I'm looking for a simple way to "repeat" packets heard on a VHF frequency
and retransmit on UHF (and vice versa)
I don't want to set it up as a digipeater. Just a simple audio, "what goes
in one end goes out the other" audio repeater.
It would be a simple task just to hook up two radios as a cross band
repeater, but COR-PTT response time will lop off first few bytes of data.
I have considered using a digital delay circuit to delay AF until such time
as transmitter comes up to full power, and I've also considered a using a
pair of TNC's connected to PC comm ports, and delaying read of receive comm
port buffer by enough time to allow transmitter to come up to full power.
But before I do anything, I wanted to see if anyone else has had any luck
with other ideas, before I reinvent the wheel.
Thanks in advance ...
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Tuesday, February 22, 2005 8:48 PM
Subject: [Repeater-Builder] Digest Number 2989
There are 16 messages in this issue.
Topics in this digest:
1. Re: Choosing Commercial UHF Repeater
From: Eric Lemmon <[EMAIL PROTECTED]>
2. Zetron 38Max Question
From: "bretb9" <[EMAIL PROTECTED]>
3. Comm Spec TP-38
From: "Brent" <[EMAIL PROTECTED]>
4. Re: Zetron 38Max Question
From: XE2SI <[EMAIL PROTECTED]>
5. Re: Kenwood TRK-820 info?
From: Mike Morris WA6ILQ <[EMAIL PROTECTED]>
6. Re: Re: M2 CAS
From: "Fred Seamans" <[EMAIL PROTECTED]>
7. Re: Re: M2 CAS
From: Joe <[EMAIL PROTECTED]>
8. Remote Receivers and Optimal Use of CTCSS
From: "Bob" <[EMAIL PROTECTED]>
9. Re: Remote Receivers and Optimal Use of CTCSS
From: "Jim B." <[EMAIL PROTECTED]>
10. Re: Re: M2 CAS
From: "Fred Seamans" <[EMAIL PROTECTED]>
11. Re: Comm Spec TP-38
From: "skipp025" <[EMAIL PROTECTED]>
12. RE: Re: Comm Spec TP-38
From: "Rogers, Ron" <[EMAIL PROTECTED]>
13. Re: tpl amps, not so broad-band
From: "skipp025" <[EMAIL PROTECTED]>
14. FS Kenwood TK-840 K3 403-430mhz NIB
From: "na6df" <[EMAIL PROTECTED]>
15. Re: FS Kenwood TK-840 K3 403-430mhz NIB
From: Ken Arck <[EMAIL PROTECTED]>
16. Re: Re: Comm Spec TP-38
From: "Brent" <[EMAIL PROTECTED]>
________________________________________________________________________
________________________________________________________________________
Message: 1
Date: Mon, 21 Feb 2005 18:34:22 -0800
From: Eric Lemmon <[EMAIL PROTECTED]>
Subject: Re: Choosing Commercial UHF Repeater
Perhaps the best answer is to see what the public-safety agencies use at
sites with several dozen UHF repeaters within a few hundred meters. In
my area of Central California, the most common repeaters are Motorola
Quantar and MTR2000, or Kenwood TKR-840. The brand of the repeater used
is driven by the brand of mobile and portable radios being used, since a
Kenwood mobile radio will not mute quietly on a Motorola repeater, and
(except for the Professional Series radios) vice-versa. While many GE,
Vertex, and Icom radios will mute quietly on a Kenwood repeater, that is
not a "given."
While selecting top-quality equipment is important, there is a great
deal of engineering that must go into the design of a repeater at a
dense site. Logical placement of antennas is important; you don't want
to put your antenna right next to an antenna that has a harmonic or
subharmonic relationship to yours.
My personal preference is to use large-diameter cavity bandpass filters
on both RX and TX, double or triple ferrite circulators on TX, and
nothing but double-shielded cable or hardline throughout. The Number
One Rule is that nothing but an on-frequency signal can get into my
receiver, and nothing but an on-frequency signal leaves my transmitter.
In an ideal world, all of the repeaters at a dense site would be
designed to follow this Rule. Alas, such is not the case...
73, Eric Lemmon WB6FLY
mbloom0947 wrote:
I suspect that many of the participants here have had experience
selecting UHF repeaters for high-RF applications such as at
broadcasting sites. Which would you buy and why? Yaesu/Vertex,
ICOM, Kenwood, or some Motorola type? At present I am using a pair
of Moto GM300s with a RICK controller.
