Re: [Repeater-Builder]Transmitting interior temperature

I did a search for talking thermometer and came up with the following item for about 20 bucks: http://www.sightconnection.com/plu-477.html If your controller has outputs that you can control by touchtone you can wire the output to the pushbutton on the thermometer. Then couple the audio of the

Re: [Repeater-Builder] Re: LMR-1200

LMR-1200 has about .9dB loss for 100 feet LDF4-50A has about 1.45dB loss for 100 feet At first glance, it looks like you can gain a little more than 1/2dB by using LMR-1200. Now. the real world. LMR-1200 will require a jumper at the top and the bottom of the cable run. (It's too big to connect

Re: [Repeater-Builder] Re: LMR-1200

2 additional connectors and a jumper at the antenna is still a potential source of trouble in the future, especially for someone who may not be familiar with how to install them properly. LDF4-50A is used extensively and almost exclusively in the cellular business for antenna jumpers. Joe --

RE: [Repeater-Builder] Re: Antenna on the side of a water tower

They are combined. Nextel does this and calls it a "Quasi-Omni" site. There are some drawbacks to it, but it actually works quite well. Most panel antennas used are 90 or 65 degree antennas. The biggest drawback is the 6dB hit that you take on receive and some strange nulls between the secto

Re: [Repeater-Builder] Re: station master bandwidth?

I remember this trick being done by a ham in upstate New York when I lived up there over 35 years ago. I thought that this only "fixes" the reflected power problem but the performance of the antenna is poor due to the signal take-off angle. The foil does not fix the phasing of the elements in

Re: [Repeater-Builder] 440-450 band plan (The normal North vs So Cal :-)

You laugh, but with the use of Time Division Multiplex it may be possible to transmit and receive on the same frequency in different time slots. It may not be that far fetched. 73, Joe, k1ike -- Original message -- From: "Dick" <[EMAIL PROTECTED]> Now, where did I put

Re: [Repeater-Builder] Very busy at the moment...

Or, do this. From the YahooGroups web site: How can I put message delivery on hold while I'm away and unable to check email? How can I put message delivery on hold while I'm away and unable to check email? Or, you can send an email to: [EMAIL PROTECTED] Replace "groupname" in the address with

Re: [Repeater-Builder] Remote control via text message

You could probably do the same thing with an alphanumeric pager. The Motorola Advisor, for example, had a stand that you put it in and it had an RS-232 output. You would have to have some other device/computer to strip off the date stamp, etc. and just deliver the text you want to the controll

Re: [Repeater-Builder] TS-32 story

Comm Spec was actually buying back TS-32 boards a few years ago, if they had good chips in them. They must have had some warranty work that they needed to fulfill. 73, Joe, k1ike -- Original message -- From: [EMAIL PROTECTED] > In a message dated 5/2/2007 9:51:3

Re: [Repeater-Builder] bag phone for repeater 911

When I worked for the local cell company back in the 80-90s, we upgraded our system and the old stuff ended up being installed in South America. 73, Joe, K1ike -- Original message -- From: Benjamin Naber <[EMAIL PROTECTED]> > I wonder what they are going to do wi

Re: [Repeater-Builder] bag phone for repeater 911

A friend of mine has a cabin in rural Canada. I connected a bag phone to a 900Mhz cordless phone using the Motorola interface they used to sell. He put the bag phone up high in the top floor of the cabin and takes the cordless phone around with him (even out on the boat). It works great, but

Re: [Repeater-Builder] bag phone for repeater 911

He is on a lake in Ompah, Ontario. I don't remember the carrier name, it's been a few years. I'll have to ask him. I know that he was on the fringes of the analog coverage, but he told me that the new digital coverage (with a handheld) does not cover his area. joe -- Original me

[Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

Hello to All, I am starting to develop a future ham repeater relation with a tower site(s) owner and recently got a request for something unusual. The company has a fleet of VHF radio equipped vehicles. They want to pull up to a site, enter a touch-tone sequence on the mike, and open a secur

Re: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

But, if I did this, it would not be an "off the shelf" product and I would end up being the support repair for the units. There may be several of them. They want to use the talk around frequency to activate the gate. joe -- Original message -- From: "Dick" <[EMAI

Re: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

If I ended up doing an external TT decoder, I'd probably use the Comm Spec unit. Joe -- Original message -- From: Mike Morris WA6ILQ <[EMAIL PROTECTED]> > NHRC has a DTMF control board for $90 > > however it controls 8 dev

Re: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

This is absolutely the best idea so far, thanks. Cost does not seem to be an issue at this point. Product support can be by their existing two-way shop that maintains the fleet radios. Thanks, Joe -- Original message -- From: "Maire-Radios" <[EMAIL PROTECTED]>

