[Repeater-Builder] Desense

2007-10-16 Thread mung
Well the local ham fest rolled into town last weekend and I was able to get some cans. One of which is a DB products bp can model sp6610C. A friend tuned it up for me and I put it between the MASTRII on the receive side and the receive side of the db4048 duplexer that I have which wasn't

[Repeater-Builder] Re: Intergrating comspec ts-64 to MSR2000

2007-10-16 Thread skipp025
Now I've got to look for a copy of it... Please Email me direct so I have your proper email address to send the scans to.. s. Jay Urish [EMAIL PROTECTED] wrote: I was back down at the site today and yup... Flakey... My PL board is definitely going haywire. I have a ts64

Re: [Repeater-Builder] Desense

2007-10-16 Thread Nate Duehr
[EMAIL PROTECTED] wrote: Well the local ham fest rolled into town last weekend and I was able to get some cans. One of which is a DB products bp can model sp6610C. A friend tuned it up for me and I put it between the MASTRII on the receive side and the receive side of the db4048

Re: [Repeater-Builder] Desense

2007-10-16 Thread mung
If I could afford that equipment I would do that. However the thought of spending as much on test equipment as a new car is a little tough. We do have a service monitor in the group I hang out with but it does not have a tracking generator. Vern On Tue, 16 Oct 2007 11:15:11 -0600 Nate

Re: [Repeater-Builder] Desense

2007-10-16 Thread Nate Duehr
[EMAIL PROTECTED] wrote: If I could afford that equipment I would do that. However the thought of spending as much on test equipment as a new car is a little tough. Totally understand. Although many good service monitors can be had for the price of a USED car, not a new one -- if that's

Re: [Repeater-Builder] Desense

2007-10-16 Thread Ken Arck
Trying to make a 30 year old Motrac a reliable repeater shows one doesn't have desense G-d gave him Ken (famous quotes 101)

Re: [Repeater-Builder] Desense

2007-10-16 Thread mung
I think it's an HP of some sort but someone is using it right now and we have to get it back. The person who owns it actually has 2 of them but one needs some work and he is probably going to sell it rather than fix it. On Tue, 16 Oct 2007 12:09:09 -0600 Nate Duehr [EMAIL PROTECTED] wrote:

Re: [Repeater-Builder] Desense

2007-10-16 Thread Nate Duehr
[EMAIL PROTECTED] wrote: I think it's an HP of some sort but someone is using it right now and we have to get it back. The person who owns it actually has 2 of them but one needs some work and he is probably going to sell it rather than fix it. If it's an HP 8920 series, that's virtually

[Repeater-Builder] Tait 2000 help

2007-10-16 Thread Pereira
Hi! I need information about how to make conection and wiring for a repeater using radios tait 2000 . All informatior are welcome . Thanks .

[Repeater-Builder] New FCC Ruling May Benefit Many Ham Repeaters Located At Cell Sites

2007-10-16 Thread Tony L.
If your repeater is located at a cell site, check this out: October 16, 2007 - A Federal Communications Commission representative said today that to meet national concerns for adequate public safety communications, it had adopted an order reinforcing and clarifying a prior order requiring cell

Re: [Repeater-Builder] New FCC Ruling May Benefit Many Ham Repeaters Located At Cell Sites

2007-10-16 Thread MCH
Good reason to increase the lease price... Interestingly, the TRS is NOT hooked into the generator at the towers in one county local to me. The county has to bring in their own generators. Joe M. Tony L. wrote: If your repeater is located at a cell site, check this out: October 16, 2007 -

[Repeater-Builder] Reducing power out when on battery backup.

2007-10-16 Thread ldgelectronics
Hello All, I have a requirement to install a battery backup system at a local ham repeater. It's a GE Mastr II running about 100 watts. With that much RF power, a couple of 100 AH batteries is only going to last a few hours. My first thought was to add a second lower power RF amp (something

Re: [Repeater-Builder] Reducing power out when on battery backup.

2007-10-16 Thread Ron Wright
Dwayne, I have done exactly as you said with a relay and a second pot. It works well. The only problem one does not realize the power savings one might think although it is a noticable amount. The reason is if you look at a MII PA running 100 W its current draw is about 20 Amps. by reducing

[Repeater-Builder] Re: Reducing power out when on battery backup.

2007-10-16 Thread k6jsi
Hi Guys, When reducing power levels on GE PA's, be sure and check the output on a Spectrum Analyzer for spurs at the reduced output power level. Shorty, K6JSI --- In Repeater-Builder@yahoogroups.com, Ron Wright [EMAIL PROTECTED] wrote: Dwayne, I have done exactly as you said with a

Re: [Repeater-Builder] Reducing power out when on battery backup.

2007-10-16 Thread mung
What do you plan to use for batteries? If you have some flexablity I would use four 6 volt golf cart batteries. Best bang for the buck you can get. You should be able to get 235 ah batteries for about $82.00 a piece that means with 4 of them (wired the right way) you can get 470 ah for

Re: [Repeater-Builder] New FCC Ruling May Benefit Many Ham Repeaters Located At

2007-10-16 Thread Ron Wright
Tony, Every cel site I've visited here has its own generator and fuel now. The site my 2m repeater is on has 5 cel carriers and each have right on the equipment plat forms a generator, at least 10 kW, with at least 500 gal fuel tank. This is a 3 FM site and they also have their own large

Re: [Repeater-Builder] Desense

2007-10-16 Thread mung
Thanks. This is a great write up and one for the archives. As soon as we get over to pickup the service monitor (and some free tower sections) I will let you know the specs on it and we will start trying some of these tests. Vern KI4ONW On Tue, 16 Oct 2007 13:25:44 -0600 Nate Duehr

Re: [Repeater-Builder] Reducing power out when on battery backup.

2007-10-16 Thread Ed Yoho
ldgelectronics wrote: Hello All, I have a requirement to install a battery backup system at a local ham repeater. It's a GE Mastr II running about 100 watts. With that much RF power, a couple of 100 AH batteries is only going to last a few hours. My first thought was to add a second lower

RE: Re: [Repeater-Builder] Reducing power out when on battery backup.

2007-10-16 Thread Eric Lemmon
Dwayne, You raise an excellent point! The first question I must ask is, do you really need 100 watts? Since a repeater's range is limited primarily by how well it can receive distant stations (primarily handhelds), you may have far more transmitter power than necessary. Maybe 20 watts is all

[Repeater-Builder] Re: Reducing power out when on battery backup.

2007-10-16 Thread ldgelectronics
Ed, That won't work for us as we only have two stages with the GE equipment, 250 mW from the exciter and 100 watts from the PA. I'm sure there is a way to split the driver from the final, but that's really beyond the scope of this project. Dwayne Kincaid WD8OYG A (hopefully) better method

Re: [Repeater-Builder] Reducing power out when on battery backup.

2007-10-16 Thread ldgelectronics
Eric, Obviously we could probably get by with less power, but I still want to reduce the RF power when the AC is out to maximize the battery life. We tried the trick of lowering the power to 10 watts without telling anyone and a few people in the fringe area that are regular users could not