On Aug 14, 2010, at 7:01 PM, Chuck Kelsey wrote:
I'm the opposite. I want all my email dumped in one inbox. I'm afraid if it
gets sorted to different folders, something's bound to get missed. Just like
the mailman puts all my snail mail in one mailbox. Works just fine. Same
reason I
On Aug 14, 2010, at 9:45 PM, Jeff DePolo wrote:
I disagree. I would accept the notion that the transmitter may not be
happy (and I put that in quotes not to mock you, but becuase I can't come
up with a better word either) because it is not *properly matched* when
looking into a 50+j0 load.
On Aug 14, 2010, at 9:45 PM, Jeff DePolo wrote:
Well, kinda. Many duplexers are spec'ed for 1.5:1 (14 dB RL) input VSWR
max. Fortunately, I rarely see any that are that bad. I'll gladly trade
off a tenth of a dB of insertion loss for several (if not 10 or more) dB of
return loss improvement
Hi Kevin:
Regarding temperature, our club has a site, no A/C or heat, where
temperatures inside the shelter can get below +20 deg F in winter, and
well over 130 deg F in the summer heat. I can't imagine filter tuning
not changing under such conditions, Invar or not. I can see over time
On Sat, Aug 14, 2010 at 20:32, Nate Duehr n...@natetech.com wrote:
Very little, typically. Almost all have solid-state components that would
be utterly dead after an EMP. Tube gear that survives EMP better is
virtually all gone. And user radios are required for any repeater to be
useful,
I don't know about that. Anritsu SiteMaster and CellMaster test sets
are fairly common test equipment available to cell techs here in
Connecticut. Whether they use them (or know how) is another thing.
Joe
On 8/15/2010 2:59 AM, Nate Duehr wrote:
What's up with the RF industry not buying
But why? If all of the power (or, let's hope, at least
99.99% of it)
is
on-channel, *should* a properly-designed and properly-functioning
transmitter misbehave due to the poor match a duplexer presents at
frequencies far removed from the channel center?
Well yes, properly
Actually I think that even though Service Monitors have
finally become *relatively* commonplace in the Ham Shack, the
VNA is not something most hams have seen or know how to use.
For $100, Rick's (Amtronix) return loss bridge is a must-have for anyone
that has a SM with a SA/TG. With it,
Jeff, out of all the PAs you've seen out there, both commonly
used and not-so-common... which ones (in your opinion) are
properly designed (when working right)?
I think a lot of them, generally speaking, are properly designed. That's
not to say that some of them don't have some downsides or
Hi folks
We have a digital repeater in the 420-430 MHz subband that is being
installed shortly on our site. I am concerned about the possible
interference to systems in the 440-450Mhz subband on the same site.
What experience have you folks had with similar systems and
installations? What
I just realized that we also have another commercial analog repeater in
the 420-430MHz band, so close in sidebands would also be a concern.
Burt VE2BMQ
Burt Lang wrote:
Hi folks
We have a digital repeater in the 420-430 MHz subband that is being
installed shortly on our site. I am
I guess you say what type of modulation and bandwidth are you using for the
new Digital Repeater?
Should not be any problem. The digital modulation mask are getting more
efficient in the use of the spectrum as channel bandwidth get narrower. The
name of the game is to get more spectrum
I've brought that issue up a few times, and usually get the blank radio shack
salesman type of stare.
-- Original Message --
Received: Sat, 14 Aug 2010 08:45:47 PM PDT
From: Jeff DePolo j...@broadsci.com
There is no simple rule of thumb, and if anybody tells you that there is,
ask
Russ,
Of course the Bird 43 does not measure power directly. But it does sample
voltage AND current on the line in amounts that are combined to indicate
power.
It is a directional coupler. The only time you will have a problem with it
deviating from its accuracy is when the directivity
Quote from Skip:
Just reading this thread gives me a headache...
Skip, you are not the only one reaching for the Advil. When I read it, I
thought, OH NO, here it goes again.
Randy
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of skipp025
On Sunday 15 August 2010 02:27:17 ZephyrNYC wrote:
On Sat, Aug 14, 2010 at 20:32, Nate Duehr n...@natetech.com wrote:
Very little, typically. Almost all have solid-state components that would
be utterly dead after an EMP. Tube gear that survives EMP better is
virtually all gone. And user
80 in for 200 out
--- In Repeater-Builder@yahoogroups.com, Maire-Radios maire-rad...@...
wrote:
what is the input power on the 200 watt Vocom amp?
