2 additional connectors and a jumper at the antenna is still a potential
source of trouble in the future, especially for someone who may not be familiar
with how to install them properly. LDF4-50A is used extensively and almost
exclusively in the cellular business for antenna jumpers.
Joe
They do have excellent notch rejection, but very poor
bandpass qualities. If you look at a wide-band
spectrum plot, say from 0 to 1000 MHz, you'll find the
two notches, and many peaks, but the majority of the
signal gets through with nearly no attenuation. It's
almost flat from 0 to maybe 400 MHz,
For a water tower, I would imagine the backside null is rather substantial. A
club I was associated with more than 20 years ago tried the side mounting of an
2 meter antenna on the railing of a old style water tower (four legs supporting
the Ball. It performed as expected with deep, very
They are combined. Nextel does this and calls it a Quasi-Omni site. There
are some drawbacks to it, but it actually works quite well. Most panel
antennas used are 90 or 65 degree antennas. The biggest drawback is the 6dB
hit that you take on receive and some strange nulls between the
Bob, et al,
Bob wrote:
FWIW, I never use pin 10 at all;
Kevin wrote:
I try to use that pin when I can, and prefer it over the open emitter
shunt switches.
Incidentally, the Link-Comm board uses the 2.2 uF cap / pin 10
combination to drive the COS output buffer...
FWIW
Bob
I use the Link Comm audio delay and stretch the slow squelch out (on the
GE) with a larger cap. Seems to work pretty well on this Mastr II and RLC
Club combo.
73
Greetings,
I am having a problem with a 440 repeater that I am putting
together. I started with a MVP custom that I converted to 70cm and
duplex modded. The radio tuned quite nicely on 443.800 tx and
448.800 rx. Tx and Rx well before the duplex mod. I made sure to
get Hi side LO xtal
I will see if I can perform that test on Monday AM and post the results. BTW,
the typical propogation delay through all the controllers is less that 5mS, so
pretty fast.
Allan Overcast KF7FW
Link Communications, Inc.
www.link-comm.com
Kevin Custer [EMAIL PROTECTED] wrote:
F/S 120 Watt Midland UHF Continuous Duty Repeater Amplifier
This unit was our shop spare and saw about 96 hours worth of use.
It takes 5 watts to drive and puts out 120 watts.
I believe these were manufactured for Midland by TPL
The unit is rack mountable and comes with rack mount kit.
We
At 1/28/2007 06:59, you wrote:
The moment you stated that waving your hand over the controller says that
you have an RFI problem. If that controller is a board that is just meant
to go in the radio, you will need to shield it well, and possibly find out
what inside the radio is leaking RF that
At 1/28/2007 07:26, you wrote:
I will see if I can perform that test on Monday AM and post the
results. BTW, the typical propogation delay through all the controllers
is less that 5mS, so pretty fast.
..except the RLC-3 RLC-4, unless there's been very recent firmware
upgrades that have taken
Which reminds me that I should have mentioned the available scan
of club using a series of yagi antennas around a wide tower to
obtain a quasi omni pattern. You can probably find the info
on the repeater builder antenna page along with the mounting offset
paper I mentioned earlier.
skipp
I just checked the Repeater-Builder Kenwood section that discusses the
various microphone wiring schemes
http://www.repeater-builder.com/kenwood/kenwood-misc-connectors.pdf
for different Kenwood Ham rigs but, no information on commercial
radios. Does anyone on this list happen to have a schematic
Call or write to Celwave (now RFSystems) and ask them
for the cutting chart for units using RG400. Last time
I tried that, every technician I spoke with told me,
in no certain terms, that they NEVER used RG400 or
RG142, yet I have seen photos and one actual unit that
was factory fresh and
--- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED]
wrote:
Which reminds me that I should have mentioned the available scan
of club using a series of yagi antennas around a wide tower to
obtain a quasi omni pattern. You can probably find the info
on the repeater builder
However, if that is all you can get, then go for it. I have seen guys
mount a Rohn 25 type tower on the platform where the railing is, mount
the antenna on top of the tower section(s) and then the top of the
antenna will see over the top of the water tower.
Problem is, there's a fire repeater
Paul Metzger wrote:
It is a T800 Series 1 Slimline which requires the PROMs to be
programmed. I need documentation, software, and to find out what
hardware (exact models) I will need to acquire in order to program
the proms, including cables.
All it has is a single rack panel with a
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey [EMAIL PROTECTED]
wrote:
Tell us how much money you expect to spend and the group can tell
you what
you may be able to get for that amount.
Chuck - I'll try to give you some details and cost.
2@ Icom F-121, cables, setup and tuned New -
Looking for the above.
Thanks
Dave
I wasn't the one looking, but the guy that was now has the info you posted.
The original poster simply said he was looking for a repeater, cheap, then
gave no other details of what he was really looking for.
Chuck
WB2EDV
- Original Message -
From: Lyle Schultz [EMAIL PROTECTED]
To:
Thank you... (this is very interesting to me)
Kevin Custer
Allan Overcast wrote:
I will see if I can perform that test on Monday AM and post the
results. BTW, the typical propogation delay through all the
controllers is less that 5mS, so pretty fast.
Allan Overcast KF7FW
Link
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