If you are installing a D*Star repeater stack (2m 440cm modules) can you
use a single dual band antenna for both modules or do you need separate
antennas for every module in the stack?
I'm surprised you didn't suggest that the analog FM users on simplex simply put
a PL tone on- it works in simplex, as well, you know. That would allow people
to maintain their unsquelched condition if a DV communication is in progress.
These reasons to keep from offending non-DSTAR users don't
what is the lightning like in your area?
If it is anything like it is here in Florida... go with a commercial grade
antenna... otherwise your putting up a toothpick maker
YES you can, but ask yourself, how many times you want to replace
it when a storm rolls by.
Some are lucky, others
STAY OFF KNOWN SIMPLEX FREQUENCIES ! It's that simple. Here in Florida we have
ECHO LINK stations popping up on KNOWN simplex net frequencies while UNUSED
frequencies sit unused by them
The idea you can place digital on simplex and the others use a tone squelch is
nonsense digital will
At 10:23 AM 4/20/2010, cybersapient wrote:
I'm surprised you didn't suggest that the analog FM users on simplex
simply put a PL tone on- it works in simplex, as well, you know.
Hi, Shane,
PL (CTCSS) works on simplex technically, of course. But it's not feasible
logistically.
CTCSS requires
In the southeast, we have specific digital simplex frequencies coordinated as
so by SERA. Please use them and not frequencies coordinated as packet.
FM digital simplex on 2m are:
146.420, 146.440, 146.460, 146.480, 147.420, 147.440, 147.460, 147.480
For 440 use these:
440.9125, 440.9250,
NONE of them are on KNOWN FM SIMPLEX FREQUENCIES
In the southeast, we have specific digital simplex frequencies coordinated as
so by SERA. Please use them and not frequencies coordinated as packet.
FM digital simplex on 2m are:
146.420, 146.440, 146.460, 146.480, 147.420, 147.440,
David,
Just because SERA published it, doesn't mean that it is true. (or in more
specifically, should be used). SERA will be quick to say that they aren't a
frequency coordinating organization, they are a repeater frequency coordinating
organization.
Some of the frequency listed in the plan
If you are installing a D*Star repeater stack (2m 440cm modules) can you
use a single dual band antenna for both modules or do you need separate
antennas for every module in the stack?
That somewhat depends on your preferences. If you are seeking
decent performance then I would suggest
If you find that you must use a Diamond or Comet antenna, I would suggest that
you at least solder each connection. The mechanical connections will cause you
grief over time.
Also, take the time to seal the antenna joints (including the top cap) as they
will allow water to find a way in.
HERE in TAMPA BAY .
146.520 and 147.550 are used all others have little activity on them
I in 40 years of being on 2 meters here can't remember any normal use of any
others
As long as a efford is made to AVOID the common ones and KNOWN net frequencies
like 147.550 there is no problem
Bob,
All good advice, however I would like to add that there
are a number of duplexers out there that do both pass
and reject such as TX/RX and Wacom (both the same
company now I believe) and there are some other ones
as well. I like the TX/RX vari-notch design where all
cans in the
Daniel
It is true that The band pass/band reject do offer some protection it
is not as great as many believe. See
http://www.anglelinear.com/repeaters/repeaters.html
for a description of the limited filtering of most Cavity type
Duplexers. We have duplexers from TX/RX and still needed
NO, Its GMSK.
Unless you just want to use semantics and start a discussion
You should try to find a channel here is Southern California...!
73
Don WB5EKU
On Tue, Apr 20, 2010 at 1:26 PM, David w4...@bellsouth.net wrote:
D-STAR is FM isn't it. So FM digital simply means d-star.
--- In
And in the Atlanta area, the usage is different, very different.
There are some major simplex nets on some of the other frequencies.
Ed WA4YIH
From: dstar_digital@yahoogroups.com [mailto:dstar_digi...@yahoogroups.com] On
Behalf Of bruce mallon
Sent: Tuesday, April 20, 2010 2:27 PM
To:
Nate,
I agree with most everything in your note, but I'd like to extend it a little.
