Hello to the group,
My name is Ross KC7RJK This is my first post. Most questions are
answered from that amazing and up to date web site! I thank you all
involved very very much for that. Well here's the question I've found
little and conflicting info on the web about. So feel free to point me
the
!
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025
Sent: Tuesday, March 09, 2010 4:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Dual receivers on one antenna for RX
only site
Ross Johnson
@yahoogroups.com
Subject: Re: [Repeater-Builder] What did I steal off eBay. Unknown wacom
bandpass
I have several of these cavities, they are Wacom VHF Band Pass filters, and
they should tune fine in the 144-148 MHz range.
- Original Message -
From: Ross Johnson Mobile mailto:kc7
You might try finding a spec for a similar maybe same model 2ch
combiner. Then see if your isolator cabling system is the same.
Ross
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ted Leonard
Sent: Thursday, May 27, 2010
You still have those photos? I wouldn't mind looking into building my
own.
kc7rjk
Ross
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Morris
Sent: Monday, May 31, 2010 7:43 PM
To: Repeater-Builder@yahoogroups.com
That's exactly what I'm doing. VHF GE mastrII at 100 watts goes through
2 8 Sinclair pass cavities set at .5db gives 80 watts to the antenna. 4
bay exposed dipole at 75' The receiver and preamp goes through only one
8 Wacom also set at .5db then up to the collinear receive antenna at
100' Very
or is there going
to be issues.
Thanks
Wade
KC0MLT
--- In Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com , Ross Johnson
kc7...@... wrote:
That's exactly what I'm doing. VHF GE mastrII at 100 watts goes
through
2 8 Sinclair pass cavities set at .5db gives 80 watts
There's should be more in your question. Are they going to be tower
mounted where they will be directly above and below the other. That's
very important. If so I'd say at least 70'-100' of vertical separation
but if your not running hardline with no filtering whatsoever you will
still likely have
You know that com port works? Older machines serial ports were poorly or not
even buffered sometimes. Also if this is a programming laptop, where you use it
to program other radios, make sure none of the other programming software is
tying up that com port while the machine is running.
Ross
Yet another option. 930Mhz serial data radios. I found a pair Data Link
Group radios on eBay for $100. Would be like plugging it in to the back
of your computer. There quite easy to get running. Well over 20miles
LOS. And one of my radios was on an omni. I use them for weather
stations and camera
You could try a duplexer? There's enough channel separation it should
work OK. Not sure what duplexer would be best for running duplex though
each side but I'm sure there out there.
73
Ross kc7rjk
-Original Message-
From: Repeater-Builder@yahoogroups.com
You might save on Invar if you can get away with using coupling nuts to
reuse your short rods, and don't forget the jam nuts. I've done it with
no measurable degradation.
Ross
Kc7rjk
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On
I'm in the exact same boat working on a remote receiver. I don't want
the link keyed 24-7 either. I now there are some voters out there that
don't require 1950hz and some that don't need it present 100% of the
time to keep that voter port active. But are there any other voters in
the used or DIY
Hello group,
I have been playing with repeaters for quite some time and now I finally own a
real piece of test equipment. An HP 8924c, before almost dumping more money
into one more, one function, piece of equipment, a spectrum analyzer, I found
these 8924c's on eBay... Shopped for about 6
Are all the original cards in it when it was programmed? If it was programmed
with any optional boards installed they must be in place at all times after.
Also have you've added any cards after programming that will also cause this
fail.
Ross kc7rjk
From: w5rdw
Sent: Tuesday, July 27,
Great thank-you for the fast responses. looks like I didn't get deep
enough on RB. Web searches are getting harder and harder to find
information like that. Looks like I have some reading to do.
Thanks again
Ross kc7rjk
-Original Message-
From: Repeater-Builder@yahoogroups.com
HOLY CRAP I've been wondering that for some time. Guess the manual
isn't always right. and maybe that's why the GE Z-match is there for the
recruiting of true GE tuners.. Never-mind keeping your PA happy at 100%
DC. I always wanted to ask but never did (for thought of flames from the
GE
So will someone post a simple rule of thumb. If you have the option of
optimizing cable length from PA to first cavity, IE you haven't made
them yet what's the best simple rule of thumb to follow to build them
to avoid reactance. 1/2wl if allowed minus coupling loop depth? Or is
that past a simple
FORGOT to multiply cable VF then subtract coupling loop depth!!! Forgive
me :-)
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ross Johnson
Sent: Saturday, August 14, 2010 11:59 AM
To: Repeater-Builder@yahoogroups.com
Others experiencing this? The younger hams
just don't seem to have the curiosity that I had years ago.
73, Joe, k1ike
Except for me!!! And I thank this whole group for making it possible.
Ross
www.kc7rjk.net
Has anyone mentioned band-pass cavities? One on the RX side could be
enough and one more on the TX would do it for sure. There're some for
220 for less then a $100 on ebay right now. This might sound off the
wall but I once saw a DB4021 UHF band-pass cavity tune up quite well on
2 meters!!! Only
like those on Telewave
cavities. The size of the can suggests it is VHF High Band. Did you
measure its pass frequency before opening it up?
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ross
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