: Tony, I am not sure about the MSF-5000 but the MSR-2000 requires well filtered and regulated 9 and 12 volt supplies for the RF deck and control shelf while the PA has its own high current 14 volt supply. Some MSF-5000 models require 24-28 volts for the PA depending on power output. You would be hard pressed to fulfill the various supply voltages with the Astron. The cabinet and frame of both stations are similar and are designed for stacking through the use of the two auxiliary bolts that fasten the bottom plate of one cabinet to the top plate of the other. Bill, WA8WG - Original Message - From: kt...@... To: Repeater-Builder@yahoogroups.com Sent: Wednesday, April 29, 2009 1:31 PM Subject: [Repeater-Builder] Astron Rack Power Supplies or Motorola for new project Hi everyone, I just picked up a MSR2000 and MSF5000 recently. I'm wondering what the group thinks about using an Astron PS in place of the Moto back-breaker (sorry, mine still hurts) that came with these units? I've never seen a Moto fail, but for consolidating these two into a taller cabinet, would it make sense? I know it depends on the current consumption, but for a 40W station and a remote receiver application I'd hate to add 80lbs or more. What about how old is too old for a Moto PS (specifically the MSR2K unit)? Thanks, Tony Yahoo! Groups Links
[Repeater-Builder] Astron Rack Power Supplies or Motorola for new project
Hi everyone, I just picked up a MSR2000 and MSF5000 recently. I'm wondering what the group thinks about using an Astron PS in place of the Moto back-breaker (sorry, mine still hurts) that came with these units? I've never seen a Moto fail, but for consolidating these two into a taller cabinet, would it make sense? I know it depends on the current consumption, but for a 40W station and a remote receiver application I'd hate to add 80lbs or more. What about how old is too old for a Moto PS (specifically the MSR2K unit)? Thanks, Tony
