Re: [Repeater-Builder] Radio or Duplex watts
No, and no. Your repeater would be putting out about 65 - 85 % of your 4 watts, based on the type of duplexer setup. v44kai.Joel. - Original Message - From: x.tait.tech To: Repeater-Builder@yahoogroups.com Sent: Friday, May 28, 2010 4:47 AM Subject: Re: [Repeater-Builder] Radio or Duplex watts yeah no, i have no problem with any of that, what i did have a concern over, was my misunderstanding of the way the question was asked " If I would to use 2 HT radios that are 4 watts each and a duplexer that is 35 watts to build a portable repeater, would my repeater be 4 watts or 35 watts? " Marcus On Fri, May 28, 2010 at 3:24 AM, Mike Morris wrote: Actually a duplexer does have a wattage - it has a power LIMIT. The small chinese duplexers use a tiny, low voltage capacitor inside each stage and the have a limit of 35-40 watts. I have a small duplexer here that has a limit of 50 watts and a large rack mount unit that has a limit of several hundred watts. Things aren't pretty when a duplexer arcs over internally. You have half a chance of repairing the ones that are bolted together. The ones that are welded together make halfway decent doorstops. Mike At 11:24 PM 05/26/10, you wrote: A Duplexer has no wattage as it is neither a Transmiter nor Reciever i am trying to understand your 35 watts point Marcus On Wed, May 26, 2010 at 6:00 PM, kf7eec wrote: If I would to use 2 HT radios that are 4 watts each and a duplexer that is 35 watts to build a portable repeater, would my repeater be 4 watts or 35 watts? Thanks! Michael KF7EEC
Re: [Repeater-Builder] Transformer cores
Hi Doug, I have had this on many occasion, my first experience was, what the heck I'm going to do now! I have tried thread, wax, rubber band and others, best that works 100% of the times are the (right size fishing line) and my favorite plumbers tape (wrap it on the threaded core) I keep a roll in my tool bag. I hope this helped. v44kai.Joel. - Original Message - From: "Doug Hutchison" To: Sent: Saturday, May 29, 2010 12:37 PM Subject: [Repeater-Builder] Transformer cores > Hello, > > Got situation where the 'elastic' or whatever inside RX IF transformer > has disintegrated through age allowing ferrite core to drop to bottom > thus negating adjustment. > > What successful fixes have been found for such a problem which will > continue to allow adjustment yet not jam the core? > > Doug - GM7SVK > > > > > > > > > Yahoo! Groups Links > > >
Re: [Repeater-Builder] Transformer cores
You are welcome, Just make sure you wind the tape the same way you would for the pipe thread (right hand for tightening) so that when screwing it in the thread will seal it, then taking it out wouldn't be a problem. v44kai.Joel. - Original Message - From: "Doug Hutchison" To: Sent: Saturday, May 29, 2010 2:15 PM Subject: Re: [Repeater-Builder] Transformer cores > Hello again and thank you all for the input. > > I shall try the thread/wax combination but remembered I had a plumbers > wrench kit which has a roll of PTFE, wrapped some on one of the three > cores which have dropped out and it works a treat. > Good idea Joel. > > Best regards, > Doug - GM7SVK > > > On 29/05/2010 17:40:57, Joel Liburd (v44...@caribsurf.com) wrote: > > Hi Doug, > > I have had this on many occasion, my first experience was, what the heck > > I'm > > going to do now! I have tried thread, wax, rubber band and others, best > > that works 100% of the times are the (right size fishing line) and my > > favorite plumbers tape (wrap it on the threaded core) I keep a roll > in my > > tool bag. > > I hope this helped. > > > > v44kai.Joel. > > > > > > - Original Message - > > From: "Doug Hutchison" > > To: > > Sent: Saturday, May 29, 2010 12:37 PM > > Subject: [Repeater-Builder] Transformer cores > > > > > > > Hello, > > > > > > Got situation where the 'elastic' or whatever inside RX IF transformer > > > has disintegrated through age allowing ferrite core to drop to bottom > > > thus negating adjustment. > > > > > > What successful fixes have been found for such a problem which will > > > continue to allow adjustment yet not jam the core? > > > > > > Doug - GM7SVK > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > %3 > > > > > > > Yahoo! Groups Links > > >
Re: [Repeater-Builder] Transformer cores
Very very good Doug, It always work for me, never had to even undo one. v44kai.Joel. - Original Message - From: "Doug Hutchison" To: Sent: Saturday, May 29, 2010 3:17 PM Subject: Re: [Repeater-Builder] Transformer cores > Yep, thought that might be a problem when it sets.PTFE is a good > solution...been winding the cores in and out for over 15 minutes and no > problems. > > Thank you, > Doug > > On 29/05/2010 18:50:09, Bill Smith (brsc...@yahoo.com) wrote: > > You need to be careful with Beeswax. it can hold the core tight enough > > that you break it. > > > > > > > > > - > > From: Chuck Kelsey > > To: Repeater-Builder@yahoogroups.com > > Sent: Sat, May 29, 2010 11:46:19 AM > > Subject: Re: [Repeater-Builder] Transformer cores > > > > I've always heard about inserting a small diameter piece of rubber > band in > > between, but have never found anyone that actually had it work. > > > > If it were me, I'd > > get some bees wax, melt it, and quickly dip the core in > > it using a tuning tool so as not to coat the innards. This would put a > > small > > coating of bees wax on it, increasing the diameter and making it a bit > > sticky. > > > > That said, > > I've never done any procedure. > > > > Chuck > > WB2EDV > > > > > > > > - Original Message - > > From: "Doug Hutchison" mailto:specialq@ntlworld.com]> > > To: mailto:repeater-buil...@yahoogroups.com]> > > Sent: Saturday, May 29, 2010 12:37 PM > > Subject: [Repeater-Builder] Transformer cores > > > > > > > Hello, > > > > > > Got situation where the 'elastic' or whatever inside RX IF transformer > > > has disinteg > > > > > > > Yahoo! Groups Links > > >