Re: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

They rejected this idea. They want to use the company radios, for some reason that I can't figure out. Joe -- Original message -- From: "Chuck Kelsey" <[EMAIL PROTECTED]> > It'll be much more secure than broadcasting tones over the company frequency > where some

Re: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

You are correct. That's why I want to find something commercially built and recommend it to their two-way radio group or electrician. I want to keep my distance from this project. My part of the project would be to find something that they want, not necessarily what I would do. I tried to

Re: [Repeater-Builder] OT: Need to find a product to develop goodwill at a tower site(s)

Actually, they will have to replace all the mikes with TT mikes. Given the cost of the new mikes and special equipment at the electric gates, etc, it would be a lot cheaper to go with the garage door opener style system. Maybe I'll work up an estimate of what they might spent for both systems

Re: [Repeater-Builder] When 4, 6 or 8 Cavities just won't due...

I too was trying to figure out the harness. I've never seen something like this before. I also saw only 3 cans in the transmit side. This must be a low power duplexer, as these appear to be only a notch devices and there are only 3 cans to notch out the transmitter noise from getting into the

Re: [Repeater-Builder] PL-259 type 50 ohm terminations?

Why not use an adapter on what you have? Joe -- Original message -- From: "skipp025" <[EMAIL PROTECTED]> > Re: PL-259 type 50 ohm terminations? > > Anyone know any place/source selling 50 ohm terminations with > a PL-259 type connector. I've got a ton with N c

Re: [Repeater-Builder] tower mounts

Probably the easiest and cheapest would be to get 6 cross-over plates such as: http://www.tessco.com/products/displayProductInfo.do?sku=491806&eventPage=1 Then supply your own pipe locally for the 2 horizontal pipes and 1 vertical pipe. Joe -- Original message -

Re: [Repeater-Builder] Icom IC-3at as a remote

I used a 4AT for a link transceiver for awhile and I don't remember it being too difficult to interface to my controller. I'll look for any notes that I still may have, but that may take some time. The ham shack is torn apart right now remodeling windows. I remember using a relay to key the H

Re: [Repeater-Builder] Motorola Pagers for telemetry

I think the Advisor was either 512 or 1200 baud POCSG. The RF receiver section determined the frequency range and it plugged into the main board that was the decoder and display. If I remember correctly, you can just plug in the frequency band receiver that you wanted to use onto any main boar

RE: [Repeater-Builder] Re: 220 repeater antennas

Has anyone tried using the Austin antennas that were built for the 200Mhz ACSSB system on the ham band? There are several of them lying around on the ground here in Connecticut. Actually, I was just offered the ACSSB equipment, including the combiner, if I take it all away. I can use the watt

Re: [Repeater-Builder] MASTR II PL Not Working

I've made that mistake before! Drove me crazy until I finally figured it out. Joe -- Original message -- From: Jim Brown <[EMAIL PROTECTED]> > Here is a thought - I got caught on this once upon a > time - the dip switches on the CTCSS board have to be > OFF in the

Re: [Repeater-Builder] feedline advice

If you use 7/8" hardline for the feedline you will need to use 2 jumpers at either end for your connections. This will add a minimum of 4 more connectors to the overall feedline, introducing more loss. More importantly, this will add more points of possible failures. I would use 1/2" hardline

Re: [Repeater-Builder] TX RX Systems Model Number Nomenclature

Some of the numbers that TX RX used were one-of-a-kind. I remember calling them about a combiner they built for a company I worked for. They had all the records of when it was built, who it was built for, and all the specifications. There record keeping was great, they could find the document

Re: [Repeater-Builder] 25 Ohm Teflon Mini Coax Cable

What about two 50 ohm lines in parallel? Look at "Parallel-Connected Coaxial Cables" at : http://www.cebik.com/trans/spcoax.html 73, Joe, K1ike -- Original message -- From: "kq2h" <[EMAIL PROTECTED]> > Perhaps a little off topic subject Does anyone know of a

Re: [Repeater-Builder] Re: Antenna Tower

Some of the expense for a crane is travel time. Depending on the size of the crane, it may have restricted times that it can be moved adding to the expense of job. If I had a tower that I wanted to have taken down by a crane, I would look around for a crane company doing work in my area. For

Re: [Repeater-Builder] Need Advise: 6m Repeater Antenna

I have a 6 meter repeater with the antenna on the top of a 300 foot tower (I'm using a decibel groundplane) and use 1/2" Andrew heliax to feed it. I had 7/8" available, but looked at the difference of loss and could not justify the additional work of using 7/8" hardline. (Try pulling 300 feet

Re: [Repeater-Builder] Need Advise: 6m Repeater Antenna

[EMAIL PROTECTED] wrote: > I think I will just go with a basic Kreckman, Diamond or Comet (in that > order) and some RG-214. I can probably come up with a 20 foot of 1/2 Andrew Heliax and two male N connectors for the price of shipping. > > It is looking like the Site will require less

