Ken:
About that same time a friend of mine in Norman, Oklahoma
modified his UHF to VHF remote base to add a home built
GLB synthesizer to his tube VHF remote. He built the
logic for it and I think that he used a 567 tone decoder
set. I remember this because it was after I got out
of school in
That would have been using a GLB synthesizer?
Joe M.
Ken Arck wrote:
Hi folks
Is anyone aware of the earliest use of a synthesized remote base on an
amateur repeater? One that allowed full frequency agility?
My take is that it happened in 1976 (and of course, I think I know who did
it
Very cool, Michael. If it's not too much of a hassle, it would be nice to
know who was first :-)
Ken
At 09:36 PM 9/19/2004 -0500, you wrote:
Ken:
About that same time a friend of mine in Norman, Oklahoma
modified his UHF to VHF remote base to add a home built
GLB synthesizer to his tube VHF
I remember using a 2M synthesized remote base in Las Vegas back in 1975.
They used a VHF Engineering synthesizer - not a GLB (but I don't remember
what kind of VHF radio it was hooked up to.) Buried somewhere, I think I
still have the schematics of the system's controller, etc.
LJ
Original
Ken:
Thank you for your e-mail. Well, I wish that I could
say that I did it, but it was my friend, K5HMD, who
had moved to Oklahoma from Dayton, Ohio. I recall that
I helped him with the boards and the space on the building
and other small things. He designed and built it.
He is now living in
Pretty sure I know the answer to this.
But can a transmitter keying into a duplexer that's detuned cause intermod
interference?
I have a transmitter that I turned down the power because it had desense on
it. Turning the power down fixed the desense but now I am wondering since
its still
I don't think that the VHF Engineering synthesizer was out in 1975. I had a
GLIB around 1979 and don't recall that VHF Engineering had introduced their
synthesized unit yet.
Chuck
WB2EDV
- Original Message -
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday,
$!#$ spell checker !
That was obviously GLB not Glib.
Chuck
- Original Message -
From: Chuck Kelsey [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, September 20, 2004 9:24 AM
Subject: Re: [Repeater-Builder] Kinda of a strange question
I don't think that the
I built (my first and only repeater) for the
6-meter 500 KHz split.
I used Mitrek radios and put the repeater on a
large broadcast tower, RX at 500 feet and TX at 1000 feet.
I used no duplexers or filters and have excellent
results. Running at 70 watts with DB 212 folded dipoles for TX and
Tim S. [EMAIL PROTECTED] wrote:
Pretty sure I know the answer to this.
But can a transmitter keying into a
duplexer that's detuned cause intermod
interference?
big time interference.
I have a transmitter that I turned down
the power because it had desense on it.
The transmitter
You beat me by a couple of years. I built a 22S control system from
TTL that was on Palos Verdes and then later on Onyx Peak (9114
feet). The original controller used octal to set the actual N code
into the 22S, but I later added a 2708 lookup table. *52 put you on
146.52, *34 put you on
Since we into nostalga what's the earliest date of a microprocessor
based repeater or remote base controller? I built a Z80 based
controller during 79 and 80 that ended up with 6 K of assembly
language and 4 radio ports. As soon as I replace the watchdog
timer's capacitor (again) it'll be
I built the first micro-processor controlled repeater (what was believed to be)
in the state of Ohio back in 1973. It was the WR8AET 146.85 repeater and the
processor I used was the very first Intel microprocessor, the 4004 which was a
4 bit machine with 16 instructions !!
This repeater
Well hey there Skip! Long time no chat!
Indeed, the 70's were a very cool time in ham repeaterdom. Ahhh, how I
miss the days of the repeater wars with the GRONK folks down in San Diego!
As you may remember, our system was also located on PV. Our repeater (UHF)
was a modified Pulsar II (man I
Hi Dave; Sorry for the delay, I was called out of town! Do you still
have this amp? And is it still $40.00 including shipping? Thanks, Bill
PS: Please forward me your PayPal address for payment!
Dave wrote:
I have a clean GE MASTR II PA for sale:
P/N 19D430488G2 Rev D
851 to 870Mhz
35W
Has a
We just purchased a new Sinclair 2-Meter Collinear antenna for our 2-Meter
Repeater to replace a similar Celwave Stationmaster antenna that was
about 14 years old (turns out we probably really didn't need to, it still
looks almost brand new).
The new Sinclair 2-Meter antenna arrived (ordered for
For several years I had my UHF 6 meter repeaters at the same location, the
antennas about 10 feet apart. They were both tied into the same repeater
controller so you could go in on either went out on both.
The ERP of the UHF was about 160 watts, the ERP of the 6 meter was about 80
watts.
