Re: [Repeater-Builder] Re: temperature control circuit

Thanks for sharing your circuit, Bob... Have you done any measurements to see how constant the temperature is maintained over time? Looks like a neat little circuit for a couple of other applications. 73, Tony W4ZT [EMAIL PROTECTED] wrote: > At 1/8/2007 15:22, you wrote: >> Hi Bob, >>I wou

Re: [Repeater-Builder] RE: repeater antenna suggestions

I seem to remember Myth Busters busted that one ;) 73, Tony W4ZT Mike Perryman wrote: > You must be talking about the Darwin Award story.. LOL! > 73 > Mike Perryman > www.k5jmp.us > > > > -Original Message- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] Behalf

Re: [Repeater-Builder] how to build a very simple repeater

shame_you_promise wrote: > hi im thus anybody here who knows on how to build a very simple > repeater controller with-out any programming just a verry simple > repeater controller...and also how to connect the two radio tnx... > This is actually a very simple thing to do but it will not mee

Re: [Repeater-Builder] Z Matcher schem..jpg

Yup.. that schematic, the parts layout, the parts list and photographs I took of both the UHF and VHF units are on my web page at and were posted here 1/25/2006. 73, Tony W4ZT John J. Riddell wrote: > > This may already have been sent but here it is again...the schem

Re: [Repeater-Builder] Re: Fan timer

Lee Williams wrote: > I on the other hand run my fans 24/7,why switch them at all? Many repeater locations are very dirty. Running fans when there is nothing to cool just circulates the dust and dirt and deposits more of it inside your equipment. Many folks haven't re-discovered the pressurize

Re: [Repeater-Builder] Small (and LARGE) fonts (Please read)

You can configure Thunderbird to put messages from different accounts into one folder if you like. When I switched from Eudora to Thunderbird all the imported messages were brought on board in their respective folders and all of those folders were placed in one folder in Thunderbird. After that

Re: [Repeater-Builder] OT RED CROSS

It is easy to criticize the Red Cross when you aren't a participant or have had a family member who is. My step son took leave from his administrative job in a comfortable Connecticut hospital to work as a volunteer for two weeks in a shelter located in a Slidell, LA high school gymnasium, just

Re: [Repeater-Builder] ELT Receiver on Repeater

Two dots don't work... try one: 73, Tony W4ZT Mark A. Holman wrote: > For some strange reason I cannot access their web page are they down 4 > updates ? > I did all the settings check. > > mark holman > > Paul Yonge wrote: >> Hamtronics has an R121 Aviati

Re: [Repeater-Builder] Cheap "Tunnel" Heatsink

Here is my version of a 12 Volt dummy load: And, for those of you that are like me and would like to load test HIGH VOLTAGE supplies, here's my high voltage dummy load: Careful... either of them can burn you... BAD. The

Re: [Repeater-Builder] Crimp versus Clamp Connectors

Eric Lemmon wrote: > Lee, > > I appreciate your comments, but I can rebut them easily. I have seen too > many clamp-type connectors pull apart, usually because they were > over-tightened during assembly. Take a close look at a MIL-spec clamp-type > N connector, and you can see that the knife-edg

Re: [Repeater-Builder] Mule on the attack

Too often folks take pictures from unknown sources and credit them with unbelievable things. Read the truth about the so called lion killing mule: A little research usually clears up these questions. 73, Tony W4ZT vmckever wrote: > Some

[Repeater-Builder] Z matcher info.pdf

Here's a link to the GE Z-Matcher info that I posted on my page in January of 2004 for Mike Morris to grab and make a page on repeater-builder.com. I can't seem to find it on RB either so here it is: 73, Tony W4ZT Yahoo! Groups Links <*> To visit your group on th

Re: [Repeater-Builder] How To Navigate Around the Repeater Builder Site???

