[500kc] [Lowfer] Re: AMRAD Probe antenna part needed

riese-k3djc at juno.com riese-k3djc at juno.com
Thu Jun 12 14:41:41 EDT 2008


 
you have to forgive Dick as he is just getting over walking P Numonia
I believe he did build the Mini but tested it inside and found it wanting
I suggested he mount it outside and high as I believe the COAX acts as
a bit of the antenna as well,, not sure if he took my suggestion or not
has anyone tried to use it mobile// does the shorter mobile coax feed
mess up the performance 

Bob K3DJC 
On Thu, 12 Jun 2008 13:45:32 -0400 <stevesykes at rochester.rr.com> writes:
> The PA0RDT Mini-whip performs quite well with low cost components.
> Steve W2SES
> ---- Richard Goodman <wa3usg at verizon.net> wrote: 
> > Hey Andre!
> > 
> >     They will have to pry my dead, cold, hands from around my 
> AMRAD E-Field
> > probe to take it away from me!
> > 
> >      Almost 8 years now and still going strong!
> > 
> > 73
> > Dick, WA3USG
> > 
> > 
> > -----Original Message-----
> > From: lowfer-bounces at mailman.qth.net
> > [mailto:lowfer-bounces at mailman.qth.net]On Behalf Of andre 
> kesteloot
> > Sent: Tuesday, June 10, 2008 3:50 PM
> > To: The email list for the ARRL 600 Meter Experimental License 
> Group
> > Cc: lowfer at mailman.qth.net
> > Subject: Re: [500kc] [Lowfer] Re: AMRAD Probe antenna part needed
> > 
> > 
> > Jim,
> > 
> > Crystalonics is still making the FET available to hams and now 
> includes
> > the QST article on their web site.  See
> > http://www.crystalonics.com/jfets.html
> > 
> > 73
> > André N4ICK
> > *****************************
> > James M. Walker wrote:
> > > Hi Jay,
> > > Yes I have an ample supply of the J310 devices here, all in 
> TO-92 package.
> > > As the AMRAD Probe was a "loaner" for evaluation purposes only, 
> I want
> > > to repair it to original form before returning it.
> > >
> > > As an aside, I also ran some evaluations on "different" devices 
> in RX
> > > antenna
> > > applications and found that, put simply the best approach so far 
> has been
> > to
> > > "Amplify the Crap" out of the "received spectrum at the antenna" 
> then pipe
> > > it
> > > down to the receiver location, and filter it through band-pass 
> filters to
> > > remove
> > > as much of the unwanted spectrum as necessary, and apply a 
> narrow
> > bandwidth
> > > amplifier for the segment I want. That is another story 
> altogether.
> > >
> > > This request is just to repair back to original components, for 
> return to
> > > the
> > > lender.
> > >
> > > Thanks for the info, much appreciated.
> > > Jim
> > > WB2FCN
> > >
> > >
> > >
> > _______________________________________________
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> 
 
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