In looking at the scan we have of the RS-50M supply it looks
pretty sick.
The one we have is dated January 2000.
If anyone has a good clean paper original and would scan
it for us I'll be happy to make a PDF of it and post it in place
of the one we have.
If you have a different date we'd like
At 08:57 PM 06/20/10, you wrote:
Thanks to all who replyed to my question on the Astron.
Mike, I did not check the box on the 404 Error, but Chuck sent me a
copy of the schematic and when I returned to the site they all opened.
Thanks for the heads up on the Astron Page, I am re-reading as I
yip, your the same age as me, and yes your point is correct
2 many of these youngsters think they know it all,
On Sun, Jun 20, 2010 at 9:23 PM, kevin valentino
kevinvalent...@sbcglobal.net wrote:
Yep, got 2 many years under the belt, guess it shows my age. I'm only 46 ,
been doin this
With all the excitement I missed something. Can you explain this for me?
4) Add the compensation cap. Just remove the 723 chip from it's socket
and solder it across the back of the board, then reinstall the chip.
What is the compensation cap?
BTW:
I've never been able to find a good clear
James, RS-50 is the same RM-50? one is desk top and the RM is Rack mounted
type, If that is so I will scan the schematic tonite and will send it to you.
Regards,
John
YV5AAQ
--- In Repeater-Builder@yahoogroups.com, James ka2...@... wrote:
Hi Guys,
I am trying to download a schematic on this
At 05:40 AM 06/21/10, you wrote:
With all the excitement I missed something. Can you explain this for me?
4) Add the compensation cap. Just remove the 723 chip from it's socket
and solder it across the back of the board, then reinstall the chip.
What is the compensation cap?
It's a
Thanks for the info Joe- I will check it out.
Tom
W9SRV
--- On Mon, 6/21/10, burkleoj joeburk...@hotmail.com wrote:
From: burkleoj joeburk...@hotmail.com
Subject: [Repeater-Builder] Re: What have I got?
To: Repeater-Builder@yahoogroups.com
Date: Monday, June 21, 2010, 12:56 AM
Tom,
We have
Everyone is entitled to make an ass out of himself now and then, but you're
abusing the privilege...
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of kevin valentino
Sent: Sunday, June 20, 2010 9:21 PM
To:
Also our above mentioned power supply which operates our 2
Meter and 440 Repeaters and a low power link started humming
yesterday. A trip to the tower showed that the two large
wires coming from the Pass Transistors to the post on top of
the regulator board and into the 1000 Uf
Jeff DePolo wrote:
Everyone is entitled to make an ass out of himself now and then, but you're
abusing the privilege...
Now that's funny...
BTW: I had set the dudes posting privileges to Moderated, but Scott
decided to toss him - - Scott wins.
Onward and Upward.
Kevin Custer
Ordered in error. Restock is 15%, so I'd rather offer it here.
This antenna is NEW. Never unpackaged.
Data sheet here:
http://www.telewave.com/pdf/TWDS-7103.pdf
440-465 Mhz, 6db gain, ruggedized UHF base station antenna.
My cost was $675 delivered.
Offered here for $600 delivered to your
I've been fighting this issue for a while now. I've tried some bandaids to deal
with it, tried multiple repeater controllers (including one I designed myself
with an ATMEGA328 Microcontroller (I'll probably be releasing this design as
open source coming up)... and I'm fighting the same problem
I'm interested. Where are you located shipping-wise?
Matthew Kaufman
(Sent from my iPhone)
On Jun 21, 2010, at 9:12 AM, doug graham batwing...@yahoo.com wrote:
Ordered in error. Restock is 15%, so I'd rather offer it here.
This antenna is NEW. Never unpackaged.
Data sheet here:
Hi Josh,
Instead of resistors, try diodes in series. Each Diode will drop your
voltage. I have series a couple to get rid of standing voltage, especially
if you are down to a half volt or so.
73 JIM
On Mon, Jun 21, 2010 at 11:57 AM, Josh josh.kit...@gmail.com wrote:
I've been fighting this
At 08:57 AM 6/21/2010, Josh wrote:
When the squelch is closed, I get right around 8 volts, taken from
pin 8 of the modified mobile audio/squelch board - the tried and
true process just about everybody uses. When the squelch opens,
I'm at not ground potential, but right about half a volt.
Josh;
You could also use a 2n7000 fet in place of the 2n device in that
circuit.. 2n700 FET's have an on trigger of between 2-4 volts. as the switch
point and switch like an npn transistor for this app.. the input does not
require a resistor ( the gate )as it can swing to ~12v before
I always use an NPN transistor (2N4401 or whatever floats your boat) as an
inverter on the Micor COR, with a voltage divider on the base. Micor COR
to base through 10K, 4.7K from base to emitter, ground emitter, collector
becomes active-high COR. Pull up collector with 12V through 1K (or
Hi Josh,
You can mod your Micor, but you'll keep running into similar problems when you
interface your controller with other repeaters. COR outputs can be driven by
Darlington transistors, LED drivers, squelch ICs, etc., and not all will go as
low as you want.
Here's how we've designed our
Here's how we've designed our controllers' COR, CTCSS, and
logic inputs for many years: Feed the COR signal to the top
of a voltage divider. The upper resistor is 10K and the lower
is 4.7K. Feed the junction of the divider to the base of an
NPN such as a 2N3904, 2N, etc. You'll
Hi Jeff,
Here's how we've designed our controllers' COR, CTCSS, and
logic inputs for many years: Feed the COR signal to the top
of a voltage divider. The upper resistor is 10K and the lower
is 4.7K. Feed the junction of the divider to the base of an
NPN such as a 2N3904, 2N, etc.
I was given the opportunity of placing 3 repeater antennas at the very top of a
180 foot cellphone monopole tower. A horizontal arm mounted on the top of the
monopole will allow the mounting of my 3 repeater antennas. Horizontal
separation should be no less than 6 feet apart from each other.
1) Don't exceed 200 feet above ground unless your tower is lit,
registered etc ... a DB-224E on top of a 180 foot tower will exceed 200
feet ...
2) Dipoles rule ... they are the best for weather and wind resistance
(and don't forget about lightning!). A dipole is likely to last a lot
longer
--- In Repeater-Builder@yahoogroups.com, aliefcert domin...@... wrote:
REACT Urges Opposition to FCC NPRM 10-119
...
REACT International is urging all Teams and Members to submit comments
in Opposition to this NPRM. We suggest reviewing some of the other
comments prior to submitting a
Is the desired coverage area perfectly circular?
Matthew Kaufman
n2len wrote:
I was given the opportunity of placing 3 repeater antennas at the very top of
a 180 foot cellphone monopole tower. A horizontal arm mounted on the top of
the monopole will allow the mounting of my 3 repeater
Thanks guys - lots of great ideas here. It's good to hear that i'm not in as
unique a situation as I feared... Time to play and see what I can let the smoke
out of :)
Josh
--- In Repeater-Builder@yahoogroups.com, scom...@... wrote:
Hi Josh,
You can mod your Micor, but you'll keep
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