Here's a link to the GE Z-Matcher info that I posted on my page in January of 2004 for Mike Morris to grab and make a page on repeater-builder.com. I can't seem to find it on RB either so here it is: 73, Tony W4ZT Jim Cicirello wrote: > Laryn K8TVZ wrote: > OK, time

Re: [Repeater-Builder] Re: Static Cling (was - polyphaser)

Awww, c'mon Kevin, that'd be a good way to raise funds (RB poster or tee?)! Add a little Tesla coil so you'd have a few arcs and sparks and it'd be even more interesting! Happy New Year! Tony King, W4ZT Kevin Custer wrote: > Kevin King wrote: > > >>

Re: [Repeater-Builder] Re: Buzzing audio

I had a significant problem with RFI from my Napco MA1008 alarm panel. The search took me to the keypad cable as the primary source of the RFI. I ended up with clamp on ferrites (2) at the keypad on the ribbon cable, and (1) at the control panel with the keypad cable wrapped through it twice. I

Re: [Repeater-Builder] For Sale

I think that on closer examination you'll find he specified $65.00 to the third decimal place. Tony W4ZT Kevin Berlen, K9HX wrote: > I am sure you are not asking sixty five thousand dollars for your meter. > Just trying > to have a little fun with your typo. 73, > > Kevin, K9HX > > At 09:27 P

Re: [Repeater-Builder] Re: Sinadder

Sinadders are frequently sold on that auction site... begins with an "e", ends with a "y". I bought both of mine there and both for less than that $80 figure. Check it out, take your time, you'll get a nice one for a reasonable cost. There is one listed there now:

Re: [Repeater-Builder] IOTA Switched Power Supply and Noise?

One caution about these switchers. Many of the cheap switchers being made today both as chargers and supplies generate tremendous amounts of RFI. A number of my ham friends have experienced unbearable interference from these devices. Note that they have no part 15 certification and you can ne

Re: [Repeater-Builder] info freg

SERA does not make their frequency database available on line. You can do a Google search for "repeater freq Tennessee" and get lots of hits for sites that list frequencies throughout the state. 73, Tony W4ZT Russ Stafford wrote: > www.sera.org > > - Original Message - > *From:

Re: [Repeater-Builder] Small Signals

Dave, A relatively easy thing you can do is to put a Mastr II exciter in a shielded box with a BNC connector for output. You can easily connect attenuators directly to the box in line to get your weak signals. This works on both VHF and UHF. You can also add a small audio oscillator to modula

Re: [Repeater-Builder] Morse Code Contest on JAY LENO

Great job Dennis... thanks! 73, Tony W4ZT wieckdj wrote: > Here you go: > > Check it out at http://www.ku3o.net > > > Dennis > N4ZKR > > > > > > > > Yahoo! Groups Links > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.co

Re: [Repeater-Builder] Re: Need Kenwood TK-780 repeater controller hookup

That's an interesting device for a computer but I wonder why anyone would go to all that trouble (except for fun of course) when you can easily cool a Mastr II continuous duty PA with the same number of fans and it'll run cool and comfortable forever. For the price you'd pay for that water co

Re: [Repeater-Builder] Fan Temp Switch

My apoligies, I meant to include the URL: I have used the switch shown here on an earlier Mastr II mobile conversion I did. This switch closes at 110F and opens at 90F. 73, Tony W4ZT kc4wgh wrote: >Back again. Any suggested on a vendor for a temperatur

Re: [Repeater-Builder] Fan Temp Switch

I have used the switch shown here on an earlier Mastr II mobile conversion I did. This switch closes at 110F and opens at 90F. 73, Tony W4ZT kc4wgh wrote: >Back again. Any suggested on a vendor for a temperature switch to >turn the 12 vdc fans ON and OFF. I used a test setup this morning

Re: [Repeater-Builder] Digests and stuff

Ladies and Gentlemen (I wonder how many ladies read this list), Confrontation in a forum such as this causes one thing, a loss of good expertise. Please, let's just settle down and take things a little less seriously and try not to flame one another for statements that may be our view point fr

Re: [Repeater-Builder] Desense im guessing/Preamp-n-Pads

er installed from the preamp to the receiver, and i >would need to install the pad there. >Brent > > >----- Original Message - >From: "Tony King, W4ZT" <[EMAIL PROTECTED]> >To: >Sent: Thursday, March 24, 2005 11:22 PM >Subject: Re: [Repeater-Builder] D

Re: [Repeater-Builder] Desense im guessing?

