Hi
thanks for these information, i will install one repeater in deck four , ( the ship contain 8 decks ) i will used UHF repeater GR500 with 45 W to cover all the ship , dimension for the ship ( lenght=160m,height=30m) . another question if i installe 2 repeater diffrent frequences in
Hello. A group I am in was given a Motorola MSF-5000 repeater that
we're going to be using in the LMRS frequency range. I am not a
repeater expert but am doing some of the legwork to figure out what
needs to be done.
To get a frequency coordinated, the repeater needs to operate in 12.5
kHz
We already tryied tests
inside a big ship of our navy force.
Frequencies on vhf band
(140-170 MHz) and we had contact until 6 heavy and closed door on the same horizontical
level , after that nothing at all.
Tranceivers was tk-2160
by Kewnwood company with a power output 5 Watt.
still seeing some get 25k freg.(wide) just had a office center get one in
the 451.xxx area. So I think they are still out there.
- Original Message -
From: cdoe333 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, August 25, 2005 1:28 AM
Subject:
At 12:42 AM 2005-08-25 -0400, you wrote:
Those BCI -31's are good batteries, you can add extras on if
you need to but you would have to go to a HD Truck Parts place or
dealership to make up a special 2 or more battery cable, your cable
should be #6 or larger diameter ( #4 ,or #0 )
As a sugguestion, if the wire has any green corrsion I would replace the
stuff with new, especially if that wire got hot , from my experience.
Mark AB8RU
Tony VE6MVP wrote:
At 12:42 AM 2005-08-25 -0400, you wrote:
Those BCI -31's are good batteries, you can add extras on if
you
Try this- http://www.com-spec.com/narrow.htm
Will
KC4YBZ
In a message dated 8/25/2005 6:46:52 AM Central Standard Time,
[EMAIL PROTECTED] writes:
Hello. A group I am in was given a Motorola MSF-5000 repeater
thatwe're going to be using in the LMRS frequency range. I am not
arepeater
Dimitris,
The basics of radio line of site propagation such as VHF and UHF the
lower the frequency the better and stronger pentration through an
object/medium. So VHF will pentrate a wall better than UHF.
When it comes to going thru openings such as windows the higher the
frequency the
Seems like an exageration to me. Most likely outcome wouldbe that the system would continue to overheat until both batteries went below 11 volts. Possibly the charger would blow a fuse or burn out. IF you call that a fire..ok.I have seen a battery explode when there was not much electrolyte
I would say alot of holes to cut with a torch in those Ships, and they
may been designed to stop water passage in case of a hull breach I
would ask the upper brass permission and discuss this with Engineers B4
Cutting a hole for that cable.
Mark AB8RU
Mike Morris WA6ILQ wrote:
At 03:04 AM
At
03:04 AM 8/25/05, Dimitris Velissaris wrote:
We
already tryied tests inside a big ship of our navy force.
Frequencies on vhf band
(140-170 MHz) and we had contact until 6 heavy and closed door on the
same horizontical level , after that nothing at all.
Tranceivers was tk-2160 by
Kewnwood
No Jack, that is not an exaggeration Ive seen lead acid batteries
blow off front quarter panels on cars and blow cabinet doors off
from slight misuse. Hydrogen gas is nothing to play with. And as for
fire hazzards, high currents can cause a fire pretty quick. Just put
a piece of #22 bare wire
Hi guys.
I have been watching this backup battery discussion.
We use Eastpen Geltech batteries from the states they are the best batteries
no weekly monthly maintenance. We check them for capacity every 6 months and
thats it.
We use a product called Korode Kure on the battery terminals this
Sorry for taking 2 month to reply, I have been busy... move the eprom to another spot, the bottom board will work the best, if it still dose not work, e-mail me at [EMAIL PROTECTED] I can give you a new eprom... JK"R. K. Brumback" [EMAIL PROTECTED] wrote:
I purchased a GE suitcase
Hi my learned freinds.
I am interested if any body has tryed using 3db mobile whips mounted
on a solid ground plain verticaly 180 degrees to each other and fed
with separate coax to rx tx ports. I would use the top whip for tx and
the lower for rx.This antenna would be mounted at the top of the
The official Government listing of Military Specification coaxial cables
is at:
http://www.dscc.dla.mil/Programs/MilSpec/listdocs.asp?BasicDoc=MIL-C-17
Scroll all the way to the bottom to find a link for the latest Qualified
Products List, QPL-17.
73, Eric Lemmon WB6FLY
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