On this page http://www.repeater-builder.com/cat-auto/cat-index.html
there are links to the company web page and to the CAT controllers
mailing list.
At 06:30 AM 07/24/08, you wrote:
Nuffink in the manual about a beacon ID mode!
Cheers Dave UZN
--- In
(It's easier to see this than to describe it in e-mail. Maybe someone
will send some screen-shots of what it looks like someday... I've tried
taking photos of my IFR 1500 with my cheap digital camera (4MP
point-and-shoot Nikon) and it just doesn't look right.
Each message I read makes me
Group,
While looking for something yesterday I found a box that I have not
opened in a few years. Inside is a file marked Duplexers containing
many articles and booklets on the subject. There is also a binder from
TxRx with all sorts of technical information on their products,
including
Sort of on topic... Does anyone know off the top of their head- what it would
cost to get a UHF frequency pair from the FCC? We are a small emergency
response team with a 501(c)3 status. We have an MSF5000 and a lot of other uhf
radios that were donated to us. I just don't have the time to
The FCC doesn't not provide frequency pairs for repeaters. The local
coordinating group does. The license (ham) is issues by FCC.
coordination is not
I think they are referring to a commercial pair, Remember not everyone
is a ham!
Rob KS4EC
--- In Repeater-Builder@yahoogroups.com, Dave [EMAIL PROTECTED] wrote:
The FCC doesn't not provide frequency pairs for repeaters. The local
coordinating group does. The license (ham) is issues by FCC.
Check with Homeland Security in your area. They have frequencies assigned and
might be able to let you use one of them.
73 - Jim W5ZIT
--- On Fri, 7/25/08, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:
From: [EMAIL PROTECTED] [EMAIL PROTECTED]
Subject: [Repeater-Builder] Frequency pair
To:
There ARE frequency coordinators for commercial pairs,
as well... a list is on the FCC website at
http://www.fcc.gov/pshs/public-safety-spectrum/coord.html.
It appears that the filing fee for a new land mobile
license below 470 MHz is $60.00, according to the fee
schedule I drilled down to.
I think we are making much ado about nothing here. Certainly, for UHF
and VHF duplexers, the lengths of the cables that came with it should be
fine for the ham band as well. At least I've never seen one that it
matters. Now, I suppose moving one that is for 160-175 down to 146,
yeah, you'd
George Henry wrote:
There ARE frequency coordinators for commercial pairs,
as well... a list is on the FCC website at
http://www.fcc.gov/pshs/public-safety-spectrum/coord.html.
It appears that the filing fee for a new land mobile
license below 470 MHz is $60.00, according to the fee
--- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote:
This is a well known problem with MASTR II PA's.
Nate WY0X
Thanks, Nate.
I will pass that along to Rick. He is the chief engineer at WCVB in
Boston, so there's a good chance that problem was remedied.
Jason
--- In Repeater-Builder@yahoogroups.com, Nate Duehr [EMAIL PROTECTED] wrote:
No point in extending the pointless license class wars on a club
website though.
Nate WY0X
I understood that caption as a reference their abilities. If you were
familiar with the club up here you would know this
If I understand DC remotes correctly, they are controlled by polarity
and voltage?
Jason
Jason Greene wrote:
If I understand DC remotes correctly, they are controlled by polarity
and voltage?
Close-current. Usually transmit on F1 (channel 1) is either +5 to 6mA or
+11 to 12 mA. Voltage is varied to provide that current.
Joe:
Thanks for the info. I did a cheap 'n' dirty tune up with the service
monitor and my DC-to-light receiver and was able to get the beast to
behave surprisingly well. It required backing out the tuning screws
far enough so that the duplexer will now have to rest on its side, but
I think
Your are just going to have to make time. Frequency coordination is a slow
process no matter which service you are eligible for. You might start with
APCO International to find out if you are eligible under the Public Safety
area. If not they can direct you in the right direction.
Fred W5VAY
Polarity and Current and depending on the mfgr the direction
of the current and mostly the value in mA (milli-amps).
The current generator (not voltage) is controlled to set and
control the proper functions on the termination panel or
dc remote adapter box.
Works very well... but the phone
And a Business Band license fee is $105 for a 10-year license - not
including the coordinator's fees.
http://mymotorolaradio.com/fcc.asp
Mark - N9WYS / WQIV271
-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of wd8chl
George Henry wrote:
There ARE frequency
'normal base' series
+5.5 mA = TX F1 on 2-freq
+12 mA = TX F2 or Fi on single-freq station
-2.5 mA = PL monitor
-5.5 mA = 2nd receiver knock-down
-12.5 mA = page (kills PL on transmit)
then there is the 'repeater control' series
+ 5.5 = TX
+12.5 = repeater on
-2.5 = PL monitor
-5.5 =
Looking at Part 90.20(1)(iii) and (2)(iii) it looks
like they could qualify for the Public Safety pool...
