Hello gang,
I am wondering what the opinion is of the decibel products db4060
duplexers for 2m service. We have a set that are nearing 30yrs old and
looking for a replacement. The current model never really preformed as
well as the specs. Is this an experience shared by anyone else?
Hi Aaron,
You may wish to look at this article on the repeater builder site.
It explains a common problem you may be having.
http://www.repeater-builder.com/db/db-4060-4062-repair.pdf
73
Bernie Parker
K5BP
--- In Repeater-Builder@yahoogroups.com, Aaron Sloan [EMAIL PROTECTED]
wrote:
Hi Bernie,
We have replaced one johanson cap over the years. We have them
professionally tuned every couple of years and they are OK but the
isolation isn't anything to get excited about. I suppose we could order
new caps, replace them all and start fresh.
Can we do significantly better
At 8/12/2008 07:28, you wrote:
Hi Aaron,
You may wish to look at this article on the repeater builder site.
It explains a common problem you may be having.
http://www.repeater-builder.com/db/db-4060-4062-repair.pdf
...a reason why I never liked duplexers containing lumped elements
re: audio level
As mentioned by Jim and the ACC Notes Idea... a pot would be
the more practical way to go. However, a series resistor also
works. You could series insert a 500K pot, try to target a
desired audio level and replace the pot with a equivalent fixed
resistor. Just another
Thank you this will help everyone!
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED]
wrote:
A scanned PDF in Full-Page format of the Micor UHF Station manual
68P81025E50-H has been uploaded to the Files section of the
Motorola-Micor
Group. This is a temporary location
I have posted earlier that Spectrum Communications Corp is now out of
business. I have a Spectrum Communications Corp S-7R 6 meter repeater
I am trying to put in service. Here are the issues I have and I hope
someone can help me out:
1The receiver synthesizer seems to be dead. Does any one have a
Are you sure you have the encode board plugged in with a reed plugged in?
--- In Repeater-Builder@yahoogroups.com, n9wys [EMAIL PROTECTED] wrote:
More information about this project.
I have the station working - receiving, decoding proper PL tone,
repeating,
transmitting audio, etc. The
I agree, I have had very good luck with TX-RX
--- In Repeater-Builder@yahoogroups.com, KD4PBC [EMAIL PROTECTED] wrote:
You can't beat TX-RX systems. www.txrx.com
Custom made just for you .
Robert / KD4PBC
-Original Message-
From: Repeater-Builder@yahoogroups.com
Anyone have any experience with the new Link Communications repeater
controller? (RLC-DSP)
The Wacom duplexers are very good!
--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
Don, I have 2 Wacom duplexers used but in excellent shape. One is a
WP-639 (2 meter) and a WP-652A (220). Also have 3 TX-RX new in
original boxes models 28-37-11E (6 can
Has anyone used a good quality scanner as a receiver for a repeater and
if so, how well did it work? I'm contemplating a Radio Shack PRO-2055
as it seems to have good receive capability and picks up signal better
than some of our mobile radios.
Jeff Skaggs
Concord-Greene FD
Thanks Eric: I will contact Motorola Parts.
Ken WB6MMV
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED]
wrote:
Ken,
The information you seek is contained in the Power Supply Service
Manual,
publication 6881094E30, which is available from Motorola Parts for
about
Jim is correct by adding the pot to the input of the TS-440 jack.
But, just don't forget to re-adjust the input receiver pot on the RC-
85 back top the correct level for repeat and decoding as set forth in
the manual.
I do believe that one of the last revisions of the RC-85 firmware
either
dear friends
if anybody is interrested in figure out a radio location
then try out the program radio mobile
http://www.cplus.org/rmw/english1.html
you can build networks ... repeatersites ... etc.
there are heights data from a space mission where the heights of the whole
worlds were
So where's the technical content in this
-
Thank You Scott N3XCC!!! I tried my best to figure what the topic had
to do with repeater design and construction. I am so GLAD this thread
is now over!
Learn something Guys-n-Gals here on the
At 14:07 8/11/2008, MCH wrote:
Can someone of some race (pick any - it doesn't matter which) come up
and demand that you let them use your car? I don't see how that could
hold up in any court. It's exactly the same thing - forced use of your
property.