Cody Hayden wrote: >db pads are bandaids and not cures..get a better >duplexer..problem solved.. > > It is common practice to use 6 to 10 db of attenuation between a new high gain (typically as much as +18 db) GaAsFET low noise amplifier and an older receiver. The gain of the preamp is about

Re: [Repeater-Builder] OT Help Needed.....

I receive the signal here in Union City mid scale on the tall antenna. Verified it is transmitting a 100 Hz tone also. 73, Tony W4ZT georgiaskywarn wrote: >Folks, >We need your help. As of 5:50am (local) there is a signal (Sounds >like a nice clean full quieting dead carrier. This is from >F

Re: [Repeater-Builder] Spectrum Analyzer

Mel Farrer wrote: > In my experience, using a tracking generator and spectrum analyser > works fine on "realitively" modest Q circuits. The swept response > display picture, is however a function of the detector response and > the sweep speed of the generator. That is, the detector display w

Re: [Repeater-Builder] Re: Setting dual squelch levels

Mike, What frequency are you guys on? How high is your antenna? How long has this problem been going on? How often does it happen? What's the call of your repeater? There might be an explanation other than intermod. There is one VHF repeater in metro Atlanta (West) right now that frequently

Re: [Repeater-Builder] trimmer caps for rf service

I think the important issue is how the capacitor reacts when passing RF current. A capacitor that works fine in one application may not stay within tolerance when you turn up the heat from within. Most folks using trimmers in RF power amplifiers use good quality mica compression trimmers or sm

Re: [Repeater-Builder] Stuff for sale but no reply's

Doing an advanced search on the FCC ULS yields but one result for Heiniger: Call Sign WB8IIL Radio Service HA - Amateur Status Expired Auth Type Regular Dates Grant 11/15/1988 Expiration 11/15/1998 Effective 11/15/1988 Cancellation11/16/2

Re: [Repeater-Builder] Homebrew a 2M/440 crossband coupler?

Derek, Take a look at this one. You can build your own and by choosing components you can can handle all the power you want: and for hf-6/2/70cm: The weak link will be the capacitors and you can

Re: [Repeater-Builder] Powering the Repeater With Marine Batteries

search into 3-mode battery chargers and the Ibex > units seem to fit the bill for my application. Using your link, I checked > their web site but they state they will not sell to individuals. Is this > true and is there a way around this? > > Richard, N7TGB > > > > -

Re: [Repeater-Builder] Powering the Repeater With Marine Batteries

One of the best ways to manage the charging of your batteries is to use a multi-mode charger designed to properly charge and maintain them. Ibex carries two 3 mode chargers that are very well suited for the job. If you look at their web page under the 12 volt chargers

Re: [Repeater-Builder] Outlet for RG214/U

The Wire Man carries it: and complete specs at: Item #111 RG214/U MFG ADC MIL SPEC per ft/ft 1.88 per ft/100 1.65 per ft/500 1.568 per ft/1000 1.485 73, Tony W4ZT At 07:48 PM 12/28/2004, you wrote: >

Re: [Repeater-Builder] Talking Clock

> To: > > Sent: Saturday, December 25, 2004 6:16 AM > > Subject: Re: [Repeater-Builder] Talking Clock > > > > > >> > >> It seems that I tried to download it WIN XP SP II does not reconize it > >> said > >> invalid handle. > >> &g

Re: [Repeater-Builder] Telewave TWPC-1005-1 (Was DCI Band Pass Filter)