Main message -- hopefully coordinators are interested in the needs and ideas of
repeater users.
I'm not a repeater owner or trustee, just a user. And I've come to
appreciate how difficult the coordination
At 12:34 AM 4/21/2010, you wrote:
what is the lightning like in your area?
If it is anything like it is here in Florida... go with a commercial grade
antenna... otherwise your putting up a toothpick maker
If on a site where any weather extremes are possible - wind, snow,
ice, lightning,
Bob,
Yes, you are right. Many people have found that the D-Star
systems need more isolation than a similar FM system especially
the UHF units. There has been much discussion about that. I was
only trying to add that the pass/reject type filters do offer far
more protection from things outside
You can use a dual band antenna with a dipelxer and duplexers on each band but
there are trade-offs. When we first put up W6DHS, we were using a dual band
Comet 11dbi on 2 meters. We replaced the two meter side with a DB Products
dipole array 6dbd. We measured a 15db signal increase over
Ed
Which ones are in use ?
--- On Tue, 4/20/10, Woodrick, Ed ewoodr...@ed-com.com wrote:
From: Woodrick, Ed ewoodr...@ed-com.com
Subject: RE: [DSTAR_DIGITAL] Re: ARRL Field Day Rules - 145.67 simplex
To: dstar_digital@yahoogroups.com dstar_digital@yahoogroups.com
Date: Tuesday, April 20,
At 06:43 PM 4/20/2010, David Holman wrote:
The other suggestion would be to set the DStar radios to auto detect and
then have all the analog guys set a PL tone.
Hi, David,
I think I covered this in a previous reply, but I'll add two things:
Getting simplex users to all do something together
ANY digital on simplex is going to start a cat fight
--- On Tue, 4/20/10, Gary Pearce KN4AQ kn...@arrl.net wrote:
From: Gary Pearce KN4AQ kn...@arrl.net
Subject: Re: [DSTAR_DIGITAL] Re: ARRL Field Day Rules - 145.67 simplex
To: dstar_digital@yahoogroups.com, dstar_digital@yahoogroups.com
On Apr 20, 2010, at 5:43 PM, Daniel G. Thompson wrote:
Bob is definately correct that the typical 4 can setup used
on the average FM repeater will cause you nothing but
headaches, and that includes the ultra nice TX/RX stuff.
You either have to go with a 6 can setup using pass/reject
or
On Apr 20, 2010, at 6:59 PM, ErnestK wrote:
You can use a dual band antenna with a dipelxer and duplexers on each band
but there are trade-offs. When we first put up W6DHS, we were using a dual
band Comet 11dbi on 2 meters. We replaced the two meter side with a DB
Products dipole array
On Apr 20, 2010, at 9:31 PM, Gary Pearce KN4AQ wrote:
Analog and digital live well together on P-25 repeaters, which are generally
dual mode. The analog users depend on tone decode to keep from hearing the
equally harsh P-25 digital sound. So the concept is solid. I just don't think
you
On Apr 20, 2010, at 9:50 PM, bruce mallon wrote:
ANY digital on simplex is going to start a cat fight
S... don't let the APRS or other Packet guys know that, okay? :-)
--
Nate Duehr, WY0X
n...@natetech.com
Actually, our only dual-mode P25 repeater around here went by the
wayside, because the digital users got tired of the non-CTCSS
understanding analog users keying up in analog in the middle of a
QSO to ask What's wrong with the repeater?!...
That's the problem I see with dual mode. Dual
WOW- I sure poked an ant bed here, didn't I
My point is DSTAR can operate SIMPLEX, as that is what I thought the point was
for field day. Now assuming we're talking about SIMPLEX, one could SHARE a
SIMPLEX frequency with all the other hams out there.
Hams are a pretty intelligent lot-
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