[Repeater-Builder] Batteries for Backup- Methods

I am going to be installing a repeater that has capability for battery backup soon. I have room in the bottom of the cabinet for a couple of batteries. I know If I want to have them in the cabinet then i need to look at AGM type so I don't have to worry about venting spillage. I can fit 2

[Repeater-Builder] Need help ID'ing a Tower

I have posted pictures of this tower in the Photos section: http://groups.yahoo.com/group/Repeater-Builder/photos/album/2113929203/pic/list. Anyone know who's make of tower this is? It's 90' total, Self supporter. The bottom face is 36 and tapers about 6 per section from there. There are 4 20

[Repeater-Builder] Maxtrac Power setting question

When setting the power level on a maxtrac, do you set for the power level at your intended frequency of operation or do you do it at the test frequency that's in the software and live with what you get at your freq? My example- Installing a 40w VHF 146-174 Maxtrac in the car for mobile

[Repeater-Builder] OT- More comms in movies

I was watching Dark Knight (The new batman Movie) last night, which was filmed partly in Chicago, and there is a scene where Batman is standing on top of one of the roof decks on the Sears Tower (North Side of the tower). In that scene you get a great shot of the antenna mounting grid with all the

[Repeater-Builder] EF Johnson

Anyone on the list have comments/expierences on the New EF Johnson P25 capable repeaters? Good, no good? Tune to the ham bands ok? Reliability? Thanks!!! Tom W9SRV

[Repeater-Builder] PL Problem

I need some suggestions. It seems that my users that have newer Motorola Astro series radios have a problem on my Micor UHF repeater where the PL does not always open up their radios. It seems that it's only Astro type radios that have the problem. I have the PL Deveation set at 1K. It's

[Repeater-Builder] Maxtrac/GM300 Part 2

Ok, I have been radio plagued this past week. I have a 40W UHF Maxtrac that has a bad pa. Look in the photos section, you can where I found a burnt spot and a missing piece across the legs of the transistor. The piece fell out and is charred beyond reconigition. That's problem 1. Second, I have

[Repeater-Builder] HELP!!!!

In an effort to expand radio coverage for an event coming up- we have done the following: System is a 7330 port 1- Local Micor repeater port 2- Link radio half duplex to another repeater port 3- link radio half duplex to another repeater System is normally port 1 2 and it works great. Port

[Repeater-Builder] Maxtrac Question

I have a UHF (D44) 40w 449-470 maxtrac on the bench. All checks out good, except power out. Most I can get out of it is 22 watts, and that happens at 92 on the adjustment scale, any values above 92 yield no difference in power output. Here is the strange thing- I get more out (22W) at 441.300,

[Repeater-Builder] A maxtrac question a little OT..

Does anyone know, or has anyone tried, to use 2 control heads/faceplates on one Maxreac radio? I am outfitting an old ambulance into a communications vehicle and would like to use one radio with a control head/mic in the front and the back rather than needing 2 radios. Thanks! Tom W9SRV

[Repeater-Builder] A little off-topic but may be of intrest to the group

Firefighters' Distrust of Digital Radio System Grows http://www.fireengineering.com/display_news/159642/25/none/Firefighters'_distrust_of_digital_radio_system_grows

[Repeater-Builder] Looking for Micor channel elements

Looking for: KXN1052A TX on 442.3750 KXN1024A RX on 447.3750 Figured I check here to see if anyone happened to have this pair laying around in a junk box doing nothing before bellying up to ICM. I have a set on 45X.XXX or 47X.XXX to trade or name your price on buying them outright. Please

[Repeater-Builder] Icom RC-9500

This may bit a bit OT, but If I post on any of the Digital groups I will be flamed by pro-Dstar guys to no end... I was sitting in the library (you know - the one with the brite white shiny furnature?) this morning reading the latest QST and checking out the review on the ICOM RC-9500

[Repeater-Builder] OT- Weather Radio Recall

This is a bit off-topic, but I thought it would be important to get the word out as life safety is involved... Tom W9SRV NEWS from CPSC U.S. Consumer Product Safety Commission Office of Information and Public Affairs Washington, DC 20207 FOR IMMEDIATE RELEASE August 29, 2007 Release #07-292

