[OZAPRS] SatGate around VK7?

[Andrew Rich]

So is it best to keep them on the same pole ? Or rework them ?

Andrew

Sent from my iPhone

> On 9 Dec 2017, at 9:22 am, Mark Jessop <lenniethelemming at gmail.com> wrote:
> 
> No, they are mashed together into one stick.
> (Yes, they are separate, he just sells them as a kit).
> 
> I use those turnstiles plus a MiniKits preamp on my SatNOGS stations. As mentioned previously, my only gripe with them is the possibly narrower-than-necessary antenna pattern. The SatNOGS guys in Greece are getting a few of them tested in a chamber for pattern & achieved gain, so it will be interesting to see what the pattern actually is. 
> 
> Apparently it is possible to widen the pattern by moving the reflectors back further, though I'm not sure exactly what distance should be used (they are currently at 1/4 wavelength). Time to break out NEC I suppose. 
> 
> 73
> Mark VK5QI
> 
> 
> 
> 
> 
>> On Sat, Dec 9, 2017 at 9:08 AM, <vk4tec at tech-software.net> wrote:
>> Mark that ebay, its it two separate antennae ?
>> 
>>  
>> 
>> 144 and 440 MHz Turnstiles
>> 
>>  
>> 
>> Andrew
>> 
>>  
>> 
>> From: OZAPRS [mailto:ozaprs-bounces at aprs.net.au] On Behalf Of Mark Jessop
>> Sent: Saturday, 9 December 2017 8:57 AM
>> To: Australian APRS Users <ozaprs at aprs.net.au>
>> Subject: Re: [OZAPRS] SatGate around VK7?
>> 
>>  
>> 
>> Unless you apply some serious weatherproofing, an arrow antenna is probably not a good idea for a long-term outdoor install. Keep the arrow antenna for portable ops and either build or buy something else to go on the rotator. 
>> 
>>  
>> 
>> I've been using a turnstile for my 2m SatNOGS ground station (also a SatGate) for a while, and that works just fine for APRS from the ISS. It doesn't perform amazingly well below 20 degrees elevation, but it's definitely usable. 
>> 
>> The turnstile I'm using is from eBay: https://www.ebay.com.au/itm/Set-of-2-antennas-turnstile-crossed-dipole-RHCP-2m-and-70cm-N-connector/292347719120?hash=item4411482dd0:g:Ry0AAOSw8gVYBd1P
>> 
>>  
>> 
>> My only gripe with it is the spacing of the elements could have been a bit larger, for a more hemispherical pattern. As it is, it has a bit of an upwards lobe, hence the degraded performance at low elevation angles. 
>> 
>>  
>> 
>> I thought you built a turnstile - why not use that for the SatGate, i'm sure it would perform just fine. Maybe put a filtered preamp on it to eke out a bit more performance.
>> 
>>  
>> 
>> 73
>> 
>> Mark VK5QI
>> 
>>  
>> 
>>  
>> 
>>  
>> 
>> On Sat, Dec 9, 2017 at 6:03 AM, Andrew Rich <vk4tec at tech-software.net> wrote:
>> 
>> Josh
>> 
>> Try this
>> 
>> Telnet rotate.aprs.net 14580
>> User password
>> #filter p/RS0ISS
>> 
>> Than watch
>> 
>> I just sold my vertical
>> 
>> Arrow will go up on a rotator
>> 
>> I have beaten my head against a brick wall trying to get vk4 going
>> 
>> Andrew
>> 
>> Sent from my iPhone
>> 
>> 
>> > On 8 Dec 2017, at 9:28 pm, Josh <vk2hff at vk2hff.ampr.org> wrote:
>> >
>> > From Sydney I often get picked up by satgates in VK3/4/5 and ZL - the
>> > ISS's footprint is pretty large.
>> > ISS is probably the only bird you'll have much luck with using just a
>> > HT, but you might get into NO-84 on a good pass.
>> >
>> > - Josh VK2HFF
>> >
>> >> On 8/12/2017 10:11 PM, Marcus B wrote:
>> >> I'm about to go on a hike through Tassie (Overland Track) in a few
>> >> weeks, and I've been thinking about taking my VX8 with me and attempting
>> >> a few posits along the way, is there anyone in earshot of the ISS
>> >> SatGating around there? Any other aprs sats worth giving a go?
>> >>
>> >> 73,
>> >> Marcus
>> >>
>> >>
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>>  
>> 
>> 
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> 
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