Hello Freddy,
Have you tried to tune it to your frequency? You may not need to cut
the inner tuning rod, as it just may have enough travel to go to your
frequency. It's worth a shot. My 42MHz cans went to 53Mhz with no
problems. The loops will probably need to be modified.
73, Joe, K1ike
hey Joe Yes I have tried that and it will only go to 42mhz They are 35mhz to
40mhz cans and they will only go to 42mhz. The tuning rod is not the real
problem I have it out and all I will need to do is cut more threads on the
threaded rod so it will unscrew further up the can but the cooper
Here's a weird one. I have my ideas, but I need to bounce it off a couple
brains bigger than mine.
APRS on 144.39, and FM Voice repeater at 147.24/147.84. Antennas are identical
Telewave 4-bay stacked dipole. Both antennas are horizontal to each other, and
roughly two wavelengths from each
The Icoms have been taken, thank you.
--- In Repeater-Builder@yahoogroups.com, motarolla_doctor echoco...@...
wrote:
I just found two more Icoms with sockets. 4EG25A10 on 455.85 and 455.45
I have 3 pair of GE IComs that I do not need. These were pulled from
working radios.
3
Hi Folks,
I need the following:
1 Vibrasender (TX) KLN6210A/TLN6824A 141.3 Hz
1 Vibrasponder (RX) TLN8381A 186.2 Hz
I have bunches of the Sender reeds:
100.0, 123.0, 151.4, 206.5.
Thanks,
Tim
tim
i have both $5 ea + post $4
sorry no trades these days.
mdm ted
I have a short grundle (which is less than a ton) of these and no radios into
which they fit.
$8 per pair + post probably have 25-30 pr. - ship anywhere. i'd like to avoid
paypal if at all possible.
part of the proceeds from the sale of these will go toward myRepeater-Builder
donation so lets
First of all you do not have enough isolation between antennas with only two
wavelenghts horizonal seperation. A single bandpass cavity will not be enough.
I would try 2 bandpass/bandreject cavities. Reject set for the TX freq and the
other set for the RX freq. I believe that RF from your
Can you receive through a circulator without heavy losses? I've never tried
it...
- Original Message -
From: David
To: Repeater-Builder@yahoogroups.com
Sent: Monday, November 02, 2009 1:31 PM
Subject: [Repeater-Builder] Re: Weird Interference between APRS and 2-M
repeater
You will have 20dB-30dB loss from antenna to transmit port. About the only
way to implement a circulator in a half duplex radio is to tap the PA board
before the T/R switch, and if it is PIN diodes, it still may create a mix.
On Mon, Nov 2, 2009 at 1:40 PM, Paul Plack pl...@xmission.com wrote:
I believe you are right. Simplex is difficult with a circulater.
David Epley, N9CZV
Can you receive through a circulator without heavy losses? I've never
tried it...
- Original Message -
From: David
To: Repeater-Builder@yahoogroups.com
Sent: Monday, November 02, 2009
Ted have any for 118.8., for the MSR repeater
Jerry VE3 EXT
Hi Ted,
Which reeds are they?
TIM
--- On Mon, 11/2/09, Ted Bleiman K9MDM - MDM Radio k9...@yahoo.com wrote:
From: Ted Bleiman K9MDM - MDM Radio k9...@yahoo.com
Subject: Re: [Repeater-Builder] Tone Reeds Needed (swap?)
To: Repeater-Builder@yahoogroups.com
Date: Monday, November 2, 2009, 12:17 PM
Looking at some DB Products fiberglass radome antennas, they all have a
metal protrusion on the top cap; it looks like bronze perhaps. I presume
that it is some form of lightning mitigation device. Is this just a piece of
metal in the cap, unattached to the internal antenna element?
I'm curious
On Mon, 2 Nov 2009, bullmus wrote:
APRS on 144.39, and FM Voice repeater at 147.24/147.84. Antennas are
identical Telewave 4-bay stacked dipole. Both antennas are horizontal
to each other, and roughly two wavelengths from each other center loop
to center loop.
We discovered the problem
On Mon, 2 Nov 2009, dep...@starband.net wrote:
I believe you are right. Simplex is difficult with a circulater.
Can you receive through a circulator without heavy losses? I've never
tried it...
Older Micor mobiles had a built-in circulator and a T/R relay.
--
Kris Kirby, KE4AHR
Only on UHF. VHF was a lowpass filter.
Kris Kirby wrote:
On Mon, 2 Nov 2009, dep...@starband.net mailto:depley%40starband.net
wrote:
I believe you are right. Simplex is difficult with a circulater.
Can you receive through a circulator without heavy losses? I've never
tried it...
At 12:31 PM 11/2/2009, David wrote:
Most people used a simple mobile for aprs which creates alot of
headaches where several transmitters are used. They just dont have
the filtering needed for this application. You should also use a
circulator on your aprs radio. This will help keep RF out of
I am a firm believer that anyone who deploys ANY transmitter on
a mountaintop (or any multi transmitter site) should be shot.
---Darn it.. What I meant is that I am a firm believer that anyone
who deploys ANY transmitter on a mountaintop (or any multi
transmitter site) WITHOUT A
I do it all the time in a test jig to set up mobile
vehicle repeaters. Helps protect the non power term
ports of a Service Monitor.
You'd be surprised how much you can hear through it...
s.