Gary, You can see the specs including curves etc for the DCI filters at and they should answer your questions about them. 73, Tony W4ZT At 11:00 PM 12/26/2004, you wrote: Eric,    Thank you for the explanation of the TWPC-4508-2 bandpass filter and i

Re: [Repeater-Builder] DCI Band Pass Filter

We use DCI filters (the 146/440db) in our Emergency Operations Center located in down town Atlanta. Without the filter we couldn't operate a two meter or 70 cm radio without lots of intermod. Inserting the DCI filter completely cleared up the problem. Since we operate there in close proximit

Re: [Repeater-Builder] Talking Clock

>*** IT Student * >Happy Holidays >----- Original Message - >From: "Tony King - W4ZT" <[EMAIL PROTECTED]> >To: >Sent: Thursday, December 23, 2004 8:16 AM >Subject: Re: [Repeater-Builder] Talking Clock > > > > > > The "Speaking Clock"

Re: [Repeater-Builder] Talking Clock

The "Speaking Clock" works pretty good and is available as FREEware here: 73, Tony W4ZT At 01:12 AM 12/23/2004, you wrote: >Can anyone tell Me of A Software Talking Clock program , I had a old radio >Shack one that I had modified yrs ago on the repeater and

RE: [Repeater-Builder] Requiring CTCSS

At 08:57 PM 12/3/2004, Paul wrote: > The only down side that >I can see is people that don't have a repeater directory in front of them >would not be able to talk on the repeater. A ID with a voice announcement >about the CTCSS tone frequency would/and is going to fix that problem on my >repeater

Re: [Repeater-Builder] snide remarks

Hi Barry, In part 97.205 () there's no provision for anything other than a call sign assigned to an individual or a club. FCC assigned call signs for amateur repeaters ended years ago. When the requirement for FCC assigned repea

Re: [Repeater-Builder] snide remarks

Unfortunately, Nate apparently missed the entire point... At 08:37 PM 12/2/2004, you wrote: >As Dennis Miller would say... "I don't want to get off on a rant here, >but..." oh but you did... >Tony King - W4ZT wrote: > > > > > Gentlemen, if you can&#x

[Repeater-Builder] snide remarks

We all have occasion to suffer from diarrhea of the mouth and fortunately when spoken those words don't linger for long in the minds of most of those that hear them. Unfortunately when those same words are put in print they linger way beyond the half life of plutonium. I really couldn't care le

[Repeater-Builder] mobile antenna question

Slightly off topic but here goes: Just got a new FT-897D at the hamfest and want to run it along with the Alinco DR-600 in the truck. My question is, how much physical separation must I have between the VHF/UHF antennas to prevent damaging either radio while transmitting on the other? Thanks

Re: [Repeater-Builder] radial tire static?

At 01:11 AM 11/18/2004, Don KA9QJG wrote: >That was such a good explanintion about tires , I recall seeing fittings on >Large coax at the Police Communications Center and I ask the radio Man what >it was for and He just said it was Nitrogen. and I was just a Police Sgt and >a Ham and would not un

RE: [Repeater-Builder] radial tire static?

I believe you'll find the following interesting: Gay-Lussac and Avogadro's Law * At a given temperature, the number of moles of a gas is directly proportional to its volume. * The molar volume of a gas, regardless of its identity, is constant * n/V = constant (at constant T and P

RE: [Repeater-Builder] radial tire static?

Nitrogen doesn't expand and contract with temperature??? At 11:45 PM 11/17/2004, Butch Kanvick wrote: >HI, Everyone >The switchover to Nitrogen is sweeping the country, plus they offer free >Nitrogen checks. >Nitrogen molecules, do not expand when heated and they do not shrink when >the tempera

Re: Fw: [Repeater-Builder] Direct TV type dish?