Yahoo! Groups Links
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________________________________________________________________________
Message: 2
Date: Tue, 22 Feb 2005 03:56:18 -0000
From: "bretb9" <[EMAIL PROTECTED]>
Subject: Zetron 38Max Question
Hello,
I picked up a Zetron 38 Max repeater controller at a hamfest and
the seller did not know the password. The default does not work. Is
there a hardware reset I can perform to reset to default values ? I am
accessing the controller via RS232
Thanks,
Bret
________________________________________________________________________
________________________________________________________________________
Message: 3
Date: Mon, 21 Feb 2005 22:36:24 -0600
From: "Brent" <[EMAIL PROTECTED]>
Subject: Comm Spec TP-38
Question...
Has anybody had a problem with the Communications Specialists TP-38 Tone
Panel not decoding PL tones about 100.0hz
it decodes from below 100.0 just fine and 100.0 but 100.0 is little slow
decoding but above 100.0 it just does nothing..
Thanks
Brent
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Message: 4
Date: Mon, 21 Feb 2005 21:09:13 -0800
From: XE2SI <[EMAIL PROTECTED]>
Subject: Re: Zetron 38Max Question
The manual says, page 4-61 :
with DTMF send 3282# 2532# Will clear all memory, and setup default
settings.
Hope this helps.
Juan
----- Original Message -----
From: bretb9
To: [email protected]
Sent: Monday, February 21, 2005 7:56 PM
Subject: [Repeater-Builder] Zetron 38Max Question
Hello,
I picked up a Zetron 38 Max repeater controller at a hamfest and
the seller did not know the password. The default does not work. Is
there a hardware reset I can perform to reset to default values ? I am
accessing the controller via RS232
Thanks,
Bret
Yahoo! Groups Links
[This message contained attachments]
________________________________________________________________________
________________________________________________________________________
Message: 5
Date: Tue, 22 Feb 2005 01:23:13 -0800
From: Mike Morris WA6ILQ <[EMAIL PROTECTED]>
Subject: Re: Kenwood TRK-820 info?
At 04:22 AM 2/20/05, you wrote:
Going thru the club eqipment the other day and found a Kenwood TRK-
820 UHF repeater. Any one have any information on this unit? TNX
WB9PAR
Have you tried the Kenwood page at www.repeater-builder.com ?
I'd start there then order the manual from a Kenwood 2-way dealer
(there are a few on this yahoogroup). If you can't find a dealer send
me a private email and I'll point you at a good one.
If you are going to need any ongoing support you really need to
develop a relationship with a dealer, and you can start with buying a
manual, which you need anyway.
Note that while the repeater is synthesized in the exciter and
local oscillator, the other stages still need to be tuned for your
frequency.
Mike WA6ILQ
________________________________________________________________________
________________________________________________________________________
Message: 6
Date: Tue, 22 Feb 2005 07:03:22 -0600
From: "Fred Seamans" <[EMAIL PROTECTED]>
Subject: Re: Re: M2 CAS
For those of you that are just beginning to experiment with repeater
building, try using a little common sense. The manufactures would not have
invested a lot of money in shielding and bypass caps if they thought they
could get by with less. The MII "M" series mobile was never intended to be
used as a repeater. Just because it works on some frequencies does not
mean
it will work on all frequencies. There is only plastic between the Tx and
Rx
and many common leads between the Tx and Rx. The MII "E" series was
designed
to function as a low power repeater with the Tx in the lower portion and
the
Rx in the upper portion. This provides some additional isolation between
Tx
and Rx. It does not eliminate the problem birdies that occur with all
types
of sets nor the leaky RF paths between the Tx and Rx. Possible elimination
procedures are High Side Rx injection, swap out the IFAS and Hi IF boards
for ones with a different IF, use more by pass caps, etc.
Examine the MII repeater chassis; all leads into the RF portion of the Tx
and Rx are bypassed with the older MASTR Pro connectors; there is plenty
of
shielding between the RF sections.
If you want a good working repeater, take the time and invest some money
in
the proper equipment.
Fred
W5VAY
----- Original Message -----
From: "Jim B." <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, February 21, 2005 10:25 AM
Subject: Re: [Repeater-Builder] Re: M2 CAS
Henry Clark, KC4KZT wrote:
Add me to the list who could not get a 443/448 pair to duplex in the
same chassis.
Nothing I tried would ever work. Waaaaay too much desense. That was
about 5 years
ago, and I remember someone saying then that 443/448 was a mission,
and for some
unknown reason would not duplex efficiently in the Mastr II chassis.
I remember this coming up a few years ago-wasn't it a case of the LO in
the receiver getting close to the same freq as the tx (or one of the
multiplier stages?), and in a duplex app, the tx freq was getting into
the IF of the rx...or something like that...
--
Jim Barbour
WD8CHL
Yahoo! Groups Links
________________________________________________________________________
________________________________________________________________________
Message: 7
Date: Tue, 22 Feb 2005 10:58:08 -0500
From: Joe <[EMAIL PROTECTED]>
Subject: Re: Re: M2 CAS
Hello Fred,
Very good points. Question, have you successfully used an IFAS with a
different IF frequency without modifications?
