larynl2 lar...@... wrote:
Thanx Paul, who responded directly, Randy, and Skipp. That
puts me onto some things to check. So far the harness looks
to be correct, with proper length jumpers made of RG9/B. I
looked at all of the loops and they are also in good shape
and correct size.
Re: Need DB4048 Duplexer Info
larynl2 lar...@... wrote:
Hi all I'm working on a 1 mc. split repeater using this
duplexer.
I would recommend you visit the following web page:
http://www.ke3ht.org/14703/db-4048.html
Transmitter is a VHF Engineering; output is 1 watt. I'm
using a Mastr
Thanx Paul, who responded directly, Randy, and Skipp. That puts me onto some
things to check. So far the harness looks to be correct, with proper length
jumpers made of RG9/B. I looked at all of the loops and they are also in good
shape and correct size. Next I'll check each cavity
Larry did you try RB site. Try this link
http://www.repeater-builder.com/db/pdfs/db-4048.pdf
Randy
--- In Repeater-Builder@yahoogroups.com, larynl2 lar...@... wrote:
Hi all I'm working on a 1 mc. split repeater using this duplexer.
Transmitter is a VHF Engineering; output is 1 watt. I'm
Hello Freddy,
Have you tried to tune it to your frequency? You may not need to cut
the inner tuning rod, as it just may have enough travel to go to your
frequency. It's worth a shot. My 42MHz cans went to 53Mhz with no
problems. The loops will probably need to be modified.
73, Joe, K1ike
hey Joe Yes I have tried that and it will only go to 42mhz They are 35mhz to
40mhz cans and they will only go to 42mhz. The tuning rod is not the real
problem I have it out and all I will need to do is cut more threads on the
threaded rod so it will unscrew further up the can but the cooper
I googled WACOM 604 duplexer and came up with a bunch of info., you might try
the same. I found a 2 page WACOM 604 flyer with the specs says the A,B and C
cans are 80 tall, and the D can is 72 tall. Logic would say shorten the
inner rod 8, but loop size might be smaller and the harness cables
Yes Doug I found that info but there was nothing about a Mod. Yes I did look
before I posted. ??? Freddy
--- In Repeater-Builder@yahoogroups.com, n3dab rb_n3...@... wrote:
I googled WACOM 604 duplexer and came up with a bunch of info., you might try
the same. I found a 2 page WACOM
The T-1504 works very well if clean. The notches are difficult to tune
perfectly if the inside of the cavity has been exposed to moisture. I
have opened up cavities and cleaned with steel wool and coated with
light grease and they tune much better.
I am not sure if anyone else has had this
derek_mcintyre wrote:
I am not sure if anyone else has had this problem, but with these
duplexers I have had a hard time with tuning a pair of cavities with
the stock phasing lines. I seem to be getting double peaks and the
peaks just won't pull together down around 443 MHz. I went and made
At 01:35 AM 4/13/2005 -, you wrote:
I am not sure if anyone else has had this problem, but with these
duplexers I have had a hard time with tuning a pair of cavities with
the stock phasing lines. I seem to be getting double peaks and the
peaks just won't pull together down around 443
Doing some research I have found that each interconnecting jumper must
be an electrical 1/4 wave or performance suffers. The jumpers
attribute 6.5dB each to the isolation of the duplexer. I havn't
gotten around to replacing the RG-214 jumpers on my set of 2M cavitys
but it may help my
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