[hpsdr] Active Antenna

[Henry Vredegoor]

(Posted privately to Rick before, I intended it to go to the Openhpsdr 
mailinglist too.....)

Hello Rick,

That's just what I did after I found his website hearing from Clifton
Laboratories in your conversation during the Teamspeak session. I
mailed Jack and unfortunately he is not willing to sell the bare pcb
or pcb + parts as a kit at this moment.

For me this means I will be going on with my original plan and
experiment with the circuit in the doc I pointed to, see if I can get
the parts for cheap from Ebay or so.

I agree with you that his website is very informative, read a lot of
interesting things there (not yet finished reading all of it). His
kits seem indeed of very high quality and well documented. Maybe I
will buy from him some time in the future.

Hope to hear from your experience with this active antenna.

73's,

Henry.


>  Richard Stasiak schreef:
> > Hi Henry
> >
> > It's interesting how the various areas of amateur radio
> > experimentation overlap.  I brought up the item about the active
> > antenna project just to put in some filler into the "show and tell"
> >  segment of teamspeak and was surprised at the interest.
> >
> > The construction of the active antenna kit is going well.  I have
> > the power supply completed and have populated the antenna amplifier
> >  board. The amp board is working and I want to make a few
> > measurements of it's performance before I install it in the
> > enclosure and move it outside.  I will keep the list informed on
> > how it is working and my opinions of it.
> >
> > As usual, with Jack Smith's kits everything is first class.  The
> > components, boards and documentation is right up with the best of
> > them.
> >
> > I would encourage you to contact Jack directly and ask him if you
> > can get just an amp board and components. He may be open to  this.
> > I do know that he has had an enthusiastic response from the ham
> > community to this project.
> >
> > For everyone who is wondering what this is about.  Here is a link
> > to website for this active antenna.
> >
> > http://www.cliftonlaboratories.com/z1501_active_antenna.htm
> >
> > BTW there is a wealth of knowledge and information that Jack has
> > shared with the amateur community on his website.  Well worth
> > digging into.
> >
> > 73
> >
> > Rick ve3mm
> >
> >
> > On 20-Mar-10, at 6:39 PM, Henry Vredegoor wrote:
> >
> >> ***** High Performance Software Defined Radio Discussion List
> >> *****
> >>
> >> Hello All, (Rick, Phil),
> >>
> >> Listening to the latest Teamspeak and being temporarily very
> >> restricted wrt. antenna's, the subject of  "Active Antenna's" in
> >> the conversation between Rick VE3MM / Phil VK6APH immediately
> >> caught my attention. I studied the website of Clifton
> >> Laboratories and found a lot of interesting info on it. I already
> >> was thinking about building a design something like described in:
> >>
> >>
> >> 
http://home.earthlink.net/~christrask/Complementary%20Push-Pull%20Amplifiers.pdf
> >>
> >>
> >>
> >> Looks similar wrt. output stage, input stage is different. The
> >> design by CL looks a lot more robust and tweaked HF wise though.
> >>  Unfortunately Jack currently doesn't sell the active antenna as
> >> a board + parts kit, the kit as offered is too expensive for me.
> >>  Would be interested in the results in combination with Mercury.
> >>
> >>
> >> 73's,
> >>
> >> Henry.
> >>
> >>
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> >
>



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