Joe, K1ke
---- Fred Seamans <[EMAIL PROTECTED]> wrote:
=============
.... Possible elimination
procedures are High Side Rx injection, swap out the IFAS and Hi IF boards
for ones with a different IF, use more by pass caps, etc.
________________________________________________________________________
________________________________________________________________________
Message: 8
Date: Tue, 22 Feb 2005 16:51:22 -0000
From: "Bob" <[EMAIL PROTECTED]>
Subject: Remote Receivers and Optimal Use of CTCSS
Another in my periodic series of questions dealing with "best
practices" (dontcha love bidness buzzwords?!) regarding remote
receivers:
In a system using remote receivers RF-linked back to a voter at the
main site, should each satellite (remote receiver, that is,
not "orbiting body") strip out and regenerate PL, or is it sufficient
to simply let PL pass through and let all decoding occur at the main
site? Assume "flat" audio throughout.
Tnx es 73 de Bob
K5IQ
________________________________________________________________________
________________________________________________________________________
Message: 9
Date: Tue, 22 Feb 2005 12:09:21 -0500
From: "Jim B." <[EMAIL PROTECTED]>
Subject: Re: Remote Receivers and Optimal Use of CTCSS
Bob wrote:
Another in my periodic series of questions dealing with "best
practices" (dontcha love bidness buzzwords?!) regarding remote
receivers:
In a system using remote receivers RF-linked back to a voter at the
main site, should each satellite (remote receiver, that is,
not "orbiting body") strip out and regenerate PL, or is it sufficient
to simply let PL pass through and let all decoding occur at the main
site? Assume "flat" audio throughout.
Tnx es 73 de Bob
K5IQ
That's how many repeaters here work, and it works fine. Besides the
obvious advantage of having only one decoder (less hardware), the fact
that you only have one decoder means access time is quicker. The more
decoders that have to open to bring up the repeater, the longer it will
take to bring it up.
It's probably also easier to match up the audio response and levels
between the receivers, especially if you have an on-site rx that is
hardwired.
--
Jim Barbour
WD8CHL
________________________________________________________________________
________________________________________________________________________
Message: 10
Date: Tue, 22 Feb 2005 11:19:22 -0600
From: "Fred Seamans" <[EMAIL PROTECTED]>
Subject: Re: Re: M2 CAS
The 30 to 50 MHz can be changed with out mods, however the VHF and UHF
sets
require extensive mods to the IF/Filter board. The IFAS boards are not
different except for the Xtal filters.
Fred
W5VAY
----- Original Message -----
From: "Joe" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, February 22, 2005 9:58 AM
Subject: Re: [Repeater-Builder] Re: M2 CAS
Hello Fred,
Very good points. Question, have you successfully used an IFAS with a
different IF frequency without modifications?
Joe, K1ke
---- Fred Seamans <[EMAIL PROTECTED]> wrote:
=============
.... Possible elimination
procedures are High Side Rx injection, swap out the IFAS and Hi IF
boards
for ones with a different IF, use more by pass caps, etc.
Yahoo! Groups Links
________________________________________________________________________
________________________________________________________________________
Message: 11
Date: Tue, 22 Feb 2005 18:48:53 -0000
From: "skipp025" <[EMAIL PROTECTED]>
Subject: Re: Comm Spec TP-38
Does the tone panel even display frequencies above
100Hz, just not decode them? That's a software
problem or programing. Most other problems are
hardware related. Just running a test sub tone in
from an external source will tell you mucho.
skipp
"Brent" <[EMAIL PROTECTED]> wrote:
Question...
Has anybody had a problem with the Communications Specialists TP-38
Tone
Panel not decoding PL tones about 100.0hz
it decodes from below 100.0 just fine and 100.0 but 100.0 is little
slow
decoding but above 100.0 it just does nothing..
Thanks
Brent
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Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 266.2.0 - Release Date: 2/21/2005
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________________________________________________________________________
________________________________________________________________________
Message: 12
Date: Tue, 22 Feb 2005 13:59:26 -0500
From: "Rogers, Ron" <[EMAIL PROTECTED]>
Subject: RE: Re: Comm Spec TP-38
The TP-38 only displays what tones are programmed to be enabled for
decoding. There is a keypad command to step through and display all
active tones that are enabled. Refer to the manual to validate your
programming
Ron Rogers
WW8RR
-----Original Message-----
From: skipp025 [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 22, 2005 1:49 PM
To: [email protected]
Subject: [Repeater-Builder] Re: Comm Spec TP-38
Does the tone panel even display frequencies above
100Hz, just not decode them? That's a software
problem or programing. Most other problems are
hardware related. Just running a test sub tone in
from an external source will tell you mucho.
skipp
"Brent" <[EMAIL PROTECTED]> wrote:
Question...
