[Repeater-Builder] Com spec ID-1
Has any one used a Com Spec ID-1 on a GR300 and used the third port on the R.I.C.K. box.. I want to have the GR300 have an Ider.. Thanks! Paul R. Dumdie Jr. 73 W9DWP/R IRLP-NODE-4455 443.025/2A 145.270/1B/1Z/NAC-293 ARC-Radio-8 KCARES HERD546 EX WB9QWZ WQGG738 AAR5CU/T www.riflesandradios.com
[Repeater-Builder] Coax Interconnect (Inside Repeater)
I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. After contacting Kenwood and getting quoted some crack prices I figured I'd see if anyone has anything laying around or has any ideas on here. I've got the BNC Connector and the existing cable that goes from the BNC to the RX Board removed from the repeater and sitting on my desk. I also have an N Female connector that I want to put in line. The existing coax interconnect is not long enough to cut the BNC off of and solder the N on and have it be sufficient length to reach both the board and the back of the repeater. The cable is the super small sized coax terminated one one end with the little micro RCA looking plug and the Connector is on the other end. If I remember correctly it looks exactly like the coax interconnects found in the Mitrek, Syntor and all them. I'm thinking a scrap Mitrek or Syntor would work fine (any thoughts on just ganking a cable from another radio?) Anyone know where I can purchase a new cable terminated with that micro plug from (other then Kenwood, because I'm not about to pay $34 for two feet of cable) Also, I've been thinking about taking some small copper pipe and routing it inside the repeater from the BNC opening in the rear to the RX board to run the coax inside of for a little better shielding against the TX. Any thoughts/comments/suggestions on that idea? Thanks guys! Alex N4TIA
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
At 08:42 AM 1/21/2009, Alexander N Tubonjic wrote: I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. My first and only question is why? Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
[Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
Mainly because the BNC connectors seem flimsy in my opinion (I've had two break on two separate HT's over the past few years) and from reading up whats posted on the net everyone seems to agree that steering clear of PL-259 and BNC connectors in repeaters is a good idea. My first and only question is why? Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
Re: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
You want to steer away from junk connectors, and there are a lot of them out there. BNC's get used with excellent results on all kinds of commercial applications. Use quality, name-brand connectors. Hamfest specials are usually cheap overseas junk. Chuck WB2EDV - Original Message - From: Alexander N Tubonjic kg4...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, January 21, 2009 12:15 PM Subject: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater) Mainly because the BNC connectors seem flimsy in my opinion (I've had two break on two separate HT's over the past few years) and from reading up whats posted on the net everyone seems to agree that steering clear of PL-259 and BNC connectors in repeaters is a good idea.
RE: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
I agree. In my military days, we used a lot of BNC connectors into the 400 MHz range with no problems. Stick with Amphenol or a another good mil-spec brand and you'll be fine. You get what you pay for. 73, Mike WM4B From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Chuck Kelsey Sent: Wednesday, January 21, 2009 12:21 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater) You want to steer away from junk connectors, and there are a lot of them out there. BNC's get used with excellent results on all kinds of commercial applications. Use quality, name-brand connectors. Hamfest specials are usually cheap overseas junk. Chuck WB2EDV - Original Message - From: Alexander N Tubonjic kg4...@yahoo.com mailto:kg4ogn%40yahoo.com To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Sent: Wednesday, January 21, 2009 12:15 PM Subject: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater) Mainly because the BNC connectors seem flimsy in my opinion (I've had two break on two separate HT's over the past few years) and from reading up whats posted on the net everyone seems to agree that steering clear of PL-259 and BNC connectors in repeaters is a good idea. image001.jpgimage002.jpg
Re: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
I like Amphenol, Kings and RF Industries. Same problem with coax. If you go with something not Mil-Spec (with an actual Mil-Spec number), good luck. Again, there's lots of junk out there. Chuck WB2EDV - Original Message - From: Mike Besemer (WM4B) To: Repeater-Builder@yahoogroups.com Sent: Wednesday, January 21, 2009 12:44 PM Subject: RE: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater) I agree. In my military days, we used a lot of BNC connectors into the 400 MHz range with no problems. Stick with Amphenol or a another good mil-spec brand and you'll be fine. You get what you pay for. 73, Mike WM4B
