[amsat-bb] D-Star Interference to XW-2A Downlink

[M5AKA]

 Before casting blame it's worth remembering that these satellites fully conformed to the then IARU Region 3 band plan.

When the problem with the IARU Region 3 band plan came to light the Chinese Radio Sports Association (CRSA) / Chinese Radio Amateur Club (CRAC) proposed an Action on the IARU Administrative Council in 2015 to make accurate band plan information available, see 
https://amsat-uk.org/2015/10/21/iaru-region-3-conference/

IARU Region 3 have subsequently revised their band plan to specify the IARU agreed 145.800-146.000 MHz satellite allocation, although I can't see the 144.000-144.025 MHz IARU satellite allocation on IARU R-3's latest band plan issued September 2019, see  
http://www.iaru-r3.org/newsite/wp-content/files/R3-004%20IARU%20Region%203%20Bandplan%20rev.2.pdf
The two satellite allocations are better shown on the IARU Region 2 band plan at 
https://www.iaru-r2.org/documents/explorer/files/Plan%20de%20bandas%20%7C%20Band-plan/R2%20Band%20Plan%202016.pdf

73 Trevor M5AKA




    On Thursday, 7 November 2019, 16:23:19 GMT, Hasan al-Basri via AMSAT-BB <amsat-bb at amsat.org> wrote:  
 
 Thank to all for the good info.
Pity the Chinese did not follow best practice.
Appreciate the info very much!
73, N0AN

Hasan


On Thu, Nov 7, 2019 at 10:07 AM Dave Webb KB1PVH <kb1pvh at gmail.com> wrote:

> 145.67 is in the Miscellaneous and experimental section not the satellite
> sub band. You can thank the Chinese for not using the satellite sub band.
>
>
> See here http://www.arrl.org/band-plan
>
> 145.50-145.80 Miscellaneous and experimental modes
> 145.80-146.00 OSCAR subband
> Dave-KB1PVH
>
>
> Sent from my Galaxy S9
>
> On Thu, Nov 7, 2019, 11:00 AM Hasan al-Basri via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
>
>> There is a repeater on 145.670 (D-Star) in the Dallas area
>> https://w5fc.org/tag/fsq/
>>
>> It makes using XW-2A nearly impossible as it is right in the passband.
>>
>> Who in the world thought it was a good idea to put a D-STAR repeater
>> (simplex) in the middle of a satellite downlink passband?
>>
>> Does this comply with any existing ARRL Band Plan, on other words is this
>> a
>> shared resource with D-Star?  If so, I guess it's just tough luck and live
>> with it. If not, perhaps someone from AMSAT can have a word with the
>> Trustee?
>>
>> 73, N0AN
>>
>> Hasan
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_______________________________________________
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