Paul Plack pl...@... wrote:
Can you receive through a Circulator without heavy
losses? I've
I guess there are some sites noisy enough that losing 30 dB wouldn't affect
S/N... ;^)
- Original Message -
From: skipp025
To: Repeater-Builder@yahoogroups.com
Sent: Monday, November 02, 2009 4:29 PM
Subject: [Repeater-Builder] Re: Weird Interference between APRS and 2-M
Although I've never had one apart, I believe the cap is attached to the
radiating element. Also, I have never seen any fiberglass collinear antenna
survive a direct hit. I have, however, seen folded dipole arrays survive a
lightning strike.
Chuck
WB2EDV
- Original Message -
From:
Re: Fun wav/mp3 Telco files for your repeater controller
http://www.payphone-directory.org/sounds.html
enjoy,
s.
I was told by someone that took an antenna out of the radome that there did
not appear to be any connection to the conductor on the cap. The antenna
slid right out of the bottom of the radome.
I agree about the survivability of folded dipole arrays, but they don't seem
to be an option at 900
On most fiberglass omnis, the lighting spike at the top is an extension of
the last element in the array which is actually a shorted quarter-wave
section. This shorted quarter-wave section at the far end of the radiator
serves to put the entire antenna at DC ground.
Some of the cheaper
I haven't seen any for that band either, but don't know what they utilize for
the various panel antennas that are covered with a radome. TX/RX makes a
vertical that has integral folded dipoles and an aluminum extrusion goes all
the way to the tip of the antenna for lightning. I suspect it might
At 03:44 PM 11/2/2009, skipp025 wrote:
Re: Fun wav/mp3 Telco files for your repeater controller
I notice the one(s) from Hawaiin Tel aren't listed.
Ones like:
Da kine! Da wahine you call no stay dere. Shootz!
Eh, wat u t'ink. You no need one quarta' fo' make call?
I was disappointed to
Thanks for the input folks!
I missed a couple critical pieces of information that are about to get me shot!
;-)
Our FM Voice repeater is running through a 6-cavity duplexer. The APRS setup
had a single cavity, tuned to the 144.39 APRS frequency. I am assuming this
single cavity is acting
Thanks for the input.
I missed a couple critical pieces of information. The FM Voice repeater
is running through a 6-cavity duplexer. The APRS setup had a single
cavity, tuned to the 144.39 APRS frequency. I am assuming this single
cavity is acting as a low pass filter to prevent the voice
Jason Parks wrote:
Noise and desense are one thing, but the popping and crackling when trying to
hook the antenna to a powered
off radio,
I'm assuming that the popping and crackling that you are hearing is on
the active repeater? If so, that is what one can expect if you change
things in
I just looked at the TX/RX catalog - looks like you're referring to their CC
Series antennas; the description indicate that the lightning spike (their
term) is connected to a solid brass support pipe. They're not made for 900
MHz though, only UHF/700/800. Looks like the price for the 6dB gain
At 04:40 PM 11/2/2009, Joe wrote:
The repeater might be getting into the PA stage of the APRS radio. Try
powering off the APRS radio during the time that you hear the weird
noise. I would bet that the noise goes away as soon as the APRS radio
in powered off.
---Power is irrelevant as the PA
The repeater might be getting into the PA stage of the APRS
radio. Try
powering off the APRS radio during the time that you hear the weird
noise. I would bet that the noise goes away as soon as the APRS radio
in powered off.
What kind of radio is being used for APRS? If it's something
Is it just possible that it's for corona discharge :)
John
Doug,
Not sure how soon you need this antenna, but if you have time to wait - go
to Dayton next year. There has been a guy there the past two years selling
RFS/Cellwave Super Stationmaster antennas. DEFINITELY commercial-grade. I
bought one 2 years ago from the guy (I wish I could remember
Mark:
I could probably come up with a used 9dB DB Products antenna, but for this
application, weight is a MAJOR factor. A DB-809 is around 25 pounds and a
DB-589 is still about 11 pounds. The 5dB gain Maxrad MFB9155 is less than 2
pounds.
This is going on top of a 24' mast that is on top
Ah, OK Doug. I understand your project better now. I'm sure you'll find
something that'll fit your needs. and you can keep the Super Stationmaster
in mind for the new tower later. ;-)
73, Mark - N9WYS
From: Repeater-Builder@yahoogroups.com On Behalf Of Doug Rehman
Mark:
I could
Ken,
I have to agree with you on this one.
Mike Mullarkey K7PFJ
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ken Arck
Sent: Monday, November 02, 2009 4:30 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder]
Anyone here programmed these Icom F420 radios. I cannot seem to get them to
play in the 440 area. I have all the software and cables but sure am missing a
step somewhere. I program a high and low freq such as 440 and 470. I try to
set the pll voltage using this and can only get 7.75 volts no
Seems you radios are probably -9's (400-430Mhz). They can be retuned up to
around 450Mhz. There's a procedure discussed on the mods.dk website. You'll
have to program several channels throughout the amateur band then use the
service mode of the software to access the soft tuning tools. Not too
I agree about the survivability of folded dipole arrays, but they don't seem
to be an option at 900 MHz- at least I don't see them in commercial catalogs
and have never encountered an 800 or 900 MHz.
Telewave makes them...
http://www.telewave.com/pdf/TWDS-7019.pdf
Laryn K8TVZ
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