Re: [Repeater-Builder] Re: Old duplexer tuning question

A little spot of hot pink nail polish on the shaft/nut joint will tell you if someone tried to "tweak" the cans a little..Joe skipp025 <[EMAIL PROTECTED]> wrote: > Once you get the notches in line... firmly secure the > notch position adjustment screws and threaten people > with early

Re: [Repeater-Builder] Re: Old duplexer tuning question

tony dinkel <[EMAIL PROTECTED]> wrote: > I also think my problem with the notches is that I do not have enough > dynamic range on my ifr 1600 to see the bottom. I can't see the bottom on my IFR1500, so I center the sides of the notch that I can see on the center frequency. I figure that t

Re: [Repeater-Builder] Duplexer tuning with Return Loss Bridge

I just tuned a set of 641's with my IFR1500, a couple of 3dB pads, and a dummy load for the unused port while tuning it up. That's all you should need to get them tuned. You can also use the RL bridge to optimize the 50 ohm match. See this article: http://www.eagle-1st.com/notes/duplex/body.h

RE: [Repeater-Builder] Re: Multimeter for $2.99

I've been at some very high RF level sites and the old Simpson 260 never seems to be overloaded. The Fluke digital can do some strange things with RF floating around. Joe Paul Finch <[EMAIL PROTECTED]> wrote: > Coy, > > I have a Simpson 260 in the back seat of my truck I service radios

Re: [Repeater-Builder] New Repeater--Need Advice!

jrinnebraska <[EMAIL PROTECTED]> wrote: > 1. I need a duplexer for this system--what are your thoughts on > cavities, etc. Don't try to go too cheap on you duplexer, it is a common error that new repeater owners make. They sometimes spend more on a controller that talks and makes fan

Re: [Repeater-Builder] polyphaser Help

I hope they used conductive grease on the joint.;-) mch <[EMAIL PROTECTED]> wrote: > I actually saw an install where a MSS did just that - they > had the ground connected to a plastic water pipe! > > Joe M. > > > > > > > Yahoo! Groups Links > > > > > > > Yahoo! Gro

RE: [Repeater-Builder] Bad 4" Heliax (Was Polyphaser Help)

I've seen 6" hardline go bad at an FM broadcast site. Brand new feedline, defective or contaminated insulators between the center conductor and the outer conductor. Total meltdown occured inside the feedline. Joe Eric Lemmon <[EMAIL PROTECTED]> wrote: > Jeff, > > How does 4" Heliax "g

Re: [Repeater-Builder] Cleaning PC Boards (was: Unrelated topic)

Ahh, good old Tri, we used that liberally in the 60's and 70's to clean lots of stuff. It's surprising that we survived that toxic period of time, most of that stuff is banned today. Fortunately, I don't appear to have any symptoms of all these toxic substances of yesteryear (some my argue thi

Re: [Repeater-Builder] OT: FT-8900 help

I had trouble with my FT-8900 when I first got it. The power dropped off on a couple of bands, don't remember which ones. Yaesu fixed it under warrantee and never noted what they did. It's been working fine since. You might ask the question on the [EMAIL PROTECTED] group. 73, Joe, K1ike ---

Re: [Repeater-Builder] Muffin Fan speed

Something simple that I never thought of, great idea!! Joe, K1ike Mike Morris <[EMAIL PROTECTED]> wrote: > And you can mount a Klixon thermostat on the hottest part of the > heat sink and short out the cap to go to full speed. > > Mike WA6ILQ Yahoo! Groups Links <*> To visit your g

Re: [Repeater-Builder] Dupelxer wierdness

I prefer to use a wattmeter and not the service monitor for power readings. When I see strange things while checking power on a duplexer input or output, I always try to remember to look for reflected power. If the duplexer or equipmnet are not tuned to 50 ohm impeadance, the wattmeter will no

Re: [Repeater-Builder] Andrew connector on Eupon cable

I don't remember if they are interchangeable, but I may have a 7/8" Eupen connector somewhere. Tessco was pushing Eupen years ago when they had the falling out with Andrew. Their older catalogues may mention compatibility, look around 1996 or so if you can find an old copy. 73, Joe, K1ike --

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

I wonder if the West Mountain Radio "Computerized Battery Analyzer, CBA II" could be somehow used as a load bank for power supply testing? http://www.westmountainradio.com/CBA_ham.htm 73, Joe, K1ike [EMAIL PROTECTED] wrote: > Re> variable power supply load. Info should be in archives se