Re: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
Hi Chuck and the group -- Thanks for this input -- It has been well known for years that the cheapy connectors that most hams purchase won't cut it on repeaters. There are only a couple of manufacturers that I will purchase or that we will purchase in the shop. AMPHENOL silver plated/teflon being one type. As the BNC connectors, well there is many schools of thought about this but good connectors work fine. Heck TX/RX uses them all the time without issue on their duplexers. I also question why we keep hammering on UHF when, we use good connectors, they are still getting a bad rap? UHF has strength and as long as they are treated well they serve well. Where N connectors shine is in wet environments, and where constant impedance is a must. As to coax, RG-8 (214, 213) is not a requirement, use teflon RG-142B or RG-223! Both are very good candidates for repeater and duplexer use. Constant impedance, low loss, good/excellent shield - less leakage (or crosstalk), and easy to work with. Certainly, a plus. Thanks group -- for letting me comment -- Rick NU7Z On Wed, Jan 21, 2009 at 9:21 AM, Chuck Kelsey wb2...@roadrunner.com wrote: You want to steer away from junk connectors, and there are a lot of them out there. BNC's get used with excellent results on all kinds of commercial applications. Use quality, name-brand connectors. Hamfest specials are usually cheap overseas junk. Chuck WB2EDV - Original Message - From: Alexander N Tubonjic kg4...@yahoo.com kg4ogn%40yahoo.com To: Repeater-Builder@yahoogroups.com Repeater-Builder%40yahoogroups.com Sent: Wednesday, January 21, 2009 12:15 PM Subject: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater) Mainly because the BNC connectors seem flimsy in my opinion (I've had two break on two separate HT's over the past few years) and from reading up whats posted on the net everyone seems to agree that steering clear of PL-259 and BNC connectors in repeaters is a good idea.
Re: [Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
At 09:27 AM 1/21/2009, Eric Vincent wrote: Better matching, less loss, handle power, robust and perfect for RG-214. ---Better matching? Both N and BNC are constant impedance. Power? Not a concern for receivers. RG-214? BNCs work quite nicely with it. Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
Alex, I have had over 30 of these repeaters in use and never ran into a problem using the BNC. I would leave well enough alone if it were me. If you do this you wont take care of the issue you may be thinking your going to fix by doing so. I have a 5 ch system UHF LTR on Cheyenne Mt just above Norad in Colorado Springs. Let's just say the noise floor is very high. Heck you have to wear an RF suite at spots on the hill so that will tell you what is going on. My point is, i am using the BNC on the system and have no problems with them at all. What is the reasoning for swapping the BNC for the N Female connector and what do you think your going to gain by doing so. There is a reason why Kenwood engineers made the repeater with the BNC and not a N Connector. Mike Mullarkey K7PFJ -- Original message -- From: Alexander N Tubonjic kg4...@yahoo.com I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. After contacting Kenwood and getting quoted some crack prices I figured I'd see if anyone has anything laying around or has any ideas on here. I've got the BNC Connector and the existing cable that goes from the BNC to the RX Board removed from the repeater and sitting on my desk. I also have an N Female connector that I want to put in line. The existing coax interconnect is not long enough to cut the BNC off of and solder the N on and have it be sufficient length to reach both the board and the back of the repeater. The cable is the super small sized coax terminated one one end with the little micro RCA looking plug and the Connector is on the other end. If I remember correctly it looks exactly like the coax interconnects found in the Mitrek, Syntor and all them. I'm thinking a scrap Mitrek or Syntor would work fine (any thoughts on just ganking a cable from another radio?) Anyone know where I can purchase a new cable terminated with that micro plug from (other then Kenwood, because I'm not about to pay $34 for two feet of cable) Also, I've been thinking about taking some small copper pipe and routing it inside the repeater from the BNC opening in the rear to the RX board to run the coax inside of for a little better shielding against the TX. Any thoughts/comments/suggestions on that idea? Thanks guys! Alex N4TIA
[Repeater-Builder] Re: Coax Interconnect (Inside Repeater)
I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. Why..? It's a horrible idea and a real potential for trouble. Would there be some major advantage (we seem to be overlooking) over the factory installed rx BNC connector? s.
