Re: [BVARC] Non-coordinated crossband repeater pair frequencies

[Jeff Greer via BVARC]

To talk to a friend, simplex (no repeater) and a tall antenna may work for them.


From: BVARC  on behalf of Jimmy Vance via BVARC 

Sent: Monday, June 8, 2020 11:49 AM
To: bvarc@bvarc.org 
Cc: Jimmy Vance 
Subject: Re: [BVARC] Non-coordinated crossband repeater pair frequencies


Cross band repeat aren't really done in pairs per se.  Generally you set your 
dual band mobile radio to access a 2m repeater and use the UHF side of the 
radio in a simplex fashion with an HT to cross band through your mobile to 
increase the range of your HT.

In Texas the UHF areas set aside for this are
440.750 - 440.975Cross Band Repeat - Fixed
445.750 - 445.975Cross Band Repeat - Mobile

Backyard repeaters are a different matter. These pairs are not assigned and 
available for anyone to use on a temporary basis for events like bicycle rides 
and marathons, etc. CTCSS tones are required

 VHF CH 1  -  145.250 out / 144.650 in
UHF CH 1  -  441.300 out / 446.300 in
UHF CH 2  -  441.325 out / 446.325 in
UHF CH 3  -  441.350 out / 446.350 in
UHF CH 4  -  441.375 out / 446.375 in


I have a Motorla GR1225 setup as a portable repeater to use at events. The 
duplexer is tuned in between .325 and .350 which allows operation on all 4 
frequencies without desense. We have had occasion where we start on one 
frequency and get interference and have to switch to one of the other 3

--jv


On 6/8/2020 8:40 AM, SETX Telecom via BVARC wrote:
Texas had, not sure if they are still there after the VHF FM Society has been 
changing things without membership voting on it, allocated several crossband 
pairs for such use.

In any case, TSQ should be use to prevent lock up and interference. As well as 
lowest power needed...typical ham rigs cannot handle broadband at full power 
anyway and will tend to burn up the PA if used at high or even medium power 
levels in xband rptr mode


On Mon, Jun 8, 2020, 8:22 AM Rob KC5RET via BVARC 
mailto:bvarc@bvarc.org>> wrote:
Hello all,

Was reading one of my facebook groups today and there was a ham looking to 
setup a small low powered crossband repeater so he could communicate reliably 
with a friend, but he wasn't sure what to look for.

I'm pretty sure he needs a set of "Non-coordinated crossband repeater pair 
frequencies."

Where would someone look for such a thing?  I performed a google search and 
didn't find a consensus.

My guess was, even though it would be a non coordinated repeater, he would need 
to check with the repeater coordinator in his area, to find out what those 
frequencies would be.

Thoughts?

73, Rob, KC5RET  EM20KE

Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org<mailto:BVARC@bvarc.org>
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org




Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org<mailto:BVARC@bvarc.org>
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org



Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org

Re: [BVARC] Non-coordinated crossband repeater pair frequencies

[Jimmy Vance via BVARC]

Cross band repeat aren't really done in pairs per se.  Generally you set 
your dual band mobile radio to access a 2m repeater and use the UHF side 
of the radio in a simplex fashion with an HT to cross band through your 
mobile to increase the range of your HT.


In Texas the UHF areas set aside for this are
440.750 - 440.975    Cross Band Repeat - Fixed
445.750 - 445.975    Cross Band Repeat - Mobile

Backyard repeaters are a different matter. These pairs are not assigned 
and available for anyone to use on a temporary basis for events like 
bicycle rides and marathons, etc. CTCSS tones are required


 VHF CH 1  -  145.250 out / 144.650 in
UHF CH 1  -  441.300 out / 446.300 in
UHF CH 2  -  441.325 out / 446.325 in
UHF CH 3  -  441.350 out / 446.350 in
UHF CH 4  -  441.375 out / 446.375 in


I have a Motorla GR1225 setup as a portable repeater to use at events. 
The duplexer is tuned in between .325 and .350 which allows operation on 
all 4 frequencies without desense. We have had occasion where we start 
on one frequency and get interference and have to switch to one of the 
other 3


--jv


On 6/8/2020 8:40 AM, SETX Telecom via BVARC wrote:
Texas had, not sure if they are still there after the VHF FM Society 
has been changing things without membership voting on it, allocated 
several crossband pairs for such use.


In any case, TSQ should be use to prevent lock up and interference. As 
well as lowest power needed...typical ham rigs cannot handle broadband 
at full power anyway and will tend to burn up the PA if used at high 
or even medium power levels in xband rptr mode



On Mon, Jun 8, 2020, 8:22 AM Rob KC5RET via BVARC > wrote:


Hello all,

Was reading one of my facebook groups today and there was a ham
looking to setup a small low powered crossband repeater so he
could communicate reliably with a friend, but he wasn't sure what
to look for.

I'm pretty sure he needs a set of "Non-coordinated crossband
repeater pair frequencies."

Where would someone look for such a thing?  I performed a google
search and didn't find a consensus.

My guess was, even though it would be a non coordinated repeater,
he would need to check with the repeater coordinator in his area,
to find out what those frequencies would be.

Thoughts?

73, Rob, KC5RET  EM20KE

Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org 
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org



Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org



Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org

Re: [BVARC] Non-coordinated crossband repeater pair frequencies

[SETX Telecom via BVARC]

Texas had, not sure if they are still there after the VHF FM Society has
been changing things without membership voting on it, allocated several
crossband pairs for such use.

In any case, TSQ should be use to prevent lock up and interference. As well
as lowest power needed...typical ham rigs cannot handle broadband at full
power anyway and will tend to burn up the PA if used at high or even medium
power levels in xband rptr mode


On Mon, Jun 8, 2020, 8:22 AM Rob KC5RET via BVARC  wrote:

> Hello all,
>
> Was reading one of my facebook groups today and there was a ham looking to
> setup a small low powered crossband repeater so he could communicate
> reliably with a friend, but he wasn't sure what to look for.
>
> I'm pretty sure he needs a set of "Non-coordinated crossband repeater pair
> frequencies."
>
> Where would someone look for such a thing?  I performed a google search
> and didn't find a consensus.
>
> My guess was, even though it would be a non coordinated repeater, he would
> need to check with the repeater coordinator in his area, to find out what
> those frequencies would be.
>
> Thoughts?
>
> 73, Rob, KC5RET  EM20KE
> 
> Brazos Valley Amateur Radio Club
>
> BVARC mailing list
> BVARC@bvarc.org
> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
>

Brazos Valley Amateur Radio Club

BVARC mailing list
BVARC@bvarc.org
http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org