Re: [Repeater-Builder] using two radios in tandem

2006-01-31 Thread TGundo 2003
The biggest and longest running net here in Chicago, which the NWS itself monitors and takes reports from, is done this way. Been running every Monday and every severe weather situation since I can remember. It is done over 3 or 4 repeaters,VHF and UHF,and a 2M simplex frequency at thesame

Re: [Repeater-Builder] using two radios in tandem

2006-01-31 Thread Jim B.
Mark A. Holman wrote: Simulcast can happen on 2 separate frequencies using a device to do it. Then it's not simulcast anymore. Simulcast is transmitting the same information on the same frequency from more then one location/antenna. More then one frequency, and it's multi-cast. -- Jim

Re: [Repeater-Builder] using two radios in tandem

2006-01-30 Thread Nate Duehr
Paul Holm wrote: In this particular situation, the users don't need to hear each other. This will be used for running a Skywarn net on two repeaters which are not linked. Only the net control station needs to hear everyone. Users will be trained to expect this format. If there's ever a

Re: [Repeater-Builder] using two radios in tandem

2006-01-30 Thread Chuck Kelsey
Yep, that was my point as well. Seems like a train wreck waiting to happen for sure. You'd be better off with one guy just manning two rigs with their own. Chuck WB2EDV Nate Duehr wrote: Paul Holm wrote: In this particular situation, the users don't need to hear each other. This will

Re: [Repeater-Builder] using two radios in tandem

2006-01-29 Thread Mark A. Holman
Simulcast can happen on 2 separate frequencies using a device to do it. You will also reccomend spacing of both transcievers several miles away. off hand I cannot recall the manufacture of such a device unless someone on this group sells them. mark h. Paul Holm wrote: Ihave a

Re: [Repeater-Builder] using two radios in tandem

2006-01-29 Thread kh6jkg
I am not an expert, but the first mic circuit would need an impedance transformer, to keep the indivual mic circuits balanced or the audio level will be less. 73's, Jim Kh6jkg. __ Switch to Netscape Internet Service. As low as

Re: [Repeater-Builder] using two radios in tandem

2006-01-29 Thread Bob M.
We're not talking hi-fi here. Many radios are nominally 600 ohm input impedance and it's definitely not critical. Sure, you could end up with a 300 ohh load, but the mikes also have preamps in them, so they probably don't care either. Just talk 3dB louder. Bob M. == --- [EMAIL PROTECTED]

Re: [Repeater-Builder] using two radios in tandem

2006-01-29 Thread Q
I did this once a long time ago,put 2 mic elements in one case,wired two ptt lines on seperate sides of the switch,no interconnections between rigs at all! Added a selector switch to select either or both. Worked perfectly even with completely different radios73,Lee Bob M. wrote: We're

Re: [Repeater-Builder] using two radios in tandem

2006-01-29 Thread Frank or Barbara Rossi
Here is a little mixer circuit that will work for mixing mics. I never built this one to really speak for how well it works. http://www.aaroncake.net/circuits/mixer2.htm N3FLR - Frank On 1/29/2006 2:11 PM, [EMAIL PROTECTED] wrote: I am not an expert, but the first mic circuit would need an

Re: [Repeater-Builder] using two radios in tandem

2006-01-27 Thread Paul Holm
] using two radios in tandem The technical aspect is moot. Logistically, you can't do it. You call up the net and a station on both repeaters respond but they can't hear each other. How are you going to handle that? Chuck WB2EDV Paul Holm wrote: I have a particular situation where I'd

Re: [Repeater-Builder] using two radios in tandem

2006-01-27 Thread Bob M.
be paralleled? Paul - Original Message - From: Chuck Kelsey [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, January 26, 2006 9:13 PM Subject: Re: [Repeater-Builder] using two radios in tandem The technical aspect is moot. Logistically, you can't

[Repeater-Builder] using two radios in tandem

2006-01-26 Thread Paul Holm
Ihave a particular situation where I'd like to use two radios in tandem. The purpose is to be able to run a net on two repeaters which are not linked. I am looking at using GE Phoenix radios because of cost and availability. The idea is to interface two radios in order that they would TX

Re: [Repeater-Builder] using two radios in tandem

2006-01-26 Thread Chuck Kelsey
The technical aspect is moot. Logistically, you can't do it. You call up the net and a station on both repeaters respond but they can't hear each other. How are you going to handle that? Chuck WB2EDV Paul Holm wrote: I have a particular situation where I'd like to use two radios in