Batboard

Birken Vogt

Thanks for the suggestions thus far. I suppose for Cat5/6 stuff, the aluminum shield/drain wire stuff "should" be just as good as the copper/steel stuff and much easier (more normal) to work with. We are taking over this system from another vendor and our little VFD customer is not the top...

Birken Vogt

More often than not, the WISP is the 800 lb gorilla. We are attempting to take care of the little volunteer fire departments. We can ask the WISP nicely to behave themselves, but the site owner collects rent from them and usually next to nothing from the VFD. So we have to develop some sort of mitig...

Birken Vogt

With WISPs everywhere, we run into this problem from time to time. When they are above our rx antenna, the Cat5 cable will frequently be radiating enough noise to seriously degrade the rx. There have been some hillbilly solutions we have tried such as running the cable inside EMT conduit where it pa...

Birken Vogt

Their dealer locator is completely broken. It makes me wary that they are owned by Bosch, like something similar could happen to them like what happened to JPS.

Birken Vogt

escomm wrote:Telex canceled the DSP223? When?

They still show them on their website but Talley and Tessco do not seem to have them as active items. I was wondering why.

Birken Vogt

Just installing a standard TTP at a high RF site. Rack mount. A lot of the sites we visit have rack mount Vega or more recently, Telex DSP-223 panels installed. But a cursory call to the regular suppliers shows they do not actively sell them. Should we just go with CPI, IDA, etc. or is it worth the ...

Birken Vogt

Thank you for that. It has some more meaningful information, but still a bit vague. It appears they need a cascade truck to come to the site and fill. I have never seen one that I could identify as a hydrogen truck in person. So my guess is this is still just a toy for the big boys, and we will stic...

Birken Vogt

So which storage method are ATT, T-mobile, etc using in the boxes I am seeing and how are they getting refilled?

Birken Vogt

Trying to read about the hydrogen fuel cells I see at all the newer cell sites, I came upon a bunch of cheerleading about how great they are, how you don't have to rely on a diesel generator, etc. But what good is that? Do they have a manifold of large CGA hydrogen cylinders in them or what? How are...

Birken Vogt

A couple of times we made our own "wideband low band" antenna. Spring base, I think the part number is Larsen AS or something like that, drilled out to accept a larger diameter 62" (IIRC) CB whip which is also larger in diameter. So there was no base loading coil. Worked good electric...

Birken Vogt

Well about a dozen phone calls to colleagues who seemed to have forgotten this issue, finally got the correct answer so far as I can tell. It needs firmware checksum # A8E7 to work properly. No idea what version this is. Also I am told this is for Version 2 hardware only, Version 3 radios might use ...

Birken Vogt

I show L869 as the labor code for the 790 CDF option, I can't imagine it is the same code number for the 5710 but stranger things have happened....

Birken Vogt

NMOKHFUD is the one to use. Larsen has a lot of options to choose from but this seems the best. Fully shielded from radio connector to roof mount. No RF leaks into the car. The NMOKUD used to be our standard but it has the short little exposed section on the underside that leaks a decent amount of R...

Birken Vogt

Well since you asked here is the problem: TK5710 Using OST in the CDF style When any OST is selected, the OST rx PL is also selected which is set to "none" for all tones so it goes to carrier squelch. With the loss of geographic separation and use of splinters these days that means we freq...

Birken Vogt

OK, I have a question about programming what I would consider Motorola's Major Kompetitor brand...but radio info board seems to have very few replies to any question and communications support seems to have closed up shop...is there another better place on the web for the Kompetition now or am I out...

Birken Vogt

Do you have part numbers, etc? I looked with interest but did not find much info on the web.

Birken Vogt

I seem to remember it is pretty easy to remove the backplane, then you basically have a circuit board on the table and can look better what is wrong with it.

Birken Vogt

OK, not really a 2 way question but every cop and battalion chief seems to have one of these now. In the past we found that a simple 800 MHz quarter wave gave the best performance. But now we have 800 cell, 1900 PCS, 700 LTE, and 1700/2100 AWS, at least where I am from. Do you all feel it is even wo...

Birken Vogt

On the MTR3000 they snap out. The MTR2000 the thing is soldered onto the board. It is a complete POS and does not want to give up wires without breaking them. That is probably why they changed it. Keep trying. Just beware when it comes time to insert new wires that they may not grab reliably any mor...

Birken Vogt

I don't know the specs but Telewave themselves has always been very helpful to me.

Birken Vogt

Well, it has been up on the mountain a year and a half and the customer does not talk much. But they have snowplows out now so it is getting a workout. Audio between the two radios is perfectly well intelligible. However, their AGC was way too hot, bringing up noise between every syllable, so I turn...

Birken Vogt

They are pretty worthless for our RTO circuits, too, but I would guess we are hardly a step above retail in their estimation, small potatoes.

Birken Vogt

That is the story I have been getting from elsewhere. It is probably correct, especially since this is a newer site without much legacy anything in it.

Birken Vogt

This is something I have been wondering, too. I would guess that low latency would be the key. Do you have a good solid network that you control between points A and B? Or is it going over the public Internet? I know it can tolerate a bit of jumpiness because we program them all the time with cheap ...

Birken Vogt

Our customer has one site that is on a lonely mountaintop and used to be isolated from the outside world, RF only, no landline. We have no easy MW path to anything else useful, either. It could be done, but...$$$$ These days there is a cell site nearby owned by ATC. The primary tenant seems to be Ve...

Birken Vogt

Apparently, 325N is invalid for technical reasons of actually feeding it into a modulator and getting it to work correctly.

Search for 325 here:

http://www.onfreq.com/syntorx/dcs.html

Birken Vogt

Never thought of using a Centracom block.

