[amsat-bb] NO-84 questions

[Paul Stoetzer]

Those satellites all had resonant 10 meter antennas (as the downlink).
Even so, attenuation when the band is open is easily noticeable.

NO-84 has a non-resonant whip for the uplink. It's 72" long. A
full-size 1/4 wave monopole would be 99.8". That presents an
additional challenge requiring higher uplink power (WB4APR recommends
75 watts to a 1/4 wave vertical, about 3 times what was suggested at
launch).

73,

Paul, N8HM

On Sun, Aug 7, 2016 at 8:55 PM, Joe <nss at mwt.net> wrote:
> if it did then Oscar 7 and similar would not have worked, how about the
> Russian birds too 15 and 10 meters.
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 8/7/2016 7:07 PM, Mvivona via AMSAT-BB wrote:
>>
>> Just curious. Doesn't the ionosphere have an attenuation on 10 meters?
>>
>> Michael KC4ZVA
>>
>>
>> On Aug 7, 2016, at 7:28 PM, Mark Lunday <wd4elg at triad.rr.com> wrote:
>>
>> 2315Z pass.
>>
>> I could see someone in the passband, but it showed as 6 traces rather than
>> one.  Does that mean the transponder was overdriven with PSK?
>>
>> I attempted to see if I could get through and at least see my downlink,
>> but
>> no luck.  I figured even without the Doppler-compensated software, I
>> should
>> see my signal..30 watts to an off-center-fed dipole at 56 feet.
>>
>> Thoughts/suggestions welcome.
>>
>> Mark Lunday, WD4ELG
>> Greensboro, NC  FM06be
>> wd4elg at arrl.net
>> http://wd4elg.blogspot.com
>>
>>
>> _______________________________________________
>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership. Opinions
>> expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>> _______________________________________________
>> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership. Opinions
>> expressed
>> are solely those of the author, and do not reflect the official views of
>> AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>>
>>
>>
>
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb