Mike you forgot one important resource:
http://c-cor.org/echocomm/
Hi from Adam Kb2jpd
You can do a real simple repeater controller using some 555/556 timing
chips in monostable mode.Look at any Forest Mimms 555 cookbooks. He
did quite a few decent circuits.
As for the ID timer requirement, You can get any 1200 packet TNC that
has morse code ID that you can
Hello all,
I know I'm asking a loaded question.
Our club just lost our UHF antenna. The last straw was a wind storm. The make
of the antenna that was up there is unknown.
A stationmaster would be nice, but we cant afford it.
A Decibel Products DB series - I hear are maintenance nightmares.
A DB series antenna is the best choice if you install it correctly. They
will last decades if done correctly.
Paul
WB5IDM
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Steve Hutzley
Sent: Tuesday, November 28, 2006 7:59 AM
To:
During receive mode try to measure the by-passed PA DC voltage if it exists
then it may cause self oscillation within the PA disconnect this DC voltage and
see.
Aland
Nate Duehr [EMAIL PROTECTED] wrote:
Hi guys,
Built a link radio out of a MASTR II mobile a while back.
Should the same high-side injection be requested when ordering 440-450 MHz
crystals for a MICOR channel element? So far, everything has tuned up very well
just having ICM make new crystals according to the standard MICOR receiver
formula, and I always send in the channel elements to be
At 05:59 AM 11/28/06, you wrote:
Hello all,
I know I'm asking a loaded question.
Our club just lost our UHF antenna. The last straw was a wind storm.
The make of the antenna that was up there is unknown.
A stationmaster would be nice, but we cant afford it.
A Decibel Products DB series - I
If you call never having to touch it in the past 27 years as a maintenance
nightmare then, yes, I'd avoid them.
Chuck
- Original Message -
From: Steve Hutzley
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, November 28, 2006 8:59 AM
Subject: [Repeater-Builder] repeater
Sent: Monday, November 27, 2006 7:22 PM
Subject: Users Group 2 Baby Boys
OK Everyone - Sorry I have not been watching the group for the last
two weeks. I have been a little busy. On November 15th on of the
twins decided at 4:30 AM to break his water. At around 4:30 PM
Victoria and My Two
At 11/27/2006 12:26 PM, you wrote:
Hi guys,
Built a link radio out of a MASTR II mobile a while back.
444.575 TX,
447.575 RX.
It's the LO multiplier chain that you're hearing. 145.460 * 3 + 11.2 =
447.580 (447.575).
After having the link installed in my basement for a few days, I
At 11/28/2006 10:19 AM, you wrote:
You don't hear it when the radio is TXing because the T/R relay
disconnects the receiver from the antenna.
Not quite, as 145 MHz will never make it through the UHF helicals. It's
just leaking out of the RX case.
I forgot to mention: the reason you don't
Aland services wrote:
During receive mode try to measure the by-passed PA DC voltage if it
exists then it may cause self oscillation within the PA disconnect this
DC voltage and see.
Aland
Already done when the PA was by-passed, but thanks for the thought.
Nate WY0X
I forgot to mention: the reason you don't hear it on TX on an
unmodified
Mastr II is because the RX OSC 10V is cut off during TX, so
there's no RX
LO when TXing.
Bob NO6B
I don't have a manual in front of me, so I have to ask the question here.
If the 10V to the Rx oscillator board is
Not quite, as 145 MHz will never make it through the UHF
helicals. It's
just leaking out of the RX case. Neil's got the easiest
solution: order
a high-side LO xtal for your 447.575 RX.
Bob NO6B
But that will just move the problem somewhere else...up to 152.925 where you
might make
We have a number of them in operation(DB-420 and 419) both in Fl and TN. Some
up and working since 1992 with no problems.
Thanks john
- Original Message -
From: Chuck Kelsey
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, November 28, 2006 11:54 AM
Subject: Re:
At 11/28/2006 10:49 AM, you wrote:
Not quite, as 145 MHz will never make it through the UHF
helicals. It's
just leaking out of the RX case. Neil's got the easiest
solution: order
a high-side LO xtal for your 447.575 RX.
Bob NO6B
But that will just move the problem somewhere
At 11/28/2006 10:49 AM, you wrote:
I forgot to mention: the reason you don't hear it on TX on an
unmodified
Mastr II is because the RX OSC 10V is cut off during TX, so
there's no RX
LO when TXing.
Bob NO6B
I don't have a manual in front of me, so I have to ask the question here.
If
Not quite ... I believe he stated this radio package is being used at home
- reason for the problem being discussed in the first place.
The 145.45833 MHz birdie seems to be interferring with his ability to hear
a 2 meter repeater output.
A 152.925 MHz birdie may not cause
Bob Dengler wrote:
At 11/28/2006 10:49 AM, you wrote:
Not quite, as 145 MHz will never make it through the UHF
helicals. It's
just leaking out of the RX case. Neil's got the easiest
solution: order
a high-side LO xtal for your 447.575 RX.
Bob NO6B
But that will just move the problem
I have taken a UHF transmitter and combined it with a VHF receiver for
a crossband split. The very maximum deviation that I can obtain from
the radio is about 1.5 KHz. This is with the pot turn all the way
up. Mic high is being fed into a 1.0 MFD cap through a 15K resistor
to the high side
Here here!!
The 1151-2 Station Master sells for around $650 and from what I can find
on the net the HS9-43050 Hustler antenna sells for $500.
Steve, I think your closer to affording it than you think.
Do it right once and worry about it again in 20 years.