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
Alexander N Tubonjic wrote: I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. After contacting Kenwood and getting quoted some crack prices I figured I'd see if anyone has anything laying around or has any ideas on here. Why? electrically, the BNC connectors and the N connectors are the same thing. Don't believe me? Try plugging them together.. Even though they won't latch together, electrically, they fit together perfectly, and can be used this way in an emergency if you're at a tower site and find you don't have the proper connector.. What am I missing? Mike
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
Mike, the BNC connector was designed for quick insertion / disconnect and works very well in most applications. However the Type N connector is much more robust and would be my choice for critical connections such as a Duplexer or an Antenna etc We use them all the time in the Telephone business for DS-3 connections. Here is some history on the BNC connector... http://en.wikipedia.org/wiki/BNC_connector 73 John VE3AMZ - Original Message - From: Mike Pugh mikep...@mikepugh.net To: Repeater-Builder@yahoogroups.com Sent: Wednesday, January 21, 2009 3:55 PM Subject: Re: [Repeater-Builder] Coax Interconnect (Inside Repeater) Alexander N Tubonjic wrote: I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. After contacting Kenwood and getting quoted some crack prices I figured I'd see if anyone has anything laying around or has any ideas on here. Why? electrically, the BNC connectors and the N connectors are the same thing. Don't believe me? Try plugging them together.. Even though they won't latch together, electrically, they fit together perfectly, and can be used this way in an emergency if you're at a tower site and find you don't have the proper connector.. What am I missing? Mike Yahoo! Groups Links
[Repeater-Builder] 900 MHz WISP on repeater tower?
I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? Thanks! Paul N1BUG
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
John J. Riddell wrote: Mike, the BNC connector was designed for quick insertion / disconnect and works very well in most applications. I keep forgetting why I don't post here very often. You're absolutely correct John. I never said that they were permanent substitutes for each other, I said they would work as a temporary substitute for each other in the event you were at a tower site and did not have the correct connector. If you have a choice of using the wrong connector and getting the station back on the air, or leaving it off and driving back to town to get the right connector, then they will mate for each other till you can get the right connector... Mike
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
Find out what gear they are using. Make sure it's FCC certified. If you have a spectrum analyzer, or have access to one, have them fire up the gear and make sure it doesn't have any spurious spikes within the 440 and 2m ham band. -Mike On Wed, Jan 21, 2009 at 1:34 PM, Paul N1BUG paul_n1...@verizon.net wrote: I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? Thanks! Paul N1BUG
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
And scratch out the chance of ever making friends with any other amateur in the area that has deployed, or is thinking of deploying, a 902 MHz ham repeater... The 900 MHz ISM crap makes the 902 Amateur band in a lot of the country almost unusable... We actually had a WISP removed from our site due to the noise floor they stirred up with their certified Motorola gear... Right of first refusal is rather helpful in these cases. 73s, AJ, K6LOR On Wed, Jan 21, 2009 at 2:37 PM, Mike Lyon mike.l...@gmail.com wrote: Find out what gear they are using. Make sure it's FCC certified. If you have a spectrum analyzer, or have access to one, have them fire up the gear and make sure it doesn't have any spurious spikes within the 440 and 2m ham band. -Mike On Wed, Jan 21, 2009 at 1:34 PM, Paul N1BUG paul_n1...@verizon.netwrote: I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? Thanks! Paul N1BUG
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
