Not always
To: Repeater-Builder@yahoogroups.com
From: [EMAIL PROTECTED]
Date: Sun, 10 Aug 2008 23:19:52 -0500
Subject: RE: [Repeater-Builder] Height Gain figure
So if the antenna is already at 1000 feet
height and it is moved up another 100 feet to
This is how it goes.
First, i had high SWR, by any calculations.
I try to made two versions of antennas: One with just hot on top of 1/4 element
and one version with 1/4element with short hot and cold end.
with Slim Jim, i got good results, SWR a little bit high but ok (1.6) and had
good range.
To not always I'd add: *almost never*.
Laryn K8TVZ
--- In Repeater-Builder@yahoogroups.com, Barry [EMAIL PROTECTED] wrote:
Not always
To: Repeater-Builder@yahoogroups.com
From: [EMAIL PROTECTED]
Date: Sun, 10 Aug 2008 23:19:52 -0500
Subject: RE: [Repeater-Builder] Height Gain
At 16:42 8/10/2008, Dick wrote:
An antenna's gain is what it is and it doesn't change with elevation.
I am assuming you mean elevation over the surrounding terrain??
This is not true. For example, a dipole has an energy distribution
pattern that changes markedly with height above ground.
At 18:47 8/10/2008, Eric Lemmon wrote:
Albert, Don't bother calling Motorola Parts. I found the manual
number for the
NTN4668A: 6881106C66. Unfortunately, it has only recently been cancelled
and is NLA. Bummer!
Good news from Pacific Wireless
Communications 800-327-1949
Thank you all for the input. As always, I can trust that this group
has a wealth of distributed knowledge.
Allow me to respond to a few of your suggestinos and comments.
I did look through my P200 Radius manual (don't have it handy or I
would write down # of manual) and found a small section
I have a UHF Repeater using an ACC RC-85 repeater controller, which also
controls a Kenwood TS-440 HF Transceiver as the Remote Base radio. All the HF
Radio control commands seem to work fine, except the Bump Down 500 Hz
command. The command is [Remote Base Prefix] 7 - it just has no reponse.
More information about this project.
I have the station working - receiving, decoding proper PL tone, repeating,
transmitting audio, etc. The only thing it is NOT doing is encoding tone
for transmit. (A reminder - this is a Community Repeater MICOR chassis, NOT
the standard repeater chassis.)
The gentleman who says that you will end up
on the wrong side of a lawsuit is just plain wrong.
The repeater trustee may limit access by licensed
amateurs to a repeater for any reason - any at all AND
the is no recourse by the excluded amateur. Since the
FRRL Aurora IL has families with
I've seen several instances where doubling the antenna hight typically
adds about 20 percent more coverage over normal terrain. Of course this
has it's limits since the earth hasn't been flat for many hundreds of
years. I once saw a SMR operator spend about 100K to go from 200 feet
to 450
Yes, the IR thermometer will show a lower temp on the outside of the case than
the cells are actually experiencing. However, it won't be too far off, and
since the charger stops the rapid charge cycle at about 104 degrees Fahrenheit,
a few more degrees one way or the other won't really make
I recently received a Micor repeater power supply from an SK and was
wondering if there are any schematics available for it? The model
number is TPN 1217B.
Thanks
Ken WB6MMV
I acquired a pair of EF Johnson Viking CK 8571 (intrinsically safe) series
portable radios. These are in the 900 MHz band, and I'd like to try to
convert them to ham use - unless this would be an exercise in futility.
The manual was available online, and after some reading I see that Johnson
No Paul, a blanket statement like that is wrong. The owner
of a repeater was wide latitude, but not complete.
Try banning people of a certain race from a repeater, and
see what happens. The owner of the repeater is not going
to do well.
--STeve Andre'
wb8wsf en82
On Monday 11 August 2008
In the USA, anyone can sue anyone at any time for any reason.
They don't have to even have a valid case to file a suit. Granted, it
won't 'go far', and they will most likely lose (unless you get a judge
who likes to make law rather than interpret it), but they can still file
against you.
So,
OK. I thought that the requests from a few members would have sufficed to
close this thread. Apparently you guys don't play well at the policing
yourselves game after all. So
AS MODERATOR AND LIST OWNER - THIS THREAD IS NOW CLOSED!
Scott
Scott Zimmerman
Amateur Radio Call N3XCC
474
That would be an interesting case.
Does any group of people have the right to demand use of YOUR license
and YOUR equipment? Remember - these are not public transmitters - they
are private transmitters owned by you and the license is granted to you.
As such, the FCC is on record as confirming
Hi again guys .I am looking at installing 2 batteries in a repeater and are
installing 30amp schottky diodes .
