A. 200W is for the USA only so dont go preaching to an "alien"
B. CW and all data modes are legal on 30M and that includes that RYRYRY
stuff.
C. Its a very popular QRP CW band as well as lots of DX chasing at all power
levels. All DXpeditions include 30M.
D. The TL-922 will have to be used in the 20M position otherwise no power
will get thru the tuned input and outputs. The input bandwidth will probably
work to some degree with some help from an ATU but I dont know about the
output tank. Most tuned input amps Ive tested will cover 30M at around 50%
efficiency. Others using broadband resistive inputs run close to full bore.
E. Im approaching 300 DXCC on 30M CW with 100-150W and its also my usual QRP
band with a 1934 National FB-XA and 1938 Meissner Signal Shifter at 5W.
Antenna is the parallel 160/80M inverted vee without an ATU.
Carl
KM1H
----- Original Message -----
From: "Ron Youvan" <ka4inm@tampabay.rr.com>
To: "Steve Cook" <vaj4378@yahoo.com>; "amps" <amps@contesting.com>
Sent: Saturday, January 29, 2011 8:36 AM
Subject: Re: [Amps] I answered it.
> Hi Steve Cook:
>
>> The question I watching for an answer to was:
>> I the Q changes (because the tank L is set to a non optimal inductance
>> value) what happens to the voltages across the plate tune and antenna
>> loading capacitors.
>> The original question, as I read it, did not address open antenna
>> connections or the like.
>> So for me, if I want to operate on 10MHz with my Kenwood TL-922 amp
>> which does not have a setting for 10MHz -- do I need to operate at
>> reduced voltage to keep the tank voltages from soaring?
>> Did I get the question wrong?
>> I still don't know what the answer is.
>> What happens to the tank voltages when the Q goes up or down due to the
>> setting of the tank inductance???
>
> A well asked question. I didn't recall the original question.
> First we are allowed only 200 Watts, so 3dB over a 100 Watt transceiver
> will not be noticeable. If
> the "tank" is not resonant the efficiency will be extremely low, if the
> transformer ratio is
> incorrect (the two capacitors form a auto-transformer) because of the
> incorrect inductance the
> loading will be too high or too low, depending. The "plate tune"
> capacitor can easily arc at the
> capacitor, it is unlikely that the "loading capacitor" would arc as the
> load will remain across it.
> BTW: Wikipedia says "CW only" and the ARRL says "RTTY and data" ??? and
> it is only good for
> contacts within USA, so I see no use for using it without some special
> interest.
> --
> Ron KA4INM - If you have any criticism for me constructive or
> otherwise
> keep it to yourself, at my age I just don't care anymore.
> _______________________________________________
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> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
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