[amsat-bb] Re: LF Satellite ideas? 160m?

2010-12-12 Thread Bob Bruninga
Drats. Bad news.. Good news! Bad news: I was thinking that maybe 137KHz would leak through the ionosphere straight up, but then just realized that this is a tether satellite, so the antenna is VERTICAL! Thus, a null straight down. So maybe the only application then is to use it as a receive a

[amsat-bb] Re: LF Satellite ideas? 160m?

2010-12-12 Thread Trevor .
--- On Sun, 12/12/10, Bob Bruninga wrote: > So if we can hear a 1W amsat on 2m, then we should be able > to hear a 1 milliwatt transmitter on 160m with 20 dB > stronger signal! (Of course noise level can easily be 20 dB > stronger?) Bear in mind there are no Amateur Satellite Service allocations

[amsat-bb] Re: LF Satellite ideas? 160m?

2010-12-12 Thread John Magliacane
Hi Bob. > Drats. Bad news.. Good news! I don't think the ionosphere will allow 160 meter downlink propagation... on a regular basis, at least. UoSAT-OSCAR-9 carried HF beacons on 7, 14, 21, and 28 MHz, and if I recall correctly, the only beacon never heard was the one on 7 MHz. So, receiving