toggle quoted message. . .
Well, I pulled the spreadsheet kept by
the Upstate New York Repeater coordinators, and found a few
frequencies that seem clear -
input, 447.025 output.
I'm going to try a few NiceRF SA828 Walkie Talkie modules. Not
sure if I'll run them at 500mW or 1W. Since it'll be
transmitting on 70cm, I'm inclined to use the lower power, since
it'll have lower free space path loss. That would also reduce
This is going to be an ambitious flight, including analog TV video
on 70cm, the repeater, a payload drop initiated via DTMF tones,
and with luck, the entire thing livestreamed onto youtube. We
hope to have a ground station with a high gain beam tracking based
on APRS beacons, and feeding into the youtube stream.
Bill / WB8ELK has me on the agenda to talk about the successes (or
spectacular "lessons learned") at the Balloon Sat session at
As the flight draws near, and we're confident we can livestream,
I'll post URLs for those who would like to watch at home.
Tentative flight date is Sunday, April 28 with a rain date on May
Mike / KD2EAT
Advisor, Amateur Radio Club at Cornell
On 2/27/2019 12:23 PM, Joe wrote:
I agree with Bill on that
FORGET repeater co-coordinators. We used them on the very
first repeater flight ever.Way back in like 1989 or so. And
They just do not understand the coverages we can get with
these flights. And one of the UHF freqs we were suggested to
use as being safe, ended up being a UHF link from a repeater
system, satellite receivers. So in the middle of our flight,
suddenly on the balloon was a swapnet happening.
But if you want quiet great freq the pair Bill stated below we
have used probably a dozen times and have worked great every
Now if you really want to have FUN! Many will make me now to
put on my Flame suit. But we have done it probably 4 times?
But the biggest fun was this pair
146.52/446.000 Yup! It was crazy easily worked well over
Mike what do you plan on usi9ng for equipment?
Will the repeater go both ways, think HT in crossband repeat
but both directions.
Near Space Sciences
On 2/27/2019 9:59 AM, Bill Brown via
I typically use 446.025 and 144.340. Both are simplex. For a simplex repeater i use 144.340.
On Feb 27, 2019, at 8:39 AM, Michael Hojnowski <kd2eat@...> wrote:
I'm intending to fly a cross-band repeater with a HAB in April. It occurs to me that I don't have a good idea of how to select frequencies. Should I be using one from the repeater input range on one band, and output on another? Should I be selecting simplex frequencies for this short term use? Should I attempt any kind of coordination with our regional frequency coordination groups?
What have people done?
Thanks for any advice,
Mike / KD2EAT