Do we know if the spark gap board will come off and leave a standard 50 pin connector to hook the cable to?

It would stick out and get in the way in this case.

Birken Vogt

We recently noticed a lack of tx coverage on the back side of a large lattice tower. The tower is a 3 sided tubular steel tower about 5 feet on a side where we are about 100' up. Our customer has a DB222 antenna stood off about 4' from the tower. I am wondering if the narrowness of the entire antenn...

Birken Vogt

Did they go like this: 26 1 27 2 28 3 ? They do. They are the pin numbers of the connectors on the back of the Digitac. I could spend hours with a label maker and scissors and a microscope putting them on. I am trying to find one already done so I can buy it and move on with my life. I would not ev...

Birken Vogt

The one that came from Motorola had pin numbers preprinted on the right side and this is pretty important because they do not go in order top to bottom, they jump around a lot. I'd spend the money to save my time trying to keep track and getting it wrong....

Birken Vogt

I have to run so I can't type a long reply but the standard offset I was taught was 8 dB from 60% deviation to status tone. So my standard adjustment is 1.5kc mod 1000 hz tone = -10 dBm and status tone = -18 dBm. The 13 dB offset is for full deviation to status tone but because of headroom issues, I...

Birken Vogt

I am looking for the connectorized 66 block commonly used as part of a Digitac installation. It has a 25 pair connector on both sides although the one on the right is not usually used. I wound up with one that has a female connector but the one for the Digitac has a male connector on it. The wires f...

Birken Vogt

Quality issues was one thing my partner noted when I told him about this setup. He has had some experience with these while I have had none.

Is there any way to set the receive unit up to indicate comm failure if it receives no messages after a set amount of time?

Birken Vogt

Bill, the Ritron Teleswitch looks like it is intended to be controlled by a hand held unit. Is there some option for both ends automated?

The controlling end is what I need to be waterproof. The controlled end is inside a climate controlled room.

Am I misunderstanding here?

Birken Vogt

I've always used Zetron's model 18. Add the RF engine of your choice. Hardest part is sizing the solar to run it. I have installed them as tank fill, remote gate controls, intrusion alarms etc. Works fine. I read the manual and it looks exactly like what I am wanting. First off, what is the rough c...

Birken Vogt

Folks, I don't know where else to post this so I am putting it here because I know some of you may do this sort of thing. I need to remotely control filling of a water storage tank a couple of thousand feet. Mostly line of sight with some trees. No wireline control is practical or else I would do it...

Birken Vogt

Are you sure it is R15? Because I tried as hard as I could to figure it out in R14 and it never would work. I'll have to see if I can dig up R15 somewhere.

Birken Vogt

First off I rarely use Maxrad mounts. Always NMOKxxx variations for a number of very specific reasons. That being said I cannot remember having greased the oring at any time. It seems that if I pull up on the ring/nut while screwing down, it centers the toggle in the 3/4" bore and then the orin...

Birken Vogt

This is for CDF and USFS land where all repeaters on a particular system output the same frequency and PL so are indistinguishable to the end user other than by signal strength. You select what repeater you want to use by picking from the MPL table but you only want to change the TX tone, the RX ton...

Birken Vogt

There is no better word for it. Jerks, and I am calling them jerks, are licensing frequencies in conflict with our existing ones and we have to keep chasing them off. It is very time consuming and I am afraid if one of them gets established on one of our frequencies without our notice it may be impo...

Birken Vogt

I would use a dremel type cutoff wheel to remove the crimp ring, and it might work on the cover too. If it is a little pressed in plate it could be drilled and pulled with a sheet metal screw, or I might try putting the whole thing on an anvil and hitting it with a large hammer on the side to mash i...

Birken Vogt

My opinion on these sorts of things is get it done with available parts and move on with it, the radio waves do not care what kind of connector they are passing through.

Birken Vogt

If I was in this situation I would cut the crimp ring off the connector and unsolder the center conductor inside the little cover. Crimp a regular 142 type N connector on the end of the wire. Replace the tee with a N type tee F x M x F. Just make sure you trim the cable so that the total length to t...

Birken Vogt

Sounds like you could have used the electric ones

Birken Vogt

I am not a fan of the insulated crimps for anything larger than #12. I only use high quality tools and I have still seen them heat up or start to heat up too much for my taste when loaded near capacity. The longer barrel uninsulated is all I use. Cheap Chinese hex crimpers will crimp the dickens out...

Birken Vogt

The idea will be to use private MW, point to point T1s from the telco, and T1s leased from a neighboring county and radio shop. Ditching the analog leased lines. At no point will anybody else's traffic be on our network, nor any network segments be variable based on outside traffic. The original ide...

Birken Vogt

My plan, if finances will allow, is to use IP over microwave where possible/necessary and use point-to-point copper T1s that have recently gone dark from their original purpose for some data links that no longer exist. Originally I had planned to use DS0s over T1s but I have been told enough times t...

Birken Vogt

Yes, this is a Spectratac system. I had thought that they got the IP devices good enough to where they could all handle these sorts of tones. One thing we will not be doing is sharing this network with anything. It will be completely dark except for these audio streams. But the purpose of doing the ...

Birken Vogt

You saying Kentrox means a lot to me, but at remote sites it concerns me to have to run something off AC power which is all it appears Kentrox have available. I would much rather run off the radio batteries and use a Wilmore supply if necessary than to have to maintain a UPS at the site. Is there a ...

Birken Vogt

Thanks, Bill- I looked at the products on your list. The Raytheon seems like the right thing mostly, but I am concerned about how this will all integrate back at the dispatch office. There are roughly 12 sites with receivers and 6 with transmitters, and it seems like it would become a bit of a mess ...

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