[Repeater-Builder] I'VE GOT A QUESTION FOR THE SEASONED PRO'S OUT THERE

What symptoms would one notice if a preamp is overloading the front end of a reciever? Noises, quirks, wierd phonenomia? Thanks!! Tom W9SRV

[Repeater-Builder] DX Radio Systems Repeaters

Anyone have any expierence with DX Radio Systems RTF series UHF repeaters? They good, Bad, easy to interface to? Any feedback would be appreciated. Thanks!! Tom W9SRV

[Repeater-Builder] Interference and t-1504 questions

1. Anyone have an extra set of loops of a T-1504 can? I have a spare can that has probes and I need to flip it over. 2. Has anyone had any problems with interference from the Railroad Locomotive Remote control and telemetry systems? They are on 452. and 457.. I have a UHF repeater near

[Repeater-Builder] Radio Shack Weather Radio

I have read the cool conversions on the RB site to the older rat shack wx radio with SAME However those models are discontinued. The new model- 12-262, is basically the same, but there are some differences. Has anyone tapped into one of these puppy's yet? I noticed the documentation states

[Repeater-Builder] OT-Mitrek Yahoo Group

Does anyone know if the Mitrek group is dead? Last time I posted over there it took a while for it to come through, and I posted again 3-4 days ago and it has yet to come through. I don't want to tie up this group with mitrek specific questions. Thanks For Any Info! Tom W9SRV Yahoo!

[Repeater-Builder] Cushman CE-5

Does anyone have a pdf of the manual for a CE-5? How about a service manual? The signal generator of mine seems to have become sick, the tone audio sounds almost like its motorboating, but the 1k tone is clean coming right out of the unit. The Signal level is way down as well. Any Ideas?

[Repeater-Builder] Thanks to all and a new website to check out!

I just wanted to way thank you to all who have helped me with my repeater project, and I just finished up a webpage about the system that everyone is welcome to check out! www.waldofar.org Without the groups help it may have never got off the ground! Thanks Again! Tom W9SRV Waldofar Repeater

[Repeater-Builder] Help with Noise on recieve

I have a converted motorola mitrek repeater installed at a water tower. It runs up appx 150' of 7/8 andrews heliax to a DB-420. It has been playing happily for several months. In the last few days we have been getting a noise of some sort only on recieve, not on the talk out. It is only

[Repeater-Builder] Jumper help!

I am finishing up my uhf repeater buildup, and I made up some 1/4 superflex jumpers from the radio (Converted mitrek) to the duplexer to replace the crummy ones I am using now (One is a RG-8, the other an RG-8M,lots of adapters and everything, yuk!). The connectors on the radios are so-239,

[Repeater-Builder] Mitrek test set cable

I am in need of the right adapter cable to go from the test set to a mitrek mobile. Test set is model S1056C. If anyone has one they are willing to part with or knows where I can get one that would be very helpful! Feel free to E-mail me direct at [EMAIL PROTECTED] Thanks! Yahoo!

[Repeater-Builder] Help in locating a DB-408 for the ham band

As per recommendations on this group I have settled on a DB-408 for my new UHF repeater project. My problem is I keep running into dead ends in locating one, new or used, to buy cut for the ham band. I talked to Andrews to see if I could persuade them to build me a one- off for 440 but hey

[Repeater-Builder] UHF Recieve preamp question

I'm about to put up a Converted Mitrek mobile 440 repeater and am wondering if a preamp would be a worthwile experiment, and if so what manufactuer/model do you recommend. The radio does not have the factory preamp option installed. Thanks! Tom W9SRV Yahoo! Groups Links * To visit

[Repeater-Builder] New UHF repeater antenna suggestions

Hey all- I am in the process of putting up a new UHF repeater in the area and I am looking for any input on which antenna might best suit my needs. Let me give you some background: It is a motorola Mitrek 30 watt UHF converted to a full duplex. The radios are up and running in the shack. I am