[amsat-bb] Illegal downlink in the 70 cm band

[Zach Metzinger]

On 01/20/19 12:51, Arthur Feller, W4ART wrote:
> Remember to check the RR 5.282.
> 
> RR 5.282 In the bands *435-438MHz*, 1260-1270MHz, 2400-2450MHz, 
> 3400-3410MHz (in Regions2 and3 only) and 5650-5670MHz, *the 
> amateur-satellite service may operate subject to not causing harmful 
> interference to other services operating in accordance with the Table 
> (see No. **5.43**).


Art-

Good point, but does the telemetry on the CZ-4B use an amateur radio 
callsign? If not, then perhaps it is part of the China aeronautical 
radio-navigation service:

5.279A "The use of the frequency band 432-438 MHz by sensors in the 
Earth exploration-satellite service (active) shall be in accordance with 
Recommendation ITU-R SA.1260-1. Additionally, the Earth 
exploration-satellite service (active) in the frequency band 432-438 MHz 
shall not cause harmful interference to the aeronautical radionavigation 
service in China."

I'm certainly not defending the use of our spectrum for commercial 
telemetry, but both China (region 3) and the USA (region 2) are in the 
Amateur secondary allocation on 70cm. We have to expect some 
interference on this band.

--- Zach
N0ZGO