Howdy,
Not intended to disrupt the thread here,,but on the 220 comments.
Ron KG5BZ just climbed a tower in Austin to measure loops (and spacing I
hope) on an old 220 ham cut DB product. He told me he already had the
original 220 harness specs from DB. I offered to help him get the info
Bob
I had replied and dropped the ball on checking my inventory. I just
pulled down a two bp cavity series set from a combiner down from
storage and swept one cavity. It's from sinclair and is part 4 of 5
model ctr28140. What spec do you need?
Don W5DK
Sent from my iPhone
On Feb 13, 2010,
I'll chime in.
I would definitely mount the 2nd ant low enough below the 450 ft one to
provide enough vertical separation to run without the duplexers. That way
you always have the option. 60 plus feet on vhf. Somebody can run you the
numbers if you provide station specs.
It's a trade off. DB
To everybody that did the math for Tim, we are 1 meg split here in the
country of Texas.
Tim, I have some 1 5/8 hard line if you want to make a set of notch
duplexers, probably can get you the 80% done set from a buddy.
Don Kirchner W5DK
-Original Message-
From:
You said it was a mastrII, there's a resistor on the exciter that connects
the 10v line to the MIC HI if my memory is correct. If you haven't already,
you might adjust the exciter modulation pot back n forth as somebody
mentioned.
Don Kirchner W5DK
From: Repeater-Builder@yahoogroups.com
Dang, I just found out my saved searches were missing something!!
That auction has an unusual local oscillator with those coils? I don't
remember ever seeing one before. Heard of them, just ain't seen one.
Don W5DK
From: Repeater-Builder@yahoogroups.com
I'm not far from Tim and have been emailing with him offline.
Yesterday he disconnected the rx from the duplexer, terminated the rx port
of the duplexer and injected weak signal directly into the receiver. He did
not remove any original cables between the rx and duplexer, so he simply
divided the
Tim, did you happen to try the dummy at the end of the feed line instead of
antenna? Are you sure the connector from the 7/8 to the duplexer (or any
connector / adapter near that connection) is good? Did you put all the
covers back on during the antenna test?
You're getting closer!
Don W5DK
Some of the sites are not as secure as they look from the street.
If you get pressured to leave just point out Homeland Security expects Hams
to help them when it gets bad.
http://www.arrl.org/news/stories/2006/10/04/100/?nc=1
http://www.nationalterroralert.com/communications/
I have never met Jeff or crimped RF connectors but now I feel like an
expert!
Thanks Jeff.
Don Kirchner W5DK
Tim,
If you're just using it for control, you only need to receive on uhf. Just
put up the 224 for the duplex vhf on the one feed line. Downstairs use a
diplexer to pull off your uhf control receiver signal. It should work fine
at that location. We used to have a short link path to a site like
Dave,
The component differences may be detailed out in the LBI's for the 77 or 88
split models. But, just trade somebody the receiver front end/LO and exciter
from an 88 split. Your 77 is less common. Easy change out then align and
you're going.
73
Don W5DK
-Original Message-
From:
Yesterday, with a buddy, I attempted to tune my first set of hybrid ring
duplexers. I have successfully tuned many sets of duplexers and didn't
expect to have any trouble with a minor freq move. I have read and
understand the theory behind the design.
Yes, be careful not to strip any screws when you try to get the back/bottom
open. He was saying it takes allot of heat to get the helical coil
unsoldered from the side of the casting (once you have it open you will
see). I have used a propane torch setting stationary on a bench while
holding the
Aaron,
Howdy again neighbor! Don't start spreading rumors that its flat in Texas,
it's all downhill to the beach.on second thought it IS flat and the
water is bad
Are these the cavities I tuned for you last fall? If so guys these are
typical specs for 4 cans BPBR. Sorry but I
.