I have a remote receiver site at a 900 mHz distribution point where the 2.4 gHz baseband is distributed down on 900 mHz and the noise is really bad. I can't copy my repeater to test the remote receiver till I walk about 200 ft from the tower where the 900 mHz stuff is located. I have a GE Mastr II remote receiver with the squelch set as tight as it will go to squelch out the digital noise. During the squelch tail before the PL squelch closes it sounds just like a packet station in the receiver. We are looking for another site for that remote, as the site with the 900 mHz stuff is unusable. 73 - Jim W5ZIT --- On Wed, 1/21/09, Paul N1BUG paul_n1...@verizon.net wrote: From: Paul N1BUG paul_n1...@verizon.net Subject: [Repeater-Builder] 900 MHz WISP on repeater tower? To: Repeater-Builder@yahoogroups.com Date: Wednesday, January 21, 2009, 3:34 PM I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? Thanks! Paul N1BUG
RE: [Repeater-Builder] Coax Interconnect (Inside Repeater)
-Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Mike Pugh Sent: Wednesday, January 21, 2009 4:39 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Coax Interconnect (Inside Repeater) John J. Riddell wrote: Mike, the BNC connector was designed for quick insertion / disconnect and works very well in most applications. I keep forgetting why I don't post here very often. You're absolutely correct John. I never said that they were permanent substitutes for each other, I said they would work as a temporary substitute for each other in the event you were at a tower site and did not have the correct connector. If you have a choice of using the wrong connector and getting the station back on the air, or leaving it off and driving back to town to get the right connector, then they will mate for each other till you can get the right connector... Mike One caveat: While a type N male will plug into a BNC female, the N center pin is a little larger than that of a BNC. Doing this will expand the sleeves in the female BNC and when you go to put a BNC male back in (with the smaller pin) it may not make good contact again. Sometimes you can get away with it and sometimes you permanently damage the BNC female. 73 Gary K4FMX
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
The rule of thumb we used on the military aircraft RF cabling was that when we were using a larger sized cable like RG-214 we always used a type N, while if we were using a smaller cable like RG-142 we used a BNC. I worked on reconnaissance aircraft for the Air Force and Navy. For video cabling we always used BNC and the wideband tape recorders were always delivered with BNC connectors. 73 - Jim W5ZIT --- On Wed, 1/21/09, Mike Pugh mikep...@mikepugh.net wrote: From: Mike Pugh mikep...@mikepugh.net Subject: Re: [Repeater-Builder] Coax Interconnect (Inside Repeater) To: Repeater-Builder@yahoogroups.com Date: Wednesday, January 21, 2009, 2:55 PM Alexander N Tubonjic wrote: I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. After contacting Kenwood and getting quoted some crack prices I figured I'd see if anyone has anything laying around or has any ideas on here. Why? electrically, the BNC connectors and the N connectors are the same thing. Don't believe me? Try plugging them together.. Even though they won't latch together, electrically, they fit together perfectly, and can be used this way in an emergency if you're at a tower site and find you don't have the proper connector.. What am I missing? Mike
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
On Wed, 21 Jan 2009, Jim Brown wrote: I have a remote receiver site at a 900 mHz distribution point where the 2.4 gHz baseband is distributed down on 900 mHz and the noise is really bad.? I can't copy my repeater to test the remote receiver till I walk about 200 ft from the tower where the 900 mHz stuff is located. I have a GE Mastr II remote receiver with the squelch set as tight as it will go to squelch out the digital noise.? During the squelch tail before the PL squelch closes it sounds just like a packet station in the receiver. We are looking for another site for that remote, as the site with the 900 mHz stuff is unusable. So much for shall not cause interference. After seeing a comment fly by on a list about protecting some portion of the 2.4GHz band from noise for amateur satellite use, I realized proactive protection from hams is pointless. The reason is that we can protect the band from ourselves, but not from Part 15 devices without FCC litigation. And that would make us exceptionally bad neighbors. Maybe a line needs to be drawn. Some services may coexist peacefully. OFDM and weak signal, perhaps not. -- Kris Kirby, KE4AHR k...@catonic.us But remember, with no superpowers comes no responsibility. --rly
Re: [Repeater-Builder] Bendix King EMH5990 for repeater?
