Thanks for the information Scott. Since the only difference I see is
the two capacitors, I wonder what makes it more stable. Perhaps it is a
difference in the crystal itself. Have you ever seen a place where the
subject of how the channel elements are individually temperature
compensated (as wh
Hi Jim,
>Makes a pretty clean installation, although one
of the controller manufacturers on here recommended
against using computer serial cables as interconnects
for controllers
That'd be us. A PC cable consisting of two D-sub connectors and a long,
25-conductor cable enclosed within
Eric, good point.
I put "...perfectly aligned..." where I really MEANT to have vertically in
there, I missed it.
Too many interuptions.
They're pretty simple... Plug one side into your computer's serial port, and a
radio-specific cable into the other. Attach the radio, run the appropriate
software, and you're in business! It helps to have a 9-12V power supply
attached to the RIB as well, so that you don't have to worry about the
Steve,
You did a great job of hitting all of the key points, and I agree with the
majority of your estimates.
One point that should be clarified is that when dual antennas are used, they
must be separated vertically, one over the other, by no less than 30 feet to
achieve about 55 dB of isolation.
I was thinking reverse protection diodes or something like
that myself. So start checking diodes and caps for dead
shorts?
Thanks,
Vern
On Thu, 13 Dec 2007 19:44:15 -0700
"Gary Hoff" <[EMAIL PROTECTED]> wrote:
> diodes or filter caps in the power supply itself
> Gary
> - Original Messag
diodes or filter caps in the power supply itself
Gary
- Original Message -
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, December 13, 2007 7:25 PM
Subject: [Repeater-Builder] IFR 1100S
OK. I have the 1100S with the bad supply in my hands.
T
OK. I have the 1100S with the bad supply in my hands.
There is a 7.5 amp fuse on what I think is the DC side
that is blowing. It is blowing with the supply out out of
the 1100S. The fuse looks melted so I am guessing over
current? The trouble shooting section in the maintenance
manual tha
John,
Have you contacted Polaris Tech Support for assistance in using their
product? The fellow I spoke with was extremely knowledgeable about my
issue, and he solved the problem in just a few minutes on the phone. It's
worth a try...
73, Eric Lemmon WB6FLY
-Original Message-
From: R
I can't say enough good things about Xantrex myself. I
have a Link 20 monitor system on my boat and I love it.
Several of the boat owners I know use Xantrex products as
well and are very happy with them.
As far as batterys go nothing beats golf cart batteries
for the money. If you have unli
My suggestion would be to look at the Xantrex C12/C30/C40/C60 Charge/Load
controllers (they can be used as either, but not both at the same time).
As a load controller, it provides a low battery voltage cut-off so you don't
destroy the battery by over discharging
As a solar charge controlle
Curious where and cost. Also what diplexers did you use? Working on
a grant for the repeater.
73
Robert
KD4YDC
The power gate is a cute but expensive box... You should be able
to build the equivalent circuit in a less attractive box for under
$30 easy.
The problem with the PWRGate and all the answer/reply posts I've
seen so far is so far there no mention of a low battery voltage
disconnect circuit.
QSL Jim and yes I am aware of RUS & CAS and with the dual squelch mod
as have been running MastrII mobils for years as repeater and MVP's
for remote RX and links. Kind wished the P&S unit was set to loop out
to a voter and back. Guess we can roll our own. Still to looking for
the controller in
Hi,
I have posted this on another group but I know there is a vast amount of
knowledge on this group.
Does anyone have a Polaris Industries PA II box. Please email off the
list as I need some info on howit should operate and the cable connections for
it
Thanks,
John
Mark,
There have been some good suggestions. However, there are two issues
that you need to watch carefully for remote battery backup operation.
The first, as some have mentioned, is the charge current if the
battery is run down and AC power comes back.
For example, if you just tie a battery
If your controller has any logic outputs,config one to turn a external battry
charger on and if you have one with timers and such,program it to cut off when
battery is charged
Joel Hall
Kj4si
-
Never miss a thing. Make Yahoo your homepage.
Yep - I used the info on the Repeater-Builder site to
identify the pick off points where the signals are
found, and soldered directly to the backside of the
pin that the boards plug into on the other side. You
can figure out which points they are by looking at a
schematic of the card cage also. B
On a related note, anyone know a source for cheap high voltage transformers?
Or a place to find the laminations to wind your own?
On 12/13/07, Don Kupferschmidt <[EMAIL PROTECTED]> wrote:
>
> Season Greetings to the groups,
>
> I subscribe to Radio World, and with it comes a news feature called T
Season Greetings to the groups,
I subscribe to Radio World, and with it comes a news feature called The Leslie
Report which has specialty news stories.
In this week's report, there is a story concerning The Peter W. Dahl Company.
He is retiring and closing the business.
I know that some of yo
As others have posted, I think you will be disappointed using that setup.
Here are things to consider:
There are fairly standard "graphs" available from several sources giving
guidance as to need for duplex isolation, isolation curves for cavities, freq
offset, antenna separation, etc.