--- In Repeater-Builder@yahoogroups.com, de W5DK w...@... wrote:
Aaron,
Howdy again neighbor! Don't start spreading rumors that its flat in Texas,
it's all downhill to the beach.on second thought it IS flat and the
water is bad
Are these the cavities I tuned for you last fall? If so guys
I did see Paul's reply also Nate,, I'm betting if he had some of those
spurious products with the numbers he has given, they would be too small to
see with even the best gear. I had a similar noise level issue that turned
out to be an amp and I couldn't see squat with my HP8921a, (weak S/A) but I
We have 3 sets of the W1GAN duplexers here in San Antonio that I know of
(San Antonio Repeater Organization), 2 on the air and one in a backup
cabinet. I'm curious how many others are out there in service. I wasn't
around when they were built but I was told ours were silver plated.
Don
Morse's Birthday. Needs _.._. ._. to make the thread repeater related.
Don W5DK
I would be curious to hear what temperature response you get. We are on a
site owned by CC and need to do some feed line / ant work and need to make a
first time contact after they acquired the site
Don Kirchner W5DK
From: Repeater-Builder@yahoogroups.com
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of n...@no6b.com
Sent: Tuesday, March 31, 2009 12:05 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Anyone ever used this repeater controller?
At
I think Jeff was correct earlier, while the front end casting / helicals of
the receivers are the same, the LO/ If / audio is mechanically different and
are not plug compatible.
73
Don Kirchner W5DK
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf
Frank,
I don't think you'll find a specific instruction for these models and not
sure exactly your starting point so first set up cables like this.
http://www.repeater-builder.com/wacom/wp678-665-uhf-tuninginstructions.pdf
its best to terminate all 3 ports of the duplexer with 3 or 6 db pads
I have seen problems with using analyzers on dipole arrays, hopefully the
bridge will give you a better report. Also might be an open connector as
mentioned.
Don Kirchner
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ian Miller
Sent: Friday, September 05,
I just tuned a set of these T1500s Sunday night, I've seen them before but
never had a need to tune a set till now. Adjusting the notches wasn't fun. I
had seen Eric's note regarding sealing the holes and considered putting some
silver/ aluminum duct tape used in HVAC over those slots when done
I would be asking the tech or shop what the before and after tuning specs
were. I see the receipt note said they are now near wacom specs. But how
close were they to start with?
Kinda like a car alignment its fixed, pay here
73
Don Kirchner W5DK
From:
Refrain,,,theres nothing more to add. Sounds like trouble anyways. I
type stuff all the time then never hit send.
License class means nothing.
So who else drained a liter of water from a 600ft air dielectric hard
line today? Who wants the video?
Don w5dk
Not a list admin
Good help is hard to find in every trade nowadays. I could have done without
the adult day care angle, we all see it every day with current work ethics
and morals. They could have done the industry a better service with more
facts and public service links to safety training.
I think it
-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of de W5DK
Sent: Tuesday, July 08, 2008 11:47 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Re: New Repeater Desense Problems
I think he was Laryn. I could see an argument that it may
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Nate Duehr
On Jul 8, 2008, at 9:47 PM, de W5DK wrote:
We were getting ready to replace the antenna at 580 ft and spend
some money after the dummy load test. Luckily the amp finished
failing. What I relayed
Perfect! except you want the antenna as high as possible! Hi
73
Don
W5DK
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of John Transue
Sent: Wednesday, July 09, 2008 2:18 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Measuring Desense
Not to hijack the thread, but a dummy load is NOT always a perfect test to
eliminate the equipment. I think it’s a good start though.
I just solved a situation where I had 15 db desense into a 600ft feedline /
antenna and ZERO desense into a dummy load. This was using a sample slug ( same
I think he was Laryn. I could see an argument that it may not have been
aligned and caused the situation. But,,
In this case the matching circuit was installed and set properly, also the
duplexers and all were perfect. The system was stable for years then boom,
desense.
All I was saying
No, you will only see the peak and skirts of the generated signal, you need to
terminate all the duplexer ports with 3db 50 ohm pads and tune for pass first,
lock those down them tune the reject path
Bottom of first link is a sketch.
73
Don W5DK
to
obtain a set of duplexer tuned to a specific frequency.
v44kai.Joel.