K+John
- Original Message -
From: n2len
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, August 14, 2010 9:24
I should have mentioned that RG-223 has a solid silver-coated copper center
conductor, while RG-400 has a stranded silver-coated center conductor, which
makes RG-400 better suited where flexibility counts. RG-142 has a solid
steel center conductor that is solver coated and copper clad, but it
Agreed!!
Mark - N9WYS
-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of Eric Lemmon
(major snippage)
This discussion is both informative and quite entertaining!
73, Eric Lemmon WB6FLY
At 10:10 AM 8/13/2010, Steve wrote:
Hi
the T800,s both series one and two are great, series one uses eproms
series two is an eeprom programmed using a single data line via an rj11
skt on the front and rear. In the UK a series two sells for around 400ukp
a low band series one for around 200ukp.
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
Hi
glad to help. That price is a bit high,ex demo or not, it is still
secondhand and I would imagine $800-850 to be a fair price
73
Steve
- Original Message -
From: Ken Arck ah...@ah6le.net
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 15, 2010 10:53 PM
Subject: Re:
Fuses protect wiring.
Equipment should be fused to match the power handling level of the leads
that supply it. For a 100 watt mobile, I would choose 10ga wire (unless the
leads needed to be quite long) and fuse it at 30amps.
73 Paul
- Original Message -
From: hfd_firefighter
I
Hi again Russ,
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Russ Hines
Sent: Sunday, August 15, 2010 4:54 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Coax length, etc.
I see some folks are
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,
Russ Hines wrote:
Hi Kevin:
Regarding temperature, our club has a site, no A/C or heat, where
temperatures inside the shelter can get below +20 deg F in winter, and
well over 130 deg F in the summer heat. I can't imagine filter tuning
not changing under such conditions, Invar or not. I
I don't know if you really don't get it or you are just trying to be
controversial. I tend to think a little of both.
Either way, I give up.
73
Gary K4FMX
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Russ Hines
Sent: Sunday,
Ken Arck wrote:
At 10:10 AM 8/13/2010, Steve wrote:
Hi
the T800,s both series one and two are great, series one uses eproms
series two is an eeprom programmed using a single data line via an rj11
skt on the front and rear. In the UK a series two sells for around 400ukp
a low band series one
I know I'm going to regret stepping into this one, but since when has that
stopped me before...
Thanks, Gary, for admitting the 43 doesn't measure power
directly.
What do you mean by measure power directly? If you're talking about
comparing a thruline measurement against
I'm looking for input on an antenna plan. Currently have a Diamond X500HNA on
a water tank. Antenna is mounted on a mast, clamped to the fill pipe on the
side of the tank, with base of antenna just above the top of the tank in order
to maintain a circular pattern. See the picture attached,
Sorry, Gary. I have a bad tendency to question what's put in front of
me. That includes what I call the girl copy I read in product manuals
and brochures.
FWIW, girl copy refers to the rarely-true supposed personal
information about the particular lady-of-the-month in certain men's
Looking for video id, photo sequencer, 2-8 watts out so that I may attach
20watt final amp. Also what controller may be used most affectively. I need a
good jobber that may head me in the direction.
Eastern Pa. 800' level ant. de WB3DTG, Bethlehem, Pa. fn20hq73
Hi Ed,
The differences I see between the -25 and -26 are minor. Caps and resistors in
the Low Pass Filter audio stage and a different 12.8Mhz reference with a
voltage tuning pin, where the standard didn't have it. The specifications of
the reference are same otherwise, 1ppm -20 to +70. If you
niteviser wrote:
Hi Ed,
The differences I see between the -25 and -26 are minor. Caps and resistors
in the Low Pass Filter audio stage and a different 12.8Mhz reference with a
voltage tuning pin, where the standard didn't have it. The specifications of
the reference are same otherwise,
It is good to keep in mind that a fuse provides full protection only to the
conductors downstream of the fuse, i.e. between the fuse and the load. While we
often thing we are protecting the wire between the fuse and the point of
supply, it gives only limited protection in that portion of the
Ed,
The tuning pin is the FM pin of the 12.8MHz module. There were several 12.8 MHz
references some with 3 pins and then some with 4 pins which used the half rail
to set the frequency mid point. It was quite acceptable to program to the
closest frequency on the Eprom and pull the reference
I don't know about your neck of the woods, but one of the local ham groups
picked up a Desktrac already tuned on the ham band to their frequency for $125
with the service manual. It does not have enough of a transmit duty cycle for
their semi-busy ham system so it is sitting on the shelf. First
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