GE,
I will look into that when we get a chance. Thanks for the thought.
Randy
--- In Repeater-Builder@yahoogroups.com, "Steve Smith" <[EMAIL PROTECTED]>
wrote:
>
> Randy,
>
> I've experienced problems similar to what you describe on several
MII and found it to be harmonic noise on the ptt (osc 10
Hi Jim, So you just solder wires onto the back plane circuit board?
I quess this is my quest to see where most people connect to the
repeater.
Randy
--- In Repeater-Builder@yahoogroups.com, Jim Brown <[EMAIL PROTECTED]> wrote:
>
> Randy, a method I have used a couple of times is to
> take a
Ron _ wrote:
> Be wary of big sites like Monster.com and others. I have heard that
> some of them have had security breaches and 'loose' requirements
> allowing noncompanies to 'harvest' your info for identity theft
> purposes..
>
I've never even posted anything to any of them, and right now
Randy,
I've experienced problems similar to what you describe on several MII and found
it to be harmonic noise on the ptt (osc 10v) line. Installing a >10 uh
inductor where the line enters the exciter pcb did wonders for mine. You may
also want to install a pair of inductors on the 12v line
At 06:26 PM 12/12/07, you wrote:
>I have access to IC 28h mobiles and intend to make a repeater out of
>two mobiles.
>
>...not for heavy use...but casual ...club use...5-10 watts tx. will
>be sufficient
What duty cycle?
>...will be powered by solar
No, it will be powered by batteries, which ar
Are you going to cross band, or stay in the same band?
Your radios should be fine as long as they are not subject to temperature
extremes, or doing a lot of transmitting. You may some receiver desense if you
are staying in one band and do not have sufficient spacing between the two
antennas.
Randy, a method I have used a couple of times is to
take an old computer card back-panel with a cutout for
a 9 or 25 pin connector and bend it so that it picks
up a couple of screws on the rear of the card cage top
or bottom. (You kept those and did not throw them away
did'nt you) I then wired the
Yes I checked power levels and change in power has no effect on the
issue. Yes see where the connections are on a station/repeater.
More a question of how of it. With Molex connectors on backplane or
what works the best?
Randy
--- In Repeater-Builder@yahoogroups.com, Jim Brown <[EMAIL PROTE
At 12/12/2007 21:49, you wrote:
>Randy,
>
>I'm trying to recall...is this a rig where one ICOM has the temperature
>compensation network, and develops a control voltage which is then
>distributed and shared by all the other ICOMs in the radio? If so, and the
>problem just showed up one day, per
Yeah Thanks Paul, Although my question was related to a station or
repeater not a converted mobil.
Randy
--- In Repeater-Builder@yahoogroups.com, "Paul Plack" <[EMAIL PROTECTED]>
wrote:
>
> Randy,
>
> The conversion I did was based on instructions from the guy who
sold the radios, out of a s
If the spur is causing a particular problem to someone
and is caused by some harmonic of the LO chain beating
with the transmitter, you could move the beat by
changing to the opposite side injection on the
receiver. Check the new beat frequencies to make sure
you are not just trading one problem f
Willis, I have used a simple diode circuit in several
repeaters I have converted to battery backup. I like
the solid state solution more than a mechanical relay
for reliability.
The circuit is as follows:
Place a diode in series with the output of your power
supply. (it can be the internal suppl
David: I do not want to be too picky, but your simple statement is not fully
correct. To place components in series or parallel depends on what you are
trying to accomplish as a final result!
Fred W5VAY
Retired Engineer
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTE
MFJ has a new product that may be of interest to some (not all) repeater
owners. It's called the MFJ-4416 Super Battery Booster. This will keep
13.8VDC supplied to your repeater, even if the batteries drop to 9VDC.
(I would suggest setting it for 10VDC). There are some efficiency
questions,
Randy,
The conversion I did was based on instructions from the guy who sold the
radios, out of a shop in Colorado or Wyoming, if I recall...he suggested just
running the controller cable through a hole in the front of the rig, and
soldering the wires inside the radio. I did that, put a DB25 plu
You put resistors in series and caps in parallel. Just so you know
ARS W2DRH
David R. Henry, LME
Licensed Master Electrician
Electronics Tech.
ARRL Instructor
Thanks Bob & Paul for the response. Yes it is the unit with the
compensation line running between all ICOMS. This is kind of where I
have been leaning to.. Course the consternation is that its been
working for a long time without an issue or at least one on that
freq. It may have just moved
Thanks for the help! Got it:-)
Ben
Mark,
I once helped maintain three of the older Icom repeaters for a club. They had a
similar arrangement to what you describe...built-in 12V supply, with binding
posts for direct 12 VDC input, but not an adequate charging system.
All our sites featured well-maintained generator back-up, so we
At 08:55 PM 12/12/07, you wrote:
>--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote:
> >
> > Hi Laryn,
> >
> > Were you still planning on getting that Manual on the Zetron 48. Would
> > very much be appreciated.
> >
> > Wesley AB8KD
> >
>
>Hi Wesley, yes I am. I apologize for the sl
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