[Moon-net] Activity report 8-9 sept. de SM5LE

[Edward Cole]

Vlad,

I'm not yet QRV for 23cm but find your remarks 
interesting.  They would imply that the minimum 
dish size to work a similar dish is 4m?  This 
surprises me as I always heard (thought) that 3m was the minimum for 23cm+

I'm glad that I chose to keep the 4.9m dish vs. 
the 2.4m for use on 23cm.  I have both.  It is my 
plan that the 4.9m will see use on 23 - 9cm and 
the 2.4m dish be used for 6 & 3 cm.  (I have 
equipment for 23, 9 and 3cm for eme...other bands come much later)

I will not get the 4.9m dish installed this year 
(unfortunately not enough time/money).  Summer 
was consumed in building a small barn/shed and I 
will be lucky to get some of my ham antenna 
projects done before winter (6-weeks from now).

73 Ed - KL7UW
QRV 144 eme

At 03:40 AM 9/10/2007, vladimir.masek at volny.cz wrote:
>Hi Sven,
>do not be so sad. You can share experience e.g. with LA9NEA and others
>with 2 to 3 meters.
>If you take into account the fact that 2.2m dish vs 4.4m is a double^2,
>you would need to have 4x more rf pwr to get signal comparable with
>their echoes !
>Be sure that the others with such bigger dishes would take much more
>attention about you when having 1 kW !! On the other side, it is not
>as easy to create such heat, hi.
>So, you have to accept only bigger guns with 6m and over to be your favorites
>and the smaller would need a sked or think about higer frequency (?).
>
>That's life and our experience at OK1KIR (4.5m dish, f/D=0.42 with very
>similar feed)confirmed that many times.
>In others words it becomes very hard to break physical axioms and nowadays
>really each one dB counts in and makes difference.
>We tried to breach physic on CW with Rex, VK7MO without success. BTW,
>JT65C signals were great both sides, hi.
>GL,
>Vladimir
>OK1DAK/OK1KIR EME crew
>P.s.
>FYI, we are getting your signal from M to O level at maximum but were
>off for ARI contest.
>
>
>
>----- PÙVODNÍ ZPRÁVA -----
>Od: "SM5LE" <sm5le at telia.com>
>Komu: "MOON_NET" 
><moon-net at list-serv.davidv.net>, "Moobounce" <moon at moonbounce.info>
>Pøedmìt: [Moon-net] Activity report 8-9 sept. de SM5LE
>Datum: 10.9.2007 - 12:26:20
>
> > "High degradation hits small dish" is the headline
> > for this week end.
> >
> > Sutter day was reasonable with 5 QSO: s in 6 hours.
> > BUT Sunday was very bad 1 QSO in 7 hours !
> > Why is that so? Is one way propagation possible even
> > with circular pol ?  (Something else than Faraday)
> > or was it just that the high degradation, 1.8 dB,
> > is significant for a 2.2 m dish ?
> >
> > 1st day worked: G4CCH, RW1AW, IW2FZR, OK1CA, DF3RU
> > and F2TU.
> >
> > 2nd day worked: only ON7UN.
> > Hrd and called like hel.. sorry , like very much was:
> > SM4DHN, K1RQG, K9SLQ, K5JL and K5SO. (Do I hear to
> > good for my 250 W @ feed?)
> > Hrd in QSO: SV1OE and SP6JLW.
> >
> > The Sked with K0ALL was NIL. First sked time I was
> > not QRV because I did not get any sked list. Was looking
> > on Internet for K1RQG: s sked list but find only old
> > ones. Now I have find out that I should ask for a
> > "membership" on a mail list "Net Notes by K1RQG" (thanks
> > info Howard).
> >
> > CU next time in low degradation and high declination
> >
> > /Sven SM5LE
> >
> > Ps What the difference between MOON_NET and Moonbounce
> > mailing lists?
> >
> >
> > -----------------------------------------------------------
> > SM5LE in JO99bd
> > 2.2 meter mesh dish F/D=0.34
> > Septum feed OK1DFC. With choke ring.
> > 250 W @ feed , CW ( 200W JT65 )
> > Spid RAS rotator with MoonSked software by GM4JJJ
> > Rig : TS-2000X (with 1296 MHz module).
> > LNA : NE32684A cavity NF ~0.3 dB
> > 8 dB sun-noise
> > CW SSB JT65
> > 1296 MHz only
> > -----------------------------------------------------------
> >
> >
> > _______________________________________________
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> >
>
>
>
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