Hi Ed,
Is the size a factor?
In most cases where that capacity is needed they are usually parallel, the last
great size I saw was on eBay, and I miss the deal, but 32 20,000 uF 40 v and a
dozen 12,000uF 35 v that's the best I been seeing of late on eBay.
So if you find a source for the
Chris,
To start with you will need to give us much more information, but I think
that one possible question that immediatly jumps into my mind is that of
isolation between the 2 meter remote bases.
As I read your post you have a 440 repeater with three 2 meter radios, all
at the same site.
You may find that after the PL signal goes through the modulator, the
distortion is even lower. It also probably doesn't matter too much; 1% is still
40dB down. You probably don't know (yet) what component is producing that
little bit of signal either; it could be some high-frequency noise
Bob,
I am very pleased to see that I am not the only one studying this issue! I
got started on this track by evaluating the waveform purity of backup power
systems, AKA mini-UPS, that sum several frequencies to approximate a 60 Hz
sine wave. Such devices produce very crude approximations of a
Chris, here is a link to a GE Mastr II system I put together last summer. It
uses a CAT300 (an old model without the Link capability) with the RLS board.
http://sbarcnm.org/forum/index.php?topic=108.0
Using the older CAT300, only two remote base connections are available since
there was no
In a previous posting, I alleged that cheap portable radios are prone to
having CTCSS tones that have significant distortion. Now I can offer some
proof.
My test setup comprises a Motorola R2600D service monitor feeding a Kenwood
HM-250 distortion analyzer from its DEMOD output. The service
Hi John
How's it going?
I remember the Biocom. We tried one out in Palm Beach County way back when. I
recall it used GE PE series radios in it. We took it apart to see.
It's about 45 degrees up here now in Seatttle. We got almost record snow this
year - about 18 inches where I am. 20 miles
Is there a hack to program the Motorola R1225 under 444Mhz?
73, Joe, K1ike
Joe,
No hack is necessary. Simply use the Shift Key Technique to enter
frequencies down to 434.000 MHz. To do this, open the RSS and tab into the
RX or TX frequency window. Hold down the shift key, and type in the first
three digits. Release the shift key and type in the decimal point. Again
Thanks Eric,
Is it possible to realign the R1225 with software to improve performance
out of band?
73, Joe, K1ike
Eric Lemmon wrote:
Joe,
No hack is necessary. Simply use the Shift Key Technique to enter
frequencies down to 434.000 MHz. To do this, open the RSS and tab into the
RX or
Joe,
I am not aware of any means to perform a realignment. The design of the
radio precludes that option.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Joe
Sent: Tuesday, December 30, 2008 3:50
Hi Brian,
Even as a Kenwood Dealer I have dealt with my share of Icom
Repeaters... even having a number of them in Ham Service as
originally purchased by clubs.
I can try to help you off the list if you email me direct. I know
there are one to three versions of almost every model repeater
I've had pretty good luck down to 438MHz with about the half dozen in
my stack. They're all very solid to 440MHz. All of my stack are 1-10W
versions.
On Dec 30, 2008, at 5:43 PM, Eric Lemmon wrote:
Joe,
No hack is necessary. Simply use the Shift Key Technique to enter
frequencies down to
The R1225 looks a lot like a GM300 or Maxtrac on the outside... bears
NO resemblance on the inside :)
On Dec 30, 2008, at 5:55 PM, Eric Lemmon wrote:
Joe,
I am not aware of any means to perform a realignment. The design of
the
radio precludes that option.
73, Eric Lemmon WB6FLY
Hi Milt and Thanks for the response. Here are the answers to your questions
1) For the two I would really like to use they are about 110' apart
vertically. Two of the antennas are mounted on the top of the water tower
(within 15' of each other) and the other is on the ground mounted on the
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