To this I would say no, but
To bring
Most scanners have an extremely broad front-end and as such
would be extremely sensitive to de-sense. Hook it up and let it
receive a signal and then key a transmitter next to it and see what
happens.
Gary - K7NEY
- Original Message -
From: jstechnicalservice
To:
Yes...
The station is a Community Repeater - not the conventional MICOR repeater
that most are familiar with. In other words, it uses a different backplane
and different card configuration than a regular repeater. The primary PL
card is called a Four User Control Module and can have up to
wb6mmv do you still need assistance., I can help, I think ??
Jerry VE3 EXT
I would not use them. The front end on a scanner receiver is as wide as a
double barn door and all kinds of junk comes through.
Fred W5VAY
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of jstechnicalservice
Sent: Monday, August 11, 2008 3:10 PM
I have a DB-4062, which is the 6 cavity version of the 4060. It was
old when placed in service in 1997 but worked OK. Over the years it
just slowly deteriorated until it became essentially unusable.
Finally I took the thing apart to investigate, and was able to
restore it to excellent
No such thing as a good quality scanner receiver when compared to a
commercial quality setup. A scanner is a receiver of compromised design. Not
something that would ever be suitable for a base or repeater setup.
You need to have your current setup evaluated by a 2 way professional. (I
At 15:18 8/12/2008, Paul N1BUG wrote:
Rather than typing up a lot of details, let me refer you to
something I wrote about this a while back.
http://repeater.n1bug.com/duplexerrefurb.html
73, Paul N1BUG
Great write up, Paul, can you say something about how many hours you
put in on it???
jstechnicalservice wrote:
Has anyone used a good quality scanner as a receiver for a repeater and
if so, how well did it work? I'm contemplating a Radio Shack PRO-2055
as it seems to have good receive capability and picks up signal better
than some of our mobile radios.
Jeff Skaggs
Yes and there's another Yahoo group devoted to it. Look there for details.
Seems Link Comm is still
getting the bugs out.
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of
godofrepeaters
Sent: Monday, August 11, 2008 1:09 PM
To:
A community repeater has NO PL Encoder..
The PL from the receiver is decoded and the PL tone is low pass
filtered and passed to the transmitter PL Encode input by the Master
Decoder card in the station.
So, if you key the station locally there is NO PL Encode.
Also, there is NO PL tone on the
Dave Gomberg wrote:
http://repeater.n1bug.com/duplexerrefurb.html
Great write up, Paul, can you say something about how many hours you
put in on it???
Uh, sure too many! Heh.
Seriously, I didn't really keep track but must have been around 15
to 20 hours. Getting some of the parts
Not in those words (PL encoder) no... and I understand that.
I am keying the repeater with an external source (AKA: HT) that is encoding
PL.
The Master Control module is NOT passing PL to the modulator on Pin 2. THIS
is my problem. I need a schematic for the Master Control module that I have
Mark,
What is the number stamped in black ink directly on the PCB of the master
control module? I know you recently received the community repeater manual,
and that manual doesn't contain the information on that module? Odd...
73, Eric Lemmon WB6FLY
-Original Message-
From:
Skip: Have a nice vacation.
Your comment below was totally un-provoked and un-called for.
This list is definitely showing signs of needing a break. Since this list is
such a wealth of knowledge and a wonderful resource to so many people, I
would hate to shut it down because of some who can't
I did this on a similar issue and it worked well!
--- In Repeater-Builder@yahoogroups.com, WA6TFD [EMAIL PROTECTED] wrote:
Jim is correct by adding the pot to the input of the TS-440 jack.
But, just don't forget to re-adjust the input receiver pot on the RC-
85 back top the correct level
A sensitive receiver is usually a terrible repeater receiver.
Scanners do not have good filtering and adjacent channel rejection.
Don't do it!
--- In Repeater-Builder@yahoogroups.com, jstechnicalservice
[EMAIL PROTECTED] wrote:
Has anyone used a good quality scanner as a receiver for a
All it would be is made over crap. He should go get a cheap Micor or
Master II for a receiver.
--- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote:
jstechnicalservice wrote:
Has anyone used a good quality scanner as a receiver for a
repeater and
if so, how well did
This list is on hold for posting by the membership for a while.
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