Has anybody had a problem with the Communications Specialists TP-38
Tone
Panel not decoding PL tones about 100.0hz
it decodes from below 100.0 just fine and 100.0 but 100.0 is little
slow
decoding but above 100.0 it just does nothing..
Thanks
Brent
--
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 266.2.0 - Release Date: 2/21/2005
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[This E-mail scanned for viruses at TNWEB LLC]
Yahoo! Groups Links
________________________________________________________________________
________________________________________________________________________
Message: 13
Date: Tue, 22 Feb 2005 19:04:20 -0000
From: "skipp025" <[EMAIL PROTECTED]>
Subject: Re: tpl amps, not so broad-band
I took a look at the web page below and noticed
the "may be tuned for broad band" statement.
Most all the typical TPL Amps I have measure are
semi narrow banded (which is normal and expected).
Power drops off quite fast for frequency changes
more than +- 5Mhz from the initial tuned frequency.
TPL Amps set up for classic 450-470MHz operation
are sometimes not easily retuned or best operated
at lower 440-450 amatuer service. I've noticed
this varies by amp model and the as-built unit.
Bypass any tr relays if you plan to use it for
Repeater Operation. Don't rely on the relay and
don't rf switch the coax line if you can help it
or you actually know about rf-hot switching and
how to prevent it with delayed rf.
You'd also be surprised how much power is lost
in the tr relay circuit function /section of an
amplifier.
cheers,
skipp
www.radiowrench.com/sonic
From: "Joe" <[EMAIL PROTECTED]>
I did a Google on PA6-1BE and found:
http://www.wiscointl.com/tpl/Mobile%20Amplifiers.htm
PA6-1BE Drive 8-15W Output 70-100W
________________________________________________________________________
________________________________________________________________________
Message: 14
Date: Tue, 22 Feb 2005 22:12:31 -0000
From: "na6df" <[EMAIL PROTECTED]>
Subject: FS Kenwood TK-840 K3 403-430mhz NIB
I have a new in the box, as in never installed or programmed,
Kenwood TK-840 K3 version. Covers 403-430 mhz LTR or conventional.
Has everything with it, bracket, mic, power cord, etc. Selling for a
friend in the 2-way biz that bought it by mistake, as he needed the
450-470 model. He thought I could find it a new home amongst
my "repeater buddies". You can have this one delivered to your door
(in the US) for $180. Just trying to recover his costs on this thing.
73 & thnaks for looking... Dave NA6DF
[EMAIL PROTECTED]
________________________________________________________________________
________________________________________________________________________
Message: 15
Date: Tue, 22 Feb 2005 14:20:55 -0800
From: Ken Arck <[EMAIL PROTECTED]>
Subject: Re: FS Kenwood TK-840 K3 403-430mhz NIB
At 10:12 PM 2/22/2005 -0000, you wrote:
You can have this one delivered to your door (in the US) for $180.
<---That HAS to be a typo?
Ken
--------------------------------------------------------------------------
----
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
We now offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net
________________________________________________________________________
________________________________________________________________________
Message: 16
Date: Tue, 22 Feb 2005 06:44:32 -0600
From: "Brent" <[EMAIL PROTECTED]>
Subject: Re: Re: Comm Spec TP-38
Hello Skipp,
I have all known tones turned on and active..(double checked that a few
times)
It will not decode them or show them at all
it will show and decode all below 100.0 with no problem, and it does that
like it should with no delay..
but if i try the 100.0 it has to have that tone signal present for at
least
3 seconds before it will show or decode it..
it is like a audio amp gone bad or some thing.. but i did swap them around
and reset the x2122 in the unit and still no difference..
I must be missing some type of failure somewhere..
Brent
----- Original Message -----
From: "skipp025" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, February 22, 2005 12:48 PM
Subject: [Repeater-Builder] Re: Comm Spec TP-38
Does the tone panel even display frequencies above
100Hz, just not decode them? That's a software
problem or programing. Most other problems are
hardware related. Just running a test sub tone in
from an external source will tell you mucho.
skipp
"Brent" <[EMAIL PROTECTED]> wrote:
Question...
Has anybody had a problem with the Communications Specialists TP-38
Tone
Panel not decoding PL tones about 100.0hz
it decodes from below 100.0 just fine and 100.0 but 100.0 is little
slow
decoding but above 100.0 it just does nothing..
Thanks
Brent
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Version: 7.0.300 / Virus Database: 266.2.0 - Release Date: 2/21/2005
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Version: 7.0.300 / Virus Database: 266.2.0 - Release Date: 2/21/2005
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