George, KA3HSW / WQGJ413
--- wd8chl [EMAIL PROTECTED] wrote:
[snip]
Now exactly what kind of coordination/service they
are eligible for is
another question...since they are not a
Output frequency is 145.450 input is 144.850. How do I figure out
what length the cables should be between the rx side and tx side that
connect to the T-Connector? Thanks and 73's !
Gary K2ACY
What kind of duplexer is it? I have several older Sinclair 2 meter duplexers
that were up in the 170 mHz range that I moved down to the ham band, and I had
to replace each 10.5 inch cable that went from the can to the Tee with a cable
12.5 inches long. Turns out for those older models that
Jim,
Thanks for the response. The duplexer is a Telewave TPRD1554. They
are brand new and bought from Tessco tuned. The cable on the RX side
is marked 11 in black marker on the connector and the TX side is
marked 11 1/2 . Both cables terminate at the T. I just want to feel
assured that they
There are several different standards for polarity and current when working
with DC remotes.
-- Original Message --
Received: Fri, 25 Jul 2008 08:26:25 AM PDT
From: wd8chl [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: DC Remotes
Jason Greene
Hi Joe; I had the same problem and found the the dipswitch module was bad. We
found another module and it worked great. Check each switch with a VOM. Bill
N8LXM
kb5vjy [EMAIL PROTECTED] wrote: Small problem that I'm sure will
bring out a chuckle to the experienced
repeater builders
Telewave is VERY responsive to e-mails and even phone calls. I've had technical
questions about their duplexers on several occasions and have sent e-mail to
their only public e-mail address. Usually I get a reply later the same day or
first thing in the morning from a man named Ray Collins.
--- On Fri, 7/25/08, garyp609 [EMAIL PROTECTED] wrote:
From: garyp609 [EMAIL PROTECTED]
Subject: [Repeater-Builder] Re: How to figure cable length for duplexer?
To: Repeater-Builder@yahoogroups.com
Date: Friday, July 25, 2008, 7:09 PM
Jim,
Thanks for the response. The duplexer is a
Hi, I hpoe this helps.
1) Enter the 7number code.
2) Enter *607* 900
3) Enter *0 to exit
Mark N8TSK
[EMAIL PROTECTED]
--- On Thu, 7/24/08, dave_g7uzn [EMAIL PROTECTED] wrote:
From: dave_g7uzn [EMAIL PROTECTED]
What duplexer would you recommend? I was expecting better results. Is
there a huge difference in 77db versus 100db isolation besides the
price? Performance wise. Kinda wish I would have done my homework
before buying the TPRD1554. Running 25 watts here. What is your
duplexer of choice?
Thanks
Thanks for the info. I will call call Telewave for an education. The
TPRD1454 shows 77db of isolation and a minimum of a 1 meg split. I am
running .600 split here.
73's
Gary K2ACY
--- In Repeater-Builder@yahoogroups.com, Bob M. [EMAIL PROTECTED]
wrote:
Telewave is VERY responsive to e-mails
As someone else mentioned, 77dB is nowhere near enough isolation, especially at
600 kHz spacing. You need at least 90dB with double-shielded coax between the
duplexer and radios. As with so many other things in life, more is better. This
also translates to more bucks.
You may need a six-cavity
Bob,
Point well taken and thank you.
If I were to change the seperation to 1mhz and get the duplexer
retuned would that provide enough isolation? I guess my question is
will the duplexers work ok with a different band split?
Thanks,
Gary K2ACY
--- In Repeater-Builder@yahoogroups.com, Bob M.
Bob and Group,
Telewave used to, my Ex-Boss used to call up and ask Ray Collins what the
length of coax would be for to change a channel on a combiner to a new
frequency. Ray would give him a length and the Boss would have one of us
Techs to build it. Sadly, Ray is semi-retired and only works
At 7/25/2008 18:02, you wrote:
As someone else mentioned, 77dB is nowhere near enough isolation,
especially at 600 kHz spacing. You need at least 90dB with double-shielded
coax between the duplexer and radios. As with so many other things in
life, more is better. This also translates to more
The values jive close with what I have here. An original
TPRD-1454 I ordered direct from Telewave on 145.470 MHz.
Have no problem running the mentioned duplexer at about 45
watts and a decent .2uV receiver. Works great... lasted without
fail from 1987 when I paid about $630 new for it. Prices
At the risk of sounding like Skipp, it all depends on the
quality of the repeater transmitter receiver.
Bob NO6B
We are Borg. You will be assimilated. Resistance is futile.
s.
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