Hello:
Wondering which controller is the better controller for use on a
Yaesu Vertex VXR-5000 UHF Repeater. I have both controllers but
have no idea as to which one would be the better controller to use
with the Yaesu. Wondering if anyone have interfaced either one of
the controllers with
Greetings,
Does anyone have any experience using the Motorola GM300 radios as
crossband link transceivers? I have successfully reprogrammed the
UHF transceiver for 434 MHz. use. All appears to work well. I
understand that I can mate this to a VHF version (reprogrammed for
our 2 meter input
I think you've won! I wirewapped a PC with a 8008 and 2K of 2102
memory in early 75, but by the time my 1702s arrived the guy that I
knew who worked at a place with a EPROM programmer had quit. I
never did program the 1702s I bought for big $$$. Driving to the
hill to toggle the control
At 04:36 PM 9/20/2004 -, you wrote:
Unfair, you've changed callsign (I think). My memory isn't that
great, but I remember a Ken that lived on a house boat in San Pedro,
was that you? What was your call in the good old days? What was
the remote call? That'll probably jog the memory
Thanks for the info.
I may have another duplexer in an older repeater that I could check out
first. It would be nice to have a backup standing by if the original craps
out during the retuning.
-Tim
-Original Message-
From: skipp025 [mailto:[EMAIL PROTECTED]
Sent: Monday, September 20,
Small, small world! If I had thought for a few seconds longer I
would have remembered your call, but not the repeater's call. I
also remember having heard of that particular ID machine. As I
recall the repeater was a few houses down from our remote on P.V.
I still have a 2 meter repeater
here is a stupid question, Can public service
agencies still get license for low band repeaters?
--- Tom Parker [EMAIL PROTECTED] wrote:
It's a private party and the tower is only 300' on a
pretty average
hill, not really what you'd call a hill top site by
any stretch. I
don't know how
Larry, the obvious would be to call Sinclair and ask themyou might also
contact Bob VE3BFM
at www.mapleleafcom.com
he used to work for Sinclair and might have the answer for you.
Maybe it's part of the matching network and they forgot to stuff it
inside :-))
73 John VE3AMZ
-
Anyone that is eligible for low band frequencies can apply for a pair (thru
coordination) and operate a low-band repeater. It isn't just Public Safety
or Utilities any more.
Gregg R. Lengling, W9DHI, Retired
Administrator http://www.milwaukeehdtv.org
K2/100 S#3075 KX1 S# 57
Member: ARRL, RSGB,
I'm almost positive that is the matching stub, had the same issue with
one I put up a few months ago. I just stuffed it up in the aluminum
sleeve and put the thing up. I'm curious about the electrical portion
of it, but not curious enough to tear it apart :)
Good luck!
Daron J. Wilson, RCDD
Hello ...
Seems I still have some of my 440 MHz band coordination notes from
the mid sixties ...
As you might remember I was doing the 440 MHz band frequency
coordination in Southern California - way long before SCRRBA came
along:
Some (all?) of the following will make
Tim S. [EMAIL PROTECTED] wrote:
Pretty sure I know the answer to this.
But can a transmitter keying into a
duplexer that's detuned cause intermod
interference?
It sure can. A local area repeater in Michigan on 146.64/04 was causing
interference, and was being heard, on a 146.68/08
The 60's were a bit before my time, the only call I recognize is
K6QEB. I sure remember WA6ZRB, WB6TSK, WA6VTD, WB6SVC, WB6SLR, etc.
I also remember your retired CHP criuzer with what was it 8 antennas
and a trunk full of 80 and 140Ds? plus a rumored Master pro on the
very bottom layer for
Will do!
Thanks for the input.
-Tim
www.ldservice.com/tim/tim
-Original Message-
From: Tony lelieveld [mailto:[EMAIL PROTECTED]
Sent: Monday, September 20, 2004 2:51 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: detuned duplexer cause intermod?
Tim
Sorry about posting an inquiry on a previously covered topic. I had
done a search on GM300 and come up dry. Can't explain it, but it
happened. I have read all the posts from last months inquiries.
There is a lot of good information there. I'm still interested in
anyone's comments, though.
Yup, that is typical of low-band radio.
Neil - WA6KLA
JOHN MACKEY wrote:
For several years I had my UHF 6 meter repeaters at the same location, the
antennas about 10 feet apart. They were both tied into the same repeater
controller so you could go in on either went out on both.
At 09:51 PM 9/19/2004 -0400, you wrote:
That would have been using a GLB synthesizer?
---A Vanguard, actually. And a Metrum II (remember those?).
As did Mike, we designed a complete TTL controller (5 x 7 cards in a cage
- state-of-the-art!), using 567 decoders that did all the usual controller
34 matches
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