Oh what a waste, Neil ;) 73, Tony W4ZT At 11:57 PM 10/25/2004, Neil McKie wrote: > I got a 5' one outside in the shed - am thinking about making > a bird bath out of it. > > One problem though, how to keep it from freezing ... > > Neil > > >Tony

Re: Fw: [Repeater-Builder] Direct TV type dish?

as much rain fade as possible. Thanks to the group for tolerating this slightly off topic thread :) 73, Tony W4ZT At 11:00 AM 10/24/2004, Maire Company wrote: What direction would I go to look for one.  any model you have the best luck with?  thanks - Original Message - From: Tony Kin

Re: Fw: [Repeater-Builder] Direct TV type dish?

Use a multiswitch. I'm working on a 48" dish right now for looking at 101 alone ;)  Hope to be rid of a LOT of rain fade. 73, Tony W4ZT At 09:00 PM 10/23/2004, you wrote: Tom,   a little help here?   if I am going to look at sat. A  and sat. B with 2 dish's  is there a way to hook them into

Re: [Repeater-Builder] RE sponse Diamond X500

Coy, that was my first question to you 15 Oct, "are you sure it's a Diamond?" because all of them I've seen had weep holes next to the connector. 73, Tony W4ZT At 08:49 PM 10/18/2004, you wrote: >Well, I contacted Diamond Tech support today about the X500. His >response was..." Are the weep h

Re: [Repeater-Builder] Re: Diamond X500

Coy, are you sure it's an Diamond X500? All the Diamond antennas I have messed with have weep holes right in the bottom near the connector which is one of their better options over some of the competition. Other knock off antennas don't seem to have them. Double check they aren't covered if th

Re: [Repeater-Builder] Diamond X500

Coy, Best advice from here is to make sure the weep holes in the bottom are open and never plugged with anything including silicone, or spiders. Some of the other manufacturers don't put them in and really have water buildup. I have used several Diamonds and never had water build up inside b

Re: [Repeater-Builder] WACOM WP-641 Duplexer

I recently wondered the same thing about a Phelps Dodge six cavity duplexer here. I found that all six cables including the two to the tee connector were the same length: 8-3/4 inches tip to tip on PL-259 connectors. () The problem here was noise, lots of it

RE: [Repeater-Builder] DB-212 Harness

You can find harness info at: 73, Tony W4ZT At 11:41 PM 10/4/2004, you wrote: >Does any one know the formula to make a harness for 2 of the db-212 >and for 4 of them?Also how far apart?thanks Mike KC8FWD > >I have a PDF file at work on the DB-212 which gives

Re: [Repeater-Builder] Does the R100 need duplexer if using two anetnnas?

>At 09:57 AM 10/2/04, Wade - KR7K wrote: > > >As long as you are using 1 antenna system for TX and another antenna system > >for RX then that will work without a duplexer, if you follow a few > >guidelines. First, you have to use gain antennas (not 1/4 waves verticals). > >Unity gain, omni-direc

Re: [Repeater-Builder] Re: Propogation Prediction

At 09:03 AM 8/30/2004, Joe D wrote: >You could use my free path analysis tool, rfProfiler-Light, to >predict the path loss in various directions from your transmitter >site. > > > >It is not as slick as the expensive programs, but what do you want >fo

Re: [Repeater-Builder] Looking for WinTone or equivalent program

Wintone can still be downloaded at Anyone make this work well? 73, Tony W4ZT At 05:08 PM 8/1/2004, [EMAIL PROTECTED] wrote: >I'm looking for a program that I can use for diagnostic decoding of DTMF >tones. I see 100's of links on the net to WinTone at >www.st

Re: [Repeater-Builder] Bag Cell Phone interface?

At 11:19 PM 7/28/2004, Mark A. Holman wrote: >All I know these Women Rights groups that are handing out the old cell >phones for dialing 911 probably will squak about it maybe they will go off >the air on 800-906 Mhz. then the FCC will auction that off or let the PSB >have it. Or they'll let Next

Re: [Repeater-Builder] Bag Cell Phone rant?

