I only recently joined this list so here is some more specific information on 6-meter wideband digital testing.
 
The ARRL, at the request of the HSMM WG, asked for and was granted a license to test digital modes up to 200 kHz wide on 6 meters. A goal of 256 kbps was set as this would allow decent compressed video transmssion in the future and the enhanced propogation on 6 m may be useful in rural areas. I did limited testing on 50.7 MHz with a transverter fed by test equipment generating the test signal at a fixed location and a mobile receiver. 50.6-50.8 MHz is experimental digital in the Northern California band plan. The NCPA shows this as multiple non-specific 20 kHz digital channels, but I saw nothing on a spectrum analyzer before or after the times that I was radiating. I did email the NCPA for recommendatins but never received a reply. The occupied bandwidth was less than 200 kHz so signal was in the noise before the 50.4 MHz AM calling frequency is reached.
 
73,
 
John
KD6OZH
 
----- Original Message -----
Sent: Wednesday, October 25, 2006 19:06 UTC
Subject: Re: [digitalradio] Don't ignore proposals/local HF net successes

You still don't get it it's not me you need to be
talking to go post this on 6 meter user groups
websites .... and see if they agree with you .

--- John Champa <[EMAIL PROTECTED]com> wrote:

> Bruce,
>
> The segment 50.5 - 51 is too small. Remember we
> need something 200 kHz wide
> to achieve the data rate objective for the test per
> Shannon's Rule. To get
> to 240 kbps with OFDM modulation we need 200 kHz of
> bandwidth.
>
> Again, it is just a TEST and with a temporary
> EXPERIMENTAL ticket. This is
> NOT a permanent band change. If the FCC does allows
> for continued use,
> however, where in the 6M band do you or SMIRK
> suggest we set up
> housekeeping?
>
> John - K8OCL
>
>
> >From: bruce mallon <[EMAIL PROTECTED]com>
> >Reply-To: digitalradio@yahoogroups.com
> >To: digitalradio@yahoogroups.com
> >Subject: Re: [digitalradio] Don't ignore
> proposals/local HF net successes
> >Date: Wed, 25 Oct 2006 04:10:04 -0700 (PDT)
> >
> >
> >Rick....
> >
> >If someone had proposed 50.5-51.00 ( NOT 50.300 -
> >54.000 ) for SS 99% of us could have lived with
> that.
> >That part of the band is very lightly used except
> for
> >some psk digi radios that are already there.
> >
> >No one I know of is opposed to digital anything
> unless
> >it is going to interfere with all other modes. The
> >ARRL did at best a very poor job of informing band
> >users and if your not a league member and don't get
> >qst you were not informed at all .... and I agree
> >SMIRK which should have done more seems to have let
> us
> >down.
> >
> >What I see here is a lack of concern of the "
> >EXPERIMENTER HAMS " in what what they seem
> important
> >and indifferent to what it would do to all other
> users
> >..... get out of our way you LEGACY modes ...... we
> >are what this band needs ......
> >
> >Myself I have bought a new TS-2000 and have psk-31
> on
> >my older ft-100 that i can use over a wide range of
> >bands so I'm not a SSB ELITE type ham and open to
> new
> >modes on any band as long as that mode doesn't
> >displace modes already there .... displacing other
> >hams does nothing to build interest in this hobby.
> >
> >As for 220 MHz we lost 220-222 because the ARRL
> failed
> >again to act and with a CLASS E CB proposed they
> >fought that plan which was modded to allowing UPS
> to
> >have the band anyway. I was one of only 5 users
> within
> >100 miles of Tampa on that band in 1974 and was
> >running stack KLM 9 elm beams at 50 foot here in
> >Tampabay and getting to Orlando and Brooksville
> every
> >night . I was quite active on 220 before i got
> married
> >and had to get rid of it back in 1980 HOWEVER it is
> a
> >wonderful band and SS should get very good results
> as
> >good as 2 meters with much less interference. A
> GOOD
> >CHOICE ON THE PART OF THE FCC !
> >Unlike 6 or 2 Meters the 220 mhz band is almost
> unused
> >nation wide but remember it is A GREAT BAND FOR
> TROPO
> >and it DOES get E-Skip! just like 2 does.
> >
> >In the future any wide changes to 6 or 2 needs to
> be
> >well thought out with input from the USERS.
> >More proposals like 50.3-54 and 144.3 to 148 are
> >doomed to failure since they impact all ready
> existing
> >modes and set band plans and do nothing to increase
> >usage of these bands.
> >
> >Bruce
> >
> >
> >__________________________________________________
> >Do You Yahoo!?
> >Tired of spam? Yahoo! Mail has the best spam
> protection around
> >http://mail.yahoo.com
> >
>
>
>

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