[Lowfer] Fw: Mini Whip (Roelof Bakker)

[LEE BAHR]

Andy and Howell:

The noise I have with a ham antenna not grounded and acting as a long wire 
is deafening.  It is man made coming from everywhere.  I need to tune the 
antenna whatever it is and get shielded line to outside the house.  I did 
turn off my computer but that didn't reduce any noise.  I hear some birdies 
and beat notes that are being created internally within my radio.  (Was 
using a FT-890 transceiver).  I have a new FT-950 and will try that tomorrow 
and see what birdies it has internally.

I just wrote, see below, the following to Steve Ratzaff on the same topic 
for the AMRAD antenna:



> Steve:
>
> I wrote Crystalonics about minimum orders.  I can't find anything listed 
> on their web site regarding minimums.  What is interesting is they have 
> the Sept, 2001 QST article on building the AMRAD Antenna on their web 
> site. They say add $5.00 for shipping within the US.  I suspect there 
> won't be any problem getting a CP-666  FET transistor.  The thing is made 
> by them and it has extremely low noise characteristics.  I am sure much 
> better then a J-310.  The CP-666 is $17.50 plus $5.00 shipping if they 
> will sell one.  I'm inclined to go with it if available.  The two FAR 
> Circuit boards for the AMRAD are $9.95 for both boards.  The special low 
> power line coupling power transformer is around $12.00 to $17.00 depending 
> on brand.  The article is worried about AC line coupling and like a 
> particular brand of transformer.  I am thinking of installing a line 
> filter before the supply.  I happen to have a couple around here someone 
> gave me.  They have three toroids and some caps in them and are in a box 
> around2 1/2 inches square.  This should also help reduce line coupling.  I 
> know I know.  The noise I have here right now is deafening and is coming 
> in on the unshielded feed line. AC line filtering is the least of my 
> present woes.  I am hoping up at my lake house, things will be much 
> better.
>
> Lee, w0vt
>
>
>