I guess no one noticed the connector is an SO-239, not N.
73,
Russ
WB8ZCC
On 9/3/2010 4:44 PM, La Rue Communications wrote:
Perfect. Thanks Leroy!
John Hymes
La Rue Communications
10 S. Aurora Street
Stockton, CA 95202
http://tinyurl.com/2dtngmn
- Original Message -
*From:*
. ;-)
Oh, BTW, the emperor has no clothes either. :-P
73, Russ WB8ZCC
On 8/14/2010 10:11 PM, Kevin Custer wrote:
Russ Hines wrote:
Some related comments, if you don't mind.
Temperature changes seem to be the biggest detuner of largely
mechanical devices like cavity duplexers. We often send our
I see some folks are heading for the Advil. My apologies.
Thanks, Gary, for admitting the 43 doesn't measure power directly. One
myth down.
Of course, it is a directional coupler, no argument. That makes it a
reflectometer, it enables the instrument to isolate forward/reflected
samples
Last round. Hi again, Gary. ;-)
On 8/15/2010 7:09 PM, Gary Schafer wrote:
Hi again Russ,
*From:* Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] *On Behalf Of *Russ Hines
*Sent:* Sunday
*From:* Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] *On Behalf Of *Russ Hines
*Sent:* Sunday, August 15, 2010 7:37 PM
*To:* Repeater-Builder@yahoogroups.com
*Subject:* Re: [Repeater-Builder] Coax length, etc.
Last
That's because there are as many rules as there are thumbs. ;-)
I don't know about anyone else, but I can tell you about the highly
scientific method I use.
I start with a multiple of 1/2 electrical wavelength and trim as
necessary. I'd stay away from an odd-multiple of 1/4 wavelength in
Some related comments, if you don't mind.
Temperature changes seem to be the biggest detuner of largely
mechanical devices like cavity duplexers. We often send our repeaters
off to live in less-than-ideal environments, then expect cavity
input/output impedances to remain as we measured them
Sid, I think I found your formula. Look on page 62 of:
http://www.repeater-builder.com/antenna/pdf/ve2azx-duplexerinfo.pdf
BTW, my guess was wrong. Length is expressed in inches.
73, Russ WB8ZCC
On 8/13/2010 1:44 PM, Russ Hines wrote:
Hmm, the formula is a bit off, but... 30 x 32.785
Hmm, the formula is a bit off, but... 30 x 32.785 = 983.55. I'll also
bet length is expressed in feet.
Looks eerily like someone wants you to cut a one-wavelength piece of
coax cut at the mean repeater frequency.
Just a guess.
73, Russ WB8ZCC
On 8/13/2010 11:38 AM, Sid wrote:
I have a
Jeff was correct to question. I was vague. What I should have said
was indicated reflected power, not VSWR.
But good luck trying to determine an accurate VSWR based on erroneous
reflected readings.
Let the boo birds squawk. Keep questioning, Jeff.
73, Russ WB8ZCC
On 8/6/2010 1:07 PM,
Thanks, guys, a good topic and one that always seems to come up. And
it sparks more questions and comments, of course.
The cable length issue is a brother to if you don't like your VSWR,
change the point along the transmission line where you're measuring
it. By changing the length of the
Thanks for the reply, Kevin. I'm looking forward to seeing the article.
73, Russ WB8ZCC
On 8/5/2010 1:20 PM, Kevin Custer wrote:
Russ Hines wrote:
Thanks, guys, a good topic and one that always seems to come up. And
it sparks more questions and comments, of course.
The cable length
an older Singer, Marconi, or Cushman service
monitor, you can't hardly go wrong with these in good shape and
working order.
As they say, YMMV.
73,
Russ Hines
WB8ZCC
- Original Message -
From: Roger Ewing [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 17, 2004
HI Bob:
You can sit for the GROL test by contacting one of the
"testing agents" listed on the FCC website. The list includes NARTE,
ISCET, NRE (National Radio Examiners) among others.
You'll also need to pony up anywhere from $40 to $80 to
take the test.
73,
Russ
WB8ZCC
-
Hi Frank:
The First Class Radiotelephone Operator's License was replaced with
the General Radiotelephone Operator's License nearly 20 years ago.
Approximately equivalent to the old 2nd Class license, the GROL is
only needed for aviation, marine, and international public fixed
stations.
These
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