[NLRS] 10 GHz contest spreadsheet

Tue Oct 27 10:47:05 EDT 2015

Zack, Jon, and others,
I was running 12mW on CW into a 17db horn.  On RX I was running a mixer with a preamp built in, with another 17 db horn on it.  On RX I was using a Icom IC-t81 as IF receiver (1282MHz IF), so I could only copy NBFM.  My best DX was 128KM on 24 (per Pete's measurement).  I had two QSOs with Pete.  Zack was also very strong on CW, but I didn't think to have him slow down so I could have copied his CW on my FM RX until later in the day.  Sorry Zack, next  year I will be able to copy CW on 24!!!
Alex, NN9X was running a bare Kuhne mixer/xverter with a 1ft. dish (I think it's 1ft.)  I'm not sure what that mixer puts out, but my guess would be around 100uW.  I think Alex made a couple more QSOs across the lake than I did on 24, as he was setup before I was and I think he was able to work Pete and Zack from at least one more location than I could.
Bob, WA8VPD is running two separate dishes, I think about 1ft.  Bob is also running some power, but off hand I don't know how much.  I believe Bob was able to work Pete and Zack at many more spots than Alex and I were able to.
Garry, K3SIW was running a bigger dish.  Maybe 2ft, I'm not real sure.  Garry was able to work Pete from every stop all the way to the IL state line (at least I think that was the last place we worked Pete, I don't have my logs with me).
Signals on 10GHz were great all day, 24GHz did get weaker as the day went on.
73,Mark WB8TGY

      From: Zack Widup <w9sz.zack at gmail.com>
 To: Jon Platt <w0zq at aol.com>; NLRS List <nlrs at mailman.qth.net> 
 Sent: Tuesday, October 27, 2015 10:03 AM
 Subject: Re: [NLRS] 10 GHz contest spreadsheet

I think Pete K9PW and I were both running 1 watt on 24 GHz. We were roving
together. I use a 1 foot diameter commercially-made (Endgate?) dish and
Pete uses a larger offset-fed dish. His system performs a little better
than mine does on both bands.

My best DX on 24 GHz in this contest was 174 km (~106 miles). Pete may have
made slightly better. Conditions across the lake from Wisconsin to Michigan
were very poor on both bands on Saturday in September and much better on
Sunday.

Pete had one of Garry K3SIW's 47 GHz transverters with him. We listened for
Garry's 100 uW 47 GHz signal at two stops when we were maybe 75 miles from
Garry, who was in Michigan. We actually heard his signal for about 10 or 15
seconds at the second stop. Not good enough to work, but at least we knew
those small power levels on that band would sort of make it across the
lake. I was told later that a couple of the guys we worked on 24 GHz were
running on the order of 100 mW to small horn antennas.

73, Zack W9SZ

On Tue, Oct 27, 2015 at 7:44 AM, Jon Platt via NLRS <nlrs at mailman.qth.net>
wrote:

>
>
>
> Hi Zack -
>
> What kind of distances did you guys work on 24 GHz ?  How much power are
> you guys running?
>
> 73, Jon
> W0ZQ
>
>
> -----Original Message-----
> From: Zack Widup <w9sz.zack at gmail.com>
> To: NLRS List <nlrs at mailman.qth.net>
> Sent: Tue, Oct 27, 2015 7:31 am
> Subject: Re: [NLRS] 10 GHz contest spreadsheet
>
> I've been using the LM2940T-X.0 voltage regulators wherever I need
> alowervoltage. Usually the 9.0 volt ones but occasionally the 8.0 voltones.
> Forcircuits where I have determined that a low supply voltagewill pull the
> LOfrequency, I use a boost switching supply to generateabout 18 volts or so
> andthen use the LM2940T-12.0 to maintain 12volts and the others for
> lowervoltages. This has made the LO stayrock-solid down to 7 volts from the
> supplyat the expense of drawing alittle more current. The LO's are also
> phase-lockedto a 10 MHz OCXO.Activity along the Lake Michigan lakefront was
> nowhere nearwhat youfolks experienced in your area. I ended up with about
> 11,000points.But it was a blast and well worth it to make 18 QSO's on 24
> GHzinaddition to the 10 GHz ones.73, Zack W9SZ
> ______________________________________________________________
> NLRS mailing list
> Home: http://mailman.qth.net/mailman/listinfo/nlrs
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:NLRS at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

>
______________________________________________________________
NLRS mailing list
Home: http://mailman.qth.net/mailman/listinfo/nlrs
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:NLRS at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html