I have 2 80 watt panels feeding a 30 amp schottky bridge (one common to 2
diodes ) then onto 2 solar regulators each supplying a battery
Panels -bridge
Sorry guys .The picture didn't come out properly
Thank You,
Ian Wells,
Kerinvale Comaudio,
361 Camboon Road.Biloela.4715
Phone 0749922574 or 0409159932
www.kerinvalecomaudio.com.au
Steve
You are of course quite right. Paul overstates the case for the latitude
provided for repeater owners to control their repeaters. He fails to
distinguish
between operator behavior and ascribed operator status. Most certainly, you
can exclude from a repeater, an operator who uses
Can you people get your damn discussion off this repeater builder site. I'm
interested in hearing about repeaters and directly associated problems NOT
ABOUT SEX OFFENDERS.
Allan Crites WA9ZZU
MCH [EMAIL PROTECTED] wrote:
That would be an interesting case.
Does any group of people
THANK YOU ALLAN! I GUESS SOME PEOPLE DON'T PAY ATTENTION TO LIST OWNER.
Since you don't have control of the audio level anywhere else, I would suggest
using a potentiometer as the attenuator. Hook the output of your remote base
audio to both ends of the pot, and take the input to the TS-440 RCA jack from
the center lead of the pot. Hook the ground end of the pot
,_._, A recent storm damaged my repeater Ant 444.750 it was made By
Antenex FG-4505
5 db Gain, They tuned to Xmit Freq. I also have a G-6 that was hit By
Lightning that I could Repair. But in the Rafters of the garage I found
a Ant I must of bought a long time ago at a Hamfest it is a DB
Hello to the Group,
Does anyone have any information or a cutting chart for the following
antenna? I have one and would like to put it into service on 10
meters. It was given to me without any info or radials. It is
definitely used but appears to be intact. A quick web search turned up
nothing.
Don,
I'd think it's broadbanded enough to be able to work well at 444. The
antenna I have on my 444.5500 repeater (although supposedly tuned to the
ham band) is actually a 450 - 470 MHz, 4-bay dipole itself. and it does VERY
well, even with the modified phasing harness.
Mark - N9WYS
In addition, the defendant will very likely be bankrupted from the
legal fees required to defend himself from such lawsuit, valid or not,
so it's a small consolation that the suit was frivolous.
Richard
http://www.n7tgb.net/ www.n7tgb.net
_
From: Repeater-Builder@yahoogroups.com
Oops! Sorry for my last post, didn't see this in time.
Richard
http://www.n7tgb.net/ www.n7tgb.net
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Scott Zimmerman
Sent: Monday, August 11, 2008 2:04 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re:
Don,
TDE-7260 looks like a Motorola part number, probably assigned to an
off-the-shelf antenna from DB,
maybe a DB404 or DB411. If so then it should work fine down to 444Mhz with
little or no adjustment.
Gary R.
N6LRV
_
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL
Hi Mark...
How about you save some aluminum tubing by not cutting the radials too
short for 10 meterscut 4 radials about 1/4 wavelength or so for
your mid-band 10 meter frequency...start with maximum vertical antenna
length and slide the tubing into each other to get your lowest SWR. If
your
Hey N9EX here
I have one of those on my repeater don't have the model number ,I got mine
used. the 4 bay is 6db gain, and dc grounded so lighting is not suppose to hurt
the antenna.
mine works great
Jack
N9ex
In a message dated 8/11/2008 7:00:50 P.M. Central Daylight Time,
[EMAIL
My reply was strictly tongue in cheek as to the amount of range increase
that would be obtained.
As the other poster claimed that adding 100 feet to some unknown antenna
height would yield an additional 14 miles range.
Free space loss is not going to be a factor in a normal repeater system.
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
[EMAIL PROTECTED] On Behalf Of Dave Gomberg
Sent: Monday, August 11, 2008 8:37 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Height Gain figure
At 16:42 8/10/2008, Dick wrote:
Ken,
The information you seek is contained in the Power Supply Service Manual,
publication 6881094E30, which is available from Motorola Parts for about
$19. Call 800-422-4210 to place an order. This is an extremely valuable
reference manual, and once the existing stock is depleted it probably
Hi Mark,
According to my old Antenna Specialist catalog, what you have is a MINI-PAK
series,
half-wavelength, economy base station antenna. The photo shows the radials
coming straight out, but I would guess there would be some drooping due to
their weight.
Here's some info on the ASPA2010
--- In Repeater-Builder@yahoogroups.com, Scott Zimmerman [EMAIL PROTECTED]
wrote:
AS MODERATOR AND LIST OWNER - THIS THREAD IS NOW CLOSED!
Thank You Scott N3XCC!!! I tried my best to figure what the topic had
to do with repeater design and construction. I am so GLAD this thread
is now over!
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