Re: [Repeater-Builder] Re: NHRC-4 Controler

I suggest that you call NHRC, they are available weekday evenings to talk to a live person. Check their web page for times. I just spoke to him last week about a question on the NHRC-4M2 and he was very helpful. 73, Joe, K1ike steve <[EMAIL PROTECTED]> wrote: > Hi Mike > > I have tried

Re: [Repeater-Builder] Co-Locating in an Elevator Room

I had a UHF repeater in the top of an elevator shaft at a university. I ended up pulling it out due to concerns about fire code violations. It took me a while to get all the carbon dust crap off it. Joe Maire-Radios <[EMAIL PROTECTED]> wrote: > Well my good man They are right. We

Re: [Repeater-Builder] Co-Locating in an Elevator Room

Maire-Radios <[EMAIL PROTECTED]> wrote: > Well my good man They are right. We can not even put a phone dialer in > an elevator room even when it does service the elevator the room is for. We > have had to move fire alarm panels and access control panels out of elevator > rooms. No

Re: [Repeater-Builder] Re: Beer keg resonators - kind of off topic, but relevant

Something to consider: Now that TV stations are converting to HDTV you may be able to find some ridged hardline pieces that would be suitable for making 6 meter duplexers. I have seen a situation where the TV station removed large diameter hardline and replaced it with smaller diameter hardlin

Re: [Repeater-Builder] G6 144b coil

I would buy a new antenna. If yours looks like any of the ones I took down the phasing section is weathered. I think I've scrapped all of my G6-G7 parts. 73, Joe, K1ike [EMAIL PROTECTED] wrote: > At 3/1/2006 19:05, you wrote: > > Does anyone have a disabled Hustler g6-144b antenna?? I

RE: [Repeater-Builder] lightning arrestors

Eric Lemmon <[EMAIL PROTECTED]> wrote: > I know that Polyphaser is a popular name in "lightning arrestors" but I > wondered why I never saw that brand being used at a cellular telephone site. I've been working cellular (and paging) for about 20 years now and the P brand seems to be the mo

RE: Re: [Repeater-Builder] G6 144b coil

I was interested in James reply because I had similar experiences with newer Hustler antennas. My club repeater, a friends repeater and my 220 repeater all used Hustler G6 and G7 antennas for years with good success. A couple of years ago, we decided to replace the two Hustler antennas at my f

Re: [Repeater-Builder] Re: 6mtr duplexer

6 meters is a very different band and does not always act like the typical 2 meter repeater band. It's somewhere between HF and VHF, has some unique problems with noise (both manmade and natural). It takes a lot of perseverance and patience to get a 6 meter repeater working well. When it's al

Re: [Repeater-Builder] Re: Switching PL on and of on a TS-32

Sounds like good advice, thanks. Joe Coy Hilton <[EMAIL PROTECTED]> wrote: > Call ComSpec tech support. They will tell you how to do it the right > way. They told me but, I forgot or lost the paper that I wrote it > down on. > > AC0Y > > > --- In Repeater-Builder@yahoogroups.com, "ski

Re: [Repeater-Builder] Fan cooling on PA

Blowing air onto the PA allows you to put a filter on the fan input to catch dust and dirt. Doing the reverse pulls unfiltered air into the PA and you can get a big pileup of junk on the PA. (Including and occasion bug or two). Joe "Daron J. Wilson" <[EMAIL PROTECTED]> wrote: > OK, this

Re: [Repeater-Builder] Way OT, but a question...

Don't know what it is, but it may be totally unrelated to the streetlight. Streetlights make a convenient way of obtaining power for devices. Joe Mike Morris <[EMAIL PROTECTED]> wrote: > Some interesting boxes have been appearing on street lights in my area. > > Anybody know what they ar

Re: [Repeater-Builder] Way OT, but a question...

Thinking about it, it may be part of the Ricochet system. Look at: http://www.ricochet.net/shared/docs/how_it_works.pdf Joe Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email

RE: [Repeater-Builder] Band-split units

I have a couple of the older Austin triplexers and they work well. Dick Austin tuned them up for me years ago when he was building them. I believe that someone else then took over the manufacturing part of the business and quality may have gone down. 73, Joe, K1ike [EMAIL PROTECTED] wro

RE: [Repeater-Builder] 6 meter low band Duplexers

Is this in addition to lengthening the cans? Kevin King <[EMAIL PROTECTED]> wrote: > Put a large dist on the bottom of the tuning rod. make sure the diameter is > such that you have no less than a 1/4 inch to the wall of the can. then put > them on the network analyzer and tune and trim the

Re: [Repeater-Builder] scanner interference

Similar situation here in Connecticut on the 145.29 W1BCG Killingworth repeater. The repeater is located at a firehouse. The firefighters had a scanner programmed to 155.385 (LifeStar Ambulance) and it had a 10.7 IF. Everytime it stopped on 155.385 we received a signal on our input. A hard o