See my reply over on the BK_Radio list George, KA3HSW / WQGJ413 - Original Message - From: kd6pgi jacobsp...@gorge.net To: Repeater-Builder@yahoogroups.com Sent: Tuesday, January 20, 2009 2:17 PM Subject: [Repeater-Builder] Bendix King EMH5990 for repeater? Anyone ever used a pair of Bendix King EMH5990s for a repeater? Would be interested in finding out how, the wiring diagram for the accessory port on the back, etc. Seems that it should work well since the power can be turned down to 50% and it has a decent heat sink...add a fan and it should be set.
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
and may I ask why? is there a problem with the factory set up? thanks - Original Message - From: Alexander N Tubonjic To: Repeater-Builder@yahoogroups.com Sent: Wednesday, January 21, 2009 11:42 AM Subject: [Repeater-Builder] Coax Interconnect (Inside Repeater) I am wanting to swap out the BNC receiver connector to an N connector on my Kenwood TKR-750 2 meter repeater. After contacting Kenwood and getting quoted some crack prices I figured I'd see if anyone has anything laying around or has any ideas on here. I've got the BNC Connector and the existing cable that goes from the BNC to the RX Board removed from the repeater and sitting on my desk. I also have an N Female connector that I want to put in line. The existing coax interconnect is not long enough to cut the BNC off of and solder the N on and have it be sufficient length to reach both the board and the back of the repeater. The cable is the super small sized coax terminated one one end with the little micro RCA looking plug and the Connector is on the other end. If I remember correctly it looks exactly like the coax interconnects found in the Mitrek, Syntor and all them. I'm thinking a scrap Mitrek or Syntor would work fine (any thoughts on just ganking a cable from another radio?) Anyone know where I can purchase a new cable terminated with that micro plug from (other then Kenwood, because I'm not about to pay $34 for two feet of cable) Also, I've been thinking about taking some small copper pipe and routing it inside the repeater from the BNC opening in the rear to the RX board to run the coax inside of for a little better shielding against the TX. Any thoughts/comments/suggestions on that idea? Thanks guys! Alex N4TIA
RE: [Repeater-Builder] 900 MHz WISP on repeater tower?
Paul, Like Mike had said find out what gear is going to be used. Make sure it is type accepted and get the frequencies for RX TX if it is duplex and if it is simplex. Make sure they use a high quality band pass filter after the transmitter. Assuming that the wireless internet company wanting to provide service for your local area around the tower. You are sitting in a good seat now since they most likely will give you a broadband connection and can do with as you see fit, site security, IRLP etc. Good Luck, Colorado Telecom, L.L.C Mike Mullarkey 6886 Sage Ave Firestone, Co 80504 303-954-9695 Home 303-954-9693 Home Office Fax 303-718-8052 Cellular _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Lyon Sent: Wednesday, January 21, 2009 2:38 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] 900 MHz WISP on repeater tower? Find out what gear they are using. Make sure it's FCC certified. If you have a spectrum analyzer, or have access to one, have them fire up the gear and make sure it doesn't have any spurious spikes within the 440 and 2m ham band. -Mike On Wed, Jan 21, 2009 at 1:34 PM, Paul N1BUG paul_n1...@verizon. mailto:paul_n1...@verizon.net net wrote: I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? Thanks! Paul N1BUG
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
Paul N1BUG wrote: I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? This doesn't exactly apply, but I share a site with some 5.6 Ghz wireless stuff. Apparently, this particular installation's equipment seems to have an IF somewhere around 400 Mhz. We have a packup antenna located somewhere around 5 ft away from their antennas. When we put above 25W of UHF RF on this antenna, we swamp the wireless stuff. Just put this in the back of your mind just in case. Mike KA4MKG
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
I would include a clause that requires the wireless internet company to be responsible to mitigate any interference to the existing users of the tower. Nice and simple. Joe Mike Pugh wrote: Paul N1BUG wrote: I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice?
