From: Rick Wakatori <7l1rll@dp.u-netsurf.ne.jp>
To: rsgb_lf_group@blacksheep.org
In-Reply-To: <BLU146-DS602CCD96606FA9CA55EE0CF8D0@phx.gbl>
References: <57a24ca70912090730q682ffc79g7ffa9582e0cc40fa@mail.gmail.com>
	 <20091210100700.32DEC31E703@smtps01.kuleuven.be>
	 <1260444821.6353.65.camel@vaio3rd>
	 <BLU146-DS602CCD96606FA9CA55EE0CF8D0@phx.gbl>
Organization: RLL
Date: Thu, 10 Dec 2009 21:58:41 +0900
Message-Id: <1260449921.6353.77.camel@vaio3rd>
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Subject: Re: LF: AW: TX-2200A
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Hi Laurence and the others,
  OKay. I will operate QRSS60 at 137780Hz as long as possible on 13th
December. My antenna at there will be much suitable than usual.
73, Rick
--=20
-.. .  --...  .-.. .---- .-. .-.. .-.. .-.-.
7L1RLL under ubuntu/Linux in Kawasaki,Japan(JP)
URL=3Dhttp://www1.u-netsurf.ne.jp/~7l1rll/radio.html
-..--- -.- .-.. ..-.. --. --. ...- .-... ...-.

On Thu, 2009-12-10 at 11:39 +0000, hellozerohellozero@hotmail.com wrote:
> Look forward to seeing the Signals Rik - The 13th will be my last weeken=
d of=20
> Ops in China, and will be returning to Oklahoma in January ,,,,,,,
>=20
> Laurence KL 1 X in BY3A
>=20
>=20
>=20
> --------------------------------------------------
> From: "Rick Wakatori" <7l1rll@dp.u-netsurf.ne.jp>
> Sent: Thursday, December 10, 2009 11:33 AM
> To: <rsgb_lf_group@blacksheep.org>
> Subject: Re: LF: AW: TX-2200A
>=20
> > I agree Rik's observation on the 100W limitation.
> >
> > Average CW operator is a KEY-technician without any science.
> > A good earth is essencial for LF operation, otherwise would get LF sho=
ck
> > at frame of transmitter.
> > Linear amplifier is based on self responsibility.
> >
> > There is another reason in a market place for such tranceiver in JP.
> > 100W/50W machine has much wider, say 100 times, of market place than=
 1KW
> > machine.
> >
> > In any way, there is still a high wall in front of a operator who
> > bought the machine, such tuner, good earth, good antenna and etc.
> >
> > In any way, I will operate QRSS60 using TX2200A/50W at 137780Hz+-1Hz=
 in
> > a peak of peninsular from 01:00UTC to 02:30UTC on coming Sunday,Decemb=
er
> > 13,20 or 27 depending on crimate.
> > 73,
> > --=20
> > -.. .  --...  .-.. .---- .-. .-.. .-.. .-.-.
> > 7L1RLL under ubuntu/Linux in Kawasaki,Japan(JP)
> > URL=3Dhttp://www1.u-netsurf.ne.jp/~7l1rll/radio.html
> > -..--- -.- .-.. ..-.. --. --. ...- .-... ...-.
> > On Thu, 2009-12-10 at 11:07 +0100, Rik Strobbe wrote:
> >> Stefan,
> >>
> >> there is one good reason to limit the output
> >> power 100W: more power could become lethal (high antenna voltages /=
=20
> >> currents).
> >> The "black box operators" must be protected
> >> against this danger, otherwise they might go QRT due to "natural=20
> >> selection" :-)
> >>
> >> 73, Rik  ON7YD - OR7T
> >>
> >> At 10:19 10/12/2009, you wrote:
> >> >Warren, LF,
> >> >Tnx for the info!
> >> >I am not "afraid" that now many OMs come on the
> >> >band who just bought their rig, like on HF. Even
> >> >if you could buy a loading coil, you never will
> >> >get qrv satisfactorily cause you always have to
> >> >consider many things like the earth, the local
> >> >noise reduction, the impedance transformation to 50 Ohm and so on.
> >> >These OMs, even if they could buy a automatic
> >> >tuner (that would not be easy to create as a
> >> >commercial product) for LF, would be frustrated
> >> >soon cause there are no contests and no 100s of
> >> >stns calling on the band ;-) They would say "LF
> >> >is dead, just nerving qrm" and would never get
> >> >the fascination that we all experience.
> >> >Finally I don't understand why this PA has just
> >> >100W. To reach 1W ERP, most LFers have to apply
> >> >1kW and more, so 100W is QRP on LF ;-). 1kW can
> >> >easily be reached on LF without using expensive
> >> >special transistors and drivers and ferrite
> >> >cores. E.g. with one simple IRFP360 we can built
> >> >a 1kW high efficiency calss d or e PA that costs not even 50=E2=82=
=AC...
> >> >These difficulties to get qrv is one part of the
> >> >LF hobby and if they are solved, one can be glad
> >> >even without doing 100s of qsos in one evening :-)
> >> >
> >> >Stefan / DK7FC
> >> >-----Urspr=C3=BCngliche Nachricht-----
> >> >Von: owner-rsgb_lf_group@blacksheep.org
> >> >[mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Warren=20
> >> >Ziegler
> >> >Gesendet: Mittwoch, 9. Dezember 2009 16:30
> >> >An: rsgb_lf_group@blacksheep.org
> >> >Betreff: LF: TX-2200A
> >> >
> >> >Interesting new rig offered by Waters and Stanton - the TX-2200A 100
> >> >Watt class D transmitter for 136kHz - VFO controlled with receiver
> >> >muting.
> >> >Made in Japan, relatively pricey though at 690 GBP!
> >> >
> >> >http://wsplc.com/pdf/TX-2200A.pdf
> >> >
> >> >
> >> >
> >> >73 Warren K2ORS
> >> >                 WD2XGJ
> >> >                 WD2XSH/23
> >> >                 WE2XEB/2
> >> >                 WE2XGR/1
> >>
> >>
> >
> >
> >
> >=20
>=20