[SOC] A SOC Question

[mike l dormann]

now what is a tuner? take a piece of extension cord, put a connector on
it for hooking to the transmitter, and wind the other end around the coil
you plan to use as a tuner tank. wind some more of the extension cord
around the bottom of the coil (that already has turns on it from  the
transmitter> make the number of turns somewhat the same, connecting it to
the antenna feed line. since everything is link coupled, don't worry
about line impedances.

get a big condenser to tune the coil to resonance, and while hooking a 4
foot neon tube on the end of the antenna, tune the condenser for maximum
light from the neon tube 

thats the way i do it

mike w7dra
On Sat, 08 Dec 2012 06:25:25 +0100 john bell <f5vhc at free.fr> writes:
> 
> 
> The two tuners are not being used at the same time!!!! - or do you 
> mean 
> place?  One tunes the input to the linea to make sure the the rig 
> looks 
> into 50 ohms and the second one tunes the aerial to the linear which 
> 
> also makes the linear look into 50 ohms. Both are therefore 
> maximising 
> power transfer and reducing any high standing waves between pieces 
> of 
> equipment.
> You may well be able to disable the K2 tuner if the input impedence 
> of 
> the linear is 50 ohms - but if it isn't then run the tuner. There is 
> 
> absolutely no problem with running two ATU's in that configuration.
> 
> My surgery will be open at the normal time.
> 
> 
> On 08/12/2012 05:17, Tom McCulloch wrote:
> > Tnx Rocky...I'll disable the tuner in the K2.
> >
> > Tom
> > wb2qdg
> >
> >
> > On 12/7/2012 5:21 PM, Rocky Cookus wrote:
> >> I don't think it's a good idea to use two tuners at the same 
> time.  I 
> >> would
> >> just pass the signal through the internal and use the external 
> tuner 
> >> to get
> >> a match.
> >>
> >> On Fri, Dec 7, 2012 at 10:49 AM, Tom McCulloch <thom2 at att.net> 
> wrote:
> >>
> >>> Thanks for all of your help guys -- it's unanimous!!  I'll put 
> another
> >>> tuner between the amp and the antenna.  I have an old MFJ tuner 
> I 
> >>> can use.
> >>>
> >>> Tnx agn
> >>>
> >>> Tom, WB2QDG
> >>>
> >>>
> >>>
> >>> On 12/7/2012 10:13 AM, Tom McCulloch wrote:
> >>>
> >>>>      I generally operate QRP with an Elecraft K2 running about 
> 5 
> >>>> watts. I
> >>>> have a HFPackerAmp amplifier which can boost the output to 
> about 35 
> >>>> watts
> >>>> which I'd like to use from time to time.
> >>>>
> >>>>      My 40 meter dipole (my only antenna) is only somewhat 
> resonant 
> >>>> on 40
> >>>> and not at all resonant on on the other bands but the K2 has a 
> 
> >>>> built in
> >>>> auto tuner which brings the SWR into line.
> >>>>
> >>>>    So, the SOC question (which I should know the answer to, but 
> 
> >>>> then if I
> >>>> did I wouldn't be allowed on the SOC list) is, if I hook up the 
> amp 
> >>>> between
> >>>> the K2 and the antenna, will I have a problem because the amp 
> is 
> >>>> 'seeing'
> >>>> an antenna which is not resonant?
> >>>>
> >>>> Thanks
> >>>>
> >>>> Tom, WB2QDG
> >>>>
> >>>> SOC # hmmm, I forget
> >>>> 
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