Re: [Repeater-Builder] Re: Side mount to wooden utility pole?
Back in the day I mounted a Ringo to the botom of a pole using your standard TV antenna mounting brackets bent so they got the antenna the most distance off the pole which was 4 - 5 and that worked fine. On Tue, Jan 26, 2010 at 7:02 PM, Barry ate...@hotmail.com wrote: A couple of bucks worth of 1 angle and make a sort of L shape , two coach srews into the pole and one through the leg of the L as it provides the brace into the pole to stabilse it all then mount the arial into the end at what ever distance you think reasonable ( more is better) unless soaked the pole will be near rf invizable Good luck -- To: Repeater-Builder@yahoogroups.com From: tallins...@yahoo.com Date: Wed, 27 Jan 2010 01:52:00 + Subject: [Repeater-Builder] Re: Side mount to wooden utility pole? Side Note: I have an AutoCAD drawing of a home brew version if there is a person handy with a welder Unfortunately I'm not (too much goofing off in auto shop), but I sure intend to find someone. Geeessshhh! $5.00 worth of material at a scrap metal shop and $25.00 plus a case of beer (the good stuff) for the welder and you're good to go. Whatever Laird execs. are smoking, I'll have some! Tom --- In Repeater-Builder@yahoogroups.com, rahwayflynn mafl...@... wrote: 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.grantham@ 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 -- Browse profiles for FREE View photos of singles in your area!http://clk.atdmt.com/NMN/go/150855801/direct/01/
[Repeater-Builder] Re: Side mount to wooden utility pole?
--- In Repeater-Builder@yahoogroups.com, DCFluX dcf...@... wrote: Back in the day I mounted a Ringo to the botom of a pole So THAT'S why they don't work so well... Laryn K8TVZ
[Repeater-Builder] Duplexer for TKR-720
Anybody have any experience with the duplexers in this repeater? (I have the repeater, and was wondering if it worth trying to find one, or go elsewhere). Will be running the repeater at 20w, with a 4.55mhz split. I've seen the '$99' specials on e-bay.. would they be a decent alternative to the OEM duplexer? (I know they aren't as good as a full-sized duplexer). This is for a portable repeater - inside a Pelican box for storage and transport, so trying to reduce the required space as much as possible. Thanks, Tim
[Repeater-Builder] Re: Duplexer for TKR-720
Re: Duplexer for TKR-720 tahrens301 tahr...@... wrote: Anybody have any experience with the duplexers in this repeater? (I have the repeater, and was wondering if it worth trying to find one, or go elsewhere). The VHF flat pack duplexers work fine for what they are. If you understand they will provide basic decent repeater performance if you operate them as designed. Will be running the repeater at 20w, with a 4.55mhz split. The wider vhf commercial split should make it easier to find a practical flat-pack. I have noticed they tend to perform quite well at about 15 watts, when you rise up above about 15 watts the desense can start to get out of hand. Inter related to the smaller Flat-Pack Duplexer you're probably talking about... size does matter. There's a really small unit similar in size to the typical UHF flat pack and it's a basic rude minimal performer when compared to the noticeably larger flat pack that probably won't fit inside the repeaters bottom case area. If you really want to step up to a next better level... some of the used rack mount notch-pass duplexer units offered on Ebay are a lot better. I've seen the '$99' specials on e-bay.. would they be a decent alternative to the OEM duplexer? (I know they aren't as good as a full-sized duplexer). No one has reported good or bad regarding the Asia Made Clone units you're probably talking about seeing listed on Ebay. I've always done better by searching Ebay for used higher Q units. This is for a portable repeater - inside a Pelican box for storage and transport, so trying to reduce the required space as much as possible. Thanks, Tim That makes a difference... you can remove the ears from one of the rack mount units. If you can fit it in the fly-away case then you'd be way ahead of the game. If you're patient on Ebay you can sometimes catch a deal on this type of duplexer... Ebay Item Number: 110486323682 I've caught these units used from prices of $50 up toward $150 is a pretty good deal. back later... s.
Re: [Repeater-Builder] Re: Side mount to wooden utility pole?
