At 10:20 PM 02/23/07, you wrote:
PL is no cure for interference or desence, it just hides it until
someone actually tries to use the repeater.
Yep. All the more reason to require PL'd inputs and make sure that
systems don't have compatible PL tones with the one on the reverse...
I never
Keep in mind that a Z-Matcher in a GE radio has it's own test point to tune it,
as do some other Z-Matchers. You don't need to use a wattmeter and worry about
the line length.
Chuck
WB2EDV
- Original Message -
From: Mike Morris WA6ILQ
To: Repeater-Builder@yahoogroups.com
Yes, and as the article referenced below points out, switching the UHF
Mastr II to High Side Injection eliminates the problem.
We originally thought that HSI eliminated the problem totally on 220,
but it didn't, there is an overlapping range that one side or the other
doesn't fix; that is what
[EMAIL PROTECTED] wrote:
In a message dated 2/23/2007 6:36:24 P.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
In my most critical applications, I use permanent in-line Bird
samplers. Then, cabling lengths don't change because I don't
remove the samplers; and you know exactly
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey [EMAIL PROTECTED]
wrote:
Keep in mind that a Z-Matcher in a GE radio has it's own test point
to tune it, as do some other Z-Matchers.
True, there is a test point. And you can tune the two capacitors and
stretch/squeeze the coil for a
Since both the previous mentioned north/south reverse co-channel
repeaters are owned by a few mule heads... I simply wrote a macro
to place the repeater in ctcss for a time after a 30 second time
out. Members normally encode tx ctcss (sub tone) so they don't even
notice the change. The band
Along a similar theme we actually changed the IF Frequency to
get rid of a receiver image and injection problem. Com Spec
sells replacement IF Crystal Filter kits if you're up to the
task.
T'was the only real fix we could muster for a 222MHz receiver that
enjoyed both an image and birdie
So would/should we actually call the below problem desense, blocking
or capture of the repeater receiver?
s.
Years ago an upside down repeater in New Mexico on the intertie using
PL access would regularly be de-sensed by one in Texas 300 miles away
in the spring with the enhanced
--- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote:
So would/should we actually call the below problem desense, blocking
or capture of the repeater receiver?
s.
Using desense here is misleading.
Blocking, to me, is SEVERE desense.
Capture could work, if the
I never suggested that the cable between the TX and the
duplexer had to be an exact length and if the TX output is a
true 50 ohms then any cable length produces no consequence at
the cavity input. But if the TX impedance is not 50 ohms, I
think any cable length other than half wave will
Mike and all,
Here's another item to add to the capacitor page. It's for those who've
wondered why an X7R ceramic cap is better'n a Z5U ceramic cap...
73,
Bob, WA9FBO
_www.scomcontrollers.com_ (http://www.scomcontrollers.com)
EIA Three Digit TC Codes for Ceramic Capacitors
Low
Now, where did I put those plans for a single-frequency rptr? LOL
73,
Dick W1NMZ
- Original Message -
From: Mike Morris WA6ILQ [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: 23 February, 2007 16:03
Subject: Re: [Repeater-Builder] 440-450 band plan (The normal North vs So
You laugh, but with the use of Time Division Multiplex it may be possible to
transmit and receive on the same frequency in different time slots. It may not
be that far fetched.
73, Joe, k1ike
-- Original message --
From: Dick [EMAIL PROTECTED]
Now, where did I put
Yup...it's already being done on some of the military stuff I work with...TDMA
CDMA
73,
Dick
- Original Message -
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: 24 February, 2007 15:07
Subject: Re: [Repeater-Builder] 440-450 band plan (The normal North vs So Cal
--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote:
You laugh, but with the use of Time Division Multiplex it may be
possible to transmit and receive on the same frequency in different
time slots. It may not be that far fetched.
That would be an intriguing device.
I'm sure
http://www.repeater-builder.com/msr2k/msr2k-trn5075A-PL-encoder-decoder.pdf
http://www.repeater-builder.com/mitrek/mitrek-index.html
Hope this helps
- Original Message -
From: kk2ed
To: Repeater-Builder@yahoogroups.com
Sent: Friday, February 16, 2007 12:42 PM
Subject:
Does anybody have info on this radio? Specifically I am looking for where to
get COR/PTT/AUDIO to use this as a link radio. Any help is appreciated.
Thanks
Andy KC2GOW
http://www.sirepeater.com
I have 2 Hi Pro 220 MHz repeaters, one I bought used (R1) and one new (E). No
problems for many years. One has the Cat 200B controller, the other the 300DX.
I started with a Spec Comm. in 1980 ( I did not know any better!) and over its
first few years of life, the RX went south (repaired once)
Well, I was given an interesting box today to see if it can
be moved to an amateur channel...
It has a Spectrum receiver (on 469.0625 !) and a Hamtronics
TA451 transmitter (!) in it, along with a Zetron Model 37
Repeaterman (part number on the bottom is 901-9241) and
a Model 40 Worldpatch
--- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ
[EMAIL PROTECTED] wrote:
and
a Model 40 Worldpatch (901-9193).
Does anybody have a paper or PDF manual on the Zetrons?
I think I'm going to replace the radio side with something a bit
different.
Mike
Mike, that would be a
At 10:02 PM 02/24/07, you wrote:
--- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ
[EMAIL PROTECTED] wrote:
and
a Model 40 Worldpatch (901-9193).
Does anybody have a paper or PDF manual on the Zetrons?
I think I'm going to replace the radio side with something a bit
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