- Original Message -
From: de W5DK mailto:[EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, June 26, 2008 11:40 AM
Subject: RE: [Repeater-Builder] Help! Duplexer setup
Scott,
As Ron has mentioned you could use a talking meter or adjust for max noise on
the pass circuits and min on the reject. But the human ear will not be near as
accurate as you want and need. (especially after the years of loud music on
marshall amplifiers, and the thousands of rounds
Bob,
How much noise? I have a current situation at 580 ft. I'm diagnosing.
Station works fine into a dummy load tested with a sampler slug and no
desense. Add the feedline and antenna and I get 15db degradation. I have
looked at the freqs the ant is hearing and don't see an IMD issue.
Thanks Bob
Reducing power was no measured help till I got to minimal watts and
unfortunately there are no extra VHF band antennas to try (unless I borrow
one from the GOV or the TX highway patrol or state park folks) I guess I
won't try those feed lines/antennas. J
73
Don W5DK
From:
Keith,
The “kit” from NHRC is just the board and a few parts (a pic and the dtmf
decoder) they don’t included the small parts or even the 1420. Order the 1420
from them while you’re at it.
http://www.nhrc.net/nhrc-2/
73
Don Kirchner W5DK
On Wed, May 28, 2008 at 10:23
de W5DK wrote:
Nate,
Thanks for the info, I have 4 or 5 clean 4076s that won't go below
444/449 and still look good separation wise. I had made a call about 6
months ago and was told the cables were all the same but the loops are
slightly longer on ones spec'd in the ham band. (wonder
Nate,
Thanks for the info, I have 4 or 5 clean 4076s that won't go below 444/449
and still look good separation wise. I had made a call about 6 months ago
and was told the cables were all the same but the loops are slightly longer
on ones spec'd in the ham band. (wonder were those notes are
Dave, I still have a few 5 meg split sinclairs, qe they might be a
better application. Are those the exact freqs? I'll try tuning a set
73
Don W5DK
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of ve7ltd
Sent: Tuesday, April 01, 2008 5:32 PM
To:
47/48 is for single freq stations, do you have 68/69 cut? Are you sure the
decoder is good?
Pin 3 enable/disables the decoder, pin 5 activates rx mute to squelch the rec
and RUS when no sub tone is detected. Pin 4 is 10v for reference.
73
Don W5DK
From:
The “A” had the handle on the front of the unit, you have to be real tall or
have short arms to carry it and not break the legs off. Also the A had a
position switch to dial up or down the freq, fast or slow. The later (C,D
maybe) models had a VFO style with a small knob to help you dial. The
Norman,
Ralph's info is on but the only jumpers to worry about will be on the system
board, not on the 10 volt card I'm pretty sure. There's one just to the
right of where you plugged the long decoder in that has be cut open.
Once working you will notice the speaker audio will go away without
Kinda harsh with the common sense card Randy, maybe you didn't intend it the
way it read. Thanks for helping him out though. Everybody starts somewhere.
73
Don W5DK
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Randy
Sent: Thursday, January 24, 2008 4:43 PM
Jim,
Going from memory here. Just to the right of the screen there are 6 buttons
marked rx test, tx test etc, might be circled in an analog area those are
straight up what they're marked. Then there's a shift blue button left of
those that make those analog buttons change to the blue description
Brian,
You described it as not decoding but then say the audio is routed around
the PL board.?
So with the decoder installed can you roll the squelch open and still hear
the speaker? If so the decoder is not getting a signal to RX mute.
Just to the right of where the decoder plugs in
Be a 501c3 organization with insurance. Get a letter from the local NOAA
office stating how the hams help during weather disasters. If you do
community service for walks, runs and bike rides(heart association, ADA.
Etc) get a letter from them also. Be professional and write a letter. Tell
them you
Is
http://geo.yahoo.com/serv?s=97359714/grpId=104168/grpspId=1705063108/msgId=
75983/stime=1192802374/nc1=4025373/nc2=4776371/nc3=4836037 I have a couple
of vhf PLL exciters that are missing the band pass filter and audio
processing daughter boards. If anybody has a few to spare please
No, that black coax is plugged into the normal connection when no preamp is
installed, the preamp would be in the hole/area to the left of that RCA
termination you have now, you do NOT have a preamp in that mobile.
73
Don W5DK
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED]
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