[amsat-bb] Fox Telemetry antenna?
Greg D
ko6th.greg at gmail.com
Tue Oct 6 23:48:44 UTC 2020
Maybe the AC cap is failing?
Greg KO6TH
Mark L. Hammond via AMSAT-BB wrote:
> Rotor/coax snags, then burned out motor. Or just a burned out motor.
> That's been the most common problem for me. Stops turning...
>
> Mark L. Hammond [N8MH]
> AMSAT Director and Command Station
>
>
>
> On Tue, Oct 6, 2020 at 6:28 PM Gary via AMSAT-BB <amsat-bb at amsat.org> wrote:
>
>> I am curious do they stop turning or do they quit indicating?
>>
>> The Alpha Spid looks cool and reliable, but at a completely different
>> price point.
>>
>> Thanks and 73,
>> Gary "Joe" kk0sd
>>
>> -----Original Message-----
>> From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Bob Hammond via
>> AMSAT-BB
>> Sent: Tuesday, October 6, 2020 4:00 PM
>> To: amsat-bb at amsat.org
>> Subject: Re: [amsat-bb] Fox Telemetry antenna?
>>
>> So, can I just park my LEO antennas south just a bit above the horizon for
>> dedicated telemetry collection when not using them for sat ops?
>>
>> Bob W7OTJ
>>
>> On Tue, Oct 6, 2020 at 1:49 PM Stephen E. Belter via AMSAT-BB <
>> amsat-bb at amsat.org> wrote:
>>
>>> Kevin,
>>>
>>> I'm in West Lafayette, Indiana, so no salt water. My antennas are
>>> M-squared medium size antennas, 2MCP14 and 436CP30 with polarity
>>> switches, so not overloaded.
>>>
>>> Mark N8MH, has had similar experience with his Yaesu's. Since he is a
>>> dedicated telemetry collector like you, and since he is a control
>>> operator for the Fox satellites, he replaces his rotors when they
>>> fail. He had a volunteer to repair his broken rotors, so I
>>> transported 6-8 rotors from his garage in North Carolina (not near
>>> salt water either) to Indiana. Half were elevation rotors, half were
>>> azimuth rotors. I thought I was just having bad luck until Mark shared
>> his experience.
>>> The last time mine failed, it was the azimuth rotor. Pointing the
>>> Yagis south just above the horizon worked a little better (long term)
>>> than an omnidirectional antenna. Since it failed while I was on a 3
>>> month trip, I couldn't replace the rotor.
>>>
>>> I still recommend the G5500 rotors for normal operators, but they may
>>> not be the best choice for 24x7x365 telemetry collection. (I'm glad
>>> they work for you in that mode.) I've since switched to an AlphaSpid
>>> rotor with a Green Heron controller. You can buy the AlphaSpid rotors
>>> without the controller (my recommendation for heavy duty use) and use
>>> a Green Heron instead.
>>>
>>> Still: YMMV
>>>
>>> 73, Steve N9IP
>>> --
>>> Steve Belter, seb at wintek.com
>>>
>>>
>>> On 10/6/20, 3:53 PM, "AMSAT-BB on behalf of Kevin via AMSAT-BB" <
>>> amsat-bb-bounces at amsat.org on behalf of amsat-bb at amsat.org> wrote:
>>>
>>> Steve,
>>> What are you doing that is wearing it out in 4-8 months?
>>> overloaded?
>>> near the ocean with salt? something has to be wrong as mine go for
>>> years.
>>>
>>> 73 Kevin WA7FWF
>>>
>>> On 10/6/2020 10:21 AM, Stephen E. Belter via AMSAT-BB wrote:
>>> > Roy,
>>> >
>>> > In my experience, using the CP antennas with the G5500 will help
>>> you collect and decode about 4-6 times more packets than an
>>> omnidirectional antenna.
>>> >
>>> > But tracking the Fox satellites using the Yaesu rotors will wear
>>> out the rotors in 4-8 months. Replacement rotors are about $250 each
>>> (you won’t need to replace the controller).
>>> >
>>> > YMMV
>>> >
>>> > 73, Steve N9IP
>>> > --
>>> > Steve Belter, seb at wintek.com
>>> >
>>> >
>>> >
>>>
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>> _______________________________________________
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>> to all interested persons worldwide without requiring membership. Opinions
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> _______________________________________________
> 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!
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