-Sean
If you're up on a rough site,
At 11/28/2006 12:23 PM, you wrote:
Bob Dengler wrote:
At 11/28/2006 10:49 AM, you wrote:
Not quite, as 145 MHz will never make it through the UHF
helicals. It's
just leaking out of the RX case. Neil's got the easiest
solution: order
a high-side LO xtal for your 447.575 RX.
Bob
At 11/28/2006 12:31 PM, you wrote:
I have taken a UHF transmitter and combined it with a VHF receiver for
a crossband split. The very maximum deviation that I can obtain from
the radio is about 1.5 KHz. This is with the pot turn all the way
up. Mic high is being fed into a 1.0 MFD cap through a
At 11/28/2006 01:06 PM, you wrote:
Nothing forgotten - the ICOM still gets 10 V, just not 10 V for the
oscillator. There are two separate 10 V feeds to the RX: one
for the LO
oscillator one for everything else.
Bob
Confused. The ICOM *is* the oscillator, and it only has one 10V
Bob, I am not all that familiar with op amp's. Do you have a diagram of
something I can try to see if it works. The 1.5 KHz might be enough allowing
the controller to maintain the rest, won't know until it is all hooked up and
running. But in my thinking, 3.0 Khz would be much better,
I have what I believe is a circulator/isolator that I would like to
identify.
It is big and heavy, meaning it measures 13W x 4 5/8H x 1 7/8D, and
weighs about 15 lbs.
The label says: Microwave Associates, a M/A Com company
Serial: 1009
Model J-210
It has
Our club's 1151-2 Station Master was installed professionally in 1990
and is still going strong. No SWR problems at all and excellent wind
rating. I'd highly recommend you spend the extra $150 for a top
notch antenna.
--- In Repeater-Builder@yahoogroups.com, Sean Fitzharris [EMAIL
Mark Tomany wrote:
I have what I believe is a circulator/isolator that I would like to
identify.
It is big and heavy, meaning it measures 13W x 4 5/8H x 1 7/8D, and
weighs about 15 lbs.
The label says: Microwave Associates, a M/A Com company
Serial: 1009
Mathew Quaife wrote:
Bob, I am not all that familiar with op amp's. Do you have a diagram of
something I can try to see if it works. The 1.5 KHz might be enough
allowing the controller to maintain the rest, won't know until it is all
hooked up and running. But in my thinking, 3.0 Khz
Hi Mathew,
You did not mention where you're picking up the audio from the VHF
RX. It should be speaker audio, that has been de-emphed. If you are
taking it from the high-side of the squelch pot (VOL-SQ HI), that is
discriminator audio, and as it has already been correctly pointed out
by
At 08:24 AM 11/28/06, you wrote:
Here here!!
The 1151-2 Station Master sells for around $650 and from what I can find
on the net the HS9-43050 Hustler antenna sells for $500.
Steve, I think your closer to affording it than you think.
Not quite. See below.
Do it right once and worry about it
In a message dated 11/28/2006 5:42:27 P.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
I just include the anti-sway arm as part of the purchase price and
consider the sum of the two as the cost of the antenna.
Mike WA6ILQ
Why spend money buying a stabilizing paddle for a
--- In Repeater-Builder@yahoogroups.com, Mark Tomany [EMAIL PROTECTED]
wrote:
I have what I believe is a circulator/isolator that I would like to
identify...
--
Microwave Associates catalog sheet shows a J2101, that measures
13.0x4.75x1.88
Specs:
If you decide you don't want/need it, I'd take it off your hands.
Write me offlist if interested.
Ken
At 03:32 PM 11/28/2006, you wrote:
I have what I believe is a circulator/isolator that I would like to
identify.
It is big and heavy, meaning it measures 13W x 4 5/8H x 1 7/8D, and
weighs
I work at a TV station that uses a Harris TV30L channel 4 TV transmitter.
It has a circulator between the visual driver and PA. It is deeper that the
one that you describe, but it uses type N fittings and is in the 70 MHz range.
The connector indicates quality in this case.
From the size, I
Why? For one thing, PVC is notorious for its lack of UV resistance, and is
prone to craze, crack, or crumble when exposed to sunlight for long periods.
Been there, done that. Some formulations of PVC have components that affect
the RF field and thereby affect the radiation pattern and/or
At 11/28/2006 14:52, you wrote:
Bob, I am not all that familiar with op amp's. Do you have a diagram of
something I can try to see if it works. The 1.5 KHz might be enough
allowing the controller to maintain the rest, won't know until it is all
hooked up and running. But in my thinking, 3.0
Most people see hustler and dismiss it as crap but I have a feeling most, if
not all people responding have never even seen a Hustler Spirit series antenna.
In comparing them to the Stationmaster type antennas I'd say they're
constructed equally well. It's a good stout commercial grade antenna
We use the DB -420 with the DB side mount with no problems.
John
- Original Message -
From: Eric Lemmon
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, November 28, 2006 9:42 PM
Subject: RE: [Repeater-Builder] repeater antenna suggestions
Why? For one thing, PVC
I'm not disagreeing with you. I am not a fan of antenna maintenance. For
those that may want to use PVC for some purpose, PVC electrical conduit is
sunlight resistant and uses less fillers in the formulation.
Gerald Pelnar WD0FYF
McPherson, Ks
- Original Message -
From: Eric Lemmon
In a message dated 11/28/2006 8:04:48 P.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
Why? For one thing, PVC is notorious for its lack of UV resistance, and is
prone to craze, crack, or crumble when exposed to sunlight for long periods.
Been there, done that. Some formulations of
There's a difference between PVC at ground level (or a few
hundred feet above it) and PVC at 5,500-6,000 feet AMSL.
The IR and UV are much more intense at 6,000 feet elevation...
You can gut a sunburn in an hour in the middle of December
while swapping antennas or mounting feedline on a tower...
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