RE: [Repeater-Builder] Site Shelter
Hi Mike, It's probably useless for me to ask since we're not near each other but what are the details and how much are you asking for the shelter? Gary R. San Diego, CA. _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Mullarkey Sent: Wednesday, January 21, 2009 4:34 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Site Shelter If anybody is in need of a 4 year old 12x18 Andrew communications shelter fully outfitted AC, Surge Panel, Halo etc please contact me off the list. It is 4year old and the site must be clear by the end of the month. Mike Colorado Telecom, L.L.C Mike Mullarkey 6886 Sage Ave Firestone, Co 80504 303-954-9695 Home 303-954-9693 Home Office Fax 303-718-8052 Cellular
RE: [Repeater-Builder] Site Shelter
Whoops! Forgot to change the address. Sorry group. Gary _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Sent: Wednesday, January 21, 2009 5:10 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Site Shelter Hi Mike, It's probably useless for me to ask since we're not near each other but what are the details and how much are you asking for the shelter? Gary R. San Diego, CA. _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Mullarkey Sent: Wednesday, January 21, 2009 4:34 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Site Shelter If anybody is in need of a 4 year old 12x18 Andrew communications shelter fully outfitted AC, Surge Panel, Halo etc please contact me off the list. It is 4year old and the site must be clear by the end of the month. Mike Colorado Telecom, L.L.C Mike Mullarkey 6886 Sage Ave Firestone, Co 80504 303-954-9695 Home 303-954-9693 Home Office Fax 303-718-8052 Cellular
[Repeater-Builder] Re: 900 MHz WISP on repeater tower?
An ISP installed some Motorola Canopy equipment with the antennas about 20 ft. horizontally from our 2M receive antenna. The noise floor went up at least 10db. In this case, I had the option of moving our antenna so it is now about 80 ft. horizontally away. No noise at all from their equipment now. I believe that the bulk of the noise is digital processing junk, not related to their transmitter(s). (But could easily be proven wrong on that one...) It's pretty broadband in the VHF region, but I have not heard any problem at all with a 70cm receiver using an antenna in the same position that the 2M antenna was mounted. Laryn K8TVZ
Re: [Repeater-Builder] 900 MHz WISP on repeater tower?
Paul N1BUG wrote: I could use a little help here. I have a repeater tower with 2 meter and 440 repeater on it. I have been contacted by a wireless internet service provider about putting some 900 MHz stuff on my tower. The deal they are offering is attractive but I'm wondering if there would be interference issues between their stuff and my repeaters. I'm going to be setting up a meeting to discuss technical aspects of the proposed system, but I have no experience or knowledge in this area and am not sure what questions I should be asking them. Any suggestions or advice? Ethernet cabling should be of the shielded type and bonded at one end to earth. If they are putting up a 900 MHz access point, will it be sectorized? If yes, how many sectors (how many transmitters)? What frequencies and bandwidths on 900 (20 MHz) (10 MHz) (5 MHz) ? How is the input bandwidth being delivered? Fiber, DSL, wireless link on another band (2.4 GHz) (5.3 GHz) (5.8 GHz)? What kind of antenna system... 3 - 120 degree sectors, 1 - omni? What kind of equipment (Alveron) (Motorola) (home-made) (don't laugh, I build my own) Answering the above will give me an idea of what you can expect. Kevin Custer
Re: [Repeater-Builder] Coax Interconnect (Inside Repeater)
At 1/21/2009 10:10, you wrote: There is a reason why Kenwood engineers made the repeater with the BNC and not a N Connector. Cost. BTW you can use RG-214 with BNCs, but I wouldn't hang 6 ft. of RG-214 perpendicularly off of one. I use RG-223, try to keep the lengths down to 3 ft. if it's for a 440 system. Bob NO6B
RE: [Repeater-Builder] Coax Interconnect (Inside Repeater)
At 1/21/2009 15:13, you wrote: One caveat: While a type N male will plug into a BNC female, the N center pin is a little larger than that of a BNC. Doing this will expand the sleeves in the female BNC and when you go to put a BNC male back in (with the smaller pin) it may not make good contact again. Sometimes you can get away with it and sometimes you permanently damage the BNC female. Also don't forget that there are 75 ohm versions of the N, BNC SMA out there too. All barely distinguishable from each other yet incompatible, of course. Bob NO6B