At 05:19 PM 7/26/2004, you wrote: > >Definition of Analog > >8 Track Tapes >Cassette - dang near >Steel Cars > >How Times have changed Mathew, you forgot one! The HUMAN BEING... we're all analog... so no matter how many digital systems are out there, they all have to come back to analog to inte

Re: [Repeater-Builder] Re: MSR-2000 parts/repair needed

The 5V I had in 1969 was FM. 73, Tony W4ZT At 02:07 PM 6/11/2004, John wrote: >Was it a 5V? (I think they did make AM 5V's - Neil do you know this bit of >history??) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> T

Re: [Repeater-Builder] Re: Decibel repeater antenna question......

You may find this link helpful when looking at the matching harness for these dipoles: http://www.w4dex.com/ant.htm It's appeared here before but will be helpful to see it again. 73, Tony W4ZT At 01:52 AM 4/18/2004, you wrote: >--- Chuck Kelsey <[EMAIL PROTECTED]> wrote: > > Just curious... h

Re: [Repeater-Builder] Part 97 Rules

Or simply go to the Government Printing Office: http://www.access.gpo.gov/nara/cfr/waisidx_03/47cfr97_03.html 73, Tony W4ZT At 12:08 PM 4/10/2004, Eric Lemmon wrote: >For those list members who need a copy of Part 97, but don't want to >wade through the CFR Documents site, here are some links to

Re: [Repeater-Builder] duplexer tuning

At 06:59 PM 2/11/2004, "Danny Allen" <[EMAIL PROTECTED]> wrote: Does anyone know of someone in the Marietta,Ga area that can reprogram a DB-4072 duplexer? Danny, What frequencies are you moving it from/to?  I may be able to help you if you're not in too big of a hurry. (I'm 20 miles South of y

Re: [Repeater-Builder] Astron Meters

At 01:01 PM 1/27/2004, Dave / NØATH wrote: >I would certainly be interested to know where you obtained the digital >meters - that looks really nice. I wonder if they are illuminated? The meters came from Marlin P Jones, , and the part number is 12306 ME. Although their web p

Re: [Repeater-Builder] Z-Matcher adjustment

At 11:10 PM 1/26/2004, you wrote: >Why can't you take the swr meter out ? The Z-matcher is after the place >where the swr meter is. >The purpose of the matcher is for minimum swr or reflected power, the same >as the internal matcher of the GE repeater. That's true, and if you could achieve a perf

[Repeater-Builder] Z-Matcher adjustment

Couldn't agree with you more. The important point is that you can't insert an SWR meter or wattmeter in the line to make adjustments and then take it out. The GE Z-match gives you the directional coupler which gives you a leg up on the adjustment process. Otherwise you are stuck with the max

Re: [Repeater-Builder] Z-Matcher Component Values

Very nice pictures and good job getting component values for the EMR Z-matcher. One question comes to mind and that is, how are you going to adjust it? Lacking a built in directional coupler it would appear that the only thing you could do would be to adjust for maximum transfer of power as meas

Re: [Repeater-Builder] Z-Matcher

Z-match update: I have posted scans of the Mastr II Z-Match documentation including schematic, board layout, parts list, tuning instructions and my pictures: http://w4zt.com/zmatch/ 73, Tony W4ZT Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group

Re: [Repeater-Builder] Fan controller

I use this one: http://repeater.w4zt.com/circuits/fanptt.html Modify it as you see fit. I also put a White-Rodgers fixed setting temperature switch (3F01-111 which closes at 110F and opens at 90F), available from Grainger http://grainger.com, in parallel with the relay and in contact with the h

[Re: [[Repeater-Builder] Spectrum Communication SCR1000 VHF Manual]]

First let me start out by saying that I currently have an SCR1000 in service on 2 meters but the Mastr II is cooking on the bench and will replace the Spectrum as soon as I finish the box to move the CAT-1000 into. At 08:43 PM 11/26/2003, ac0y5 wrote: >It seems a lot of the complaints are from o