A great leader once said Ringo, Negative. and it was gotten rid of in favor of a single Station Master clone and a set of WP-639 duplexers, by golly he was right. On Wed, Jan 27, 2010 at 2:56 PM, larynl2 lar...@hotmail.com wrote: --- In Repeater-Builder@yahoogroups.com, DCFluX dcf...@... wrote: Back in the day I mounted a Ringo to the botom of a pole So THAT'S why they don't work so well... Laryn K8TVZ Yahoo! Groups Links
RE: [Repeater-Builder] Re: Duplexer for TKR-720
If you're patient on Ebay you can sometimes catch a deal on this type of duplexer... Ebay Item Number: 110486323682 I've caught these units used from prices of $50 up toward $150 is a pretty good deal. back later... s. An oldie but a goodie, Sinclair R2B12 for wide split (and it's a low-split one too if you can find a ham use for it): eBay 230420420176 Can't beat the price...and 11 of them available. I have a 150 MHz split one of these laying around if anyone has a need (might be on a taxicab pair). --- Jeff WN3A
[Repeater-Builder] Motorola GR300 troubles
I'm helping a new repeater owner get a GR300 repeater working properly. It uses the gm300 radios. The transmit radio shows in software as an M34GMC09C3 radio, (UHF, 25 watt, narrow band) but the PA is marked M44GRC90C2AA (Not sure of what this is). It looks like at 25 watt PA was replaced with a 45 watt PA, but I don't know what radio the 45 watt PA came from. Anyway, it is suffering from intermittent desense and the crackles. Substituting the transmitter with another one of the same power level fixes the problem, so it looks like it is definitely in the transmitter. Sounds like a bad solder joint in the PA because the trouble starts to go away as the transmit radio heats up. It's now set to 20 watts output. I would like to take the PA apart, but I'd like to know what I'm tearing into. Can anyone ID this PA M44GRC90C2AA? It doesn't fit the GM300 scheme of decoding. 73, Joe, K1ike
[Repeater-Builder] Re: Duplexer for TKR-720
It's a great deal Jeff... Just everyone else reading this keep in mind these are wide split duplexers so you're not easily, if at all going to get them to perform with a 600KHz most of the USA standardized two-meter repeater offset. s. Jeff DePolo j...@... wrote: An oldie but a goodie, Sinclair R2B12 for wide split (and it's a low-split one too if you can find a ham use for it): eBay 230420420176 Can't beat the price...and 11 of them available. I have a 150 MHz split one of these laying around if anyone has a need (might be on a taxicab pair). --- Jeff WN3A If you're patient on Ebay you can sometimes catch a deal on this type of duplexer... Ebay Item Number: 110486323682 I've caught these units used from prices of $50 up toward $150 is a pretty good deal. back later... s.
[Repeater-Builder] Re: Motorola GR300 troubles
PA M44GRC90C2AA is from the R1225 Repeater transciever chassis. They are 45 watts but overheat from lack of cooling. This should be the heatsink with the longer fins..perfered. Look for very poor crystalized solder joints due to overheating. --- In Repeater-Builder@yahoogroups.com, Joe k1ike_m...@... wrote: I'm helping a new repeater owner get a GR300 repeater working properly. It uses the gm300 radios. The transmit radio shows in software as an M34GMC09C3 radio, (UHF, 25 watt, narrow band) but the PA is marked M44GRC90C2AA (Not sure of what this is). It looks like at 25 watt PA was replaced with a 45 watt PA, but I don't know what radio the 45 watt PA came from. Anyway, it is suffering from intermittent desense and the crackles. Substituting the transmitter with another one of the same power level fixes the problem, so it looks like it is definitely in the transmitter. Sounds like a bad solder joint in the PA because the trouble starts to go away as the transmit radio heats up. It's now set to 20 watts output. I would like to take the PA apart, but I'd like to know what I'm tearing into. Can anyone ID this PA M44GRC90C2AA? It doesn't fit the GM300 scheme of decoding. 73, Joe, K1ike
[Repeater-Builder] Zetron Model 19 needed
I'm in need of a Zetron Model 19 Simplexor store and forward for VOICE. Please email direct with price and shipping. Thanks!
