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Old November 19th 06, 07:04 PM posted to rec.radio.shortwave
[email protected] fcathell@msn.com is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 72
Default LF Engineering H-800 Skymatch active antenna

RHF - Your mounting idea was exactly what I was thinking of! I used
this technique in the distant past for a 2M J-pole antenna and it
worked well until they decided to re-roof the condo. All that was left
with a cut end of the coax! That should not be a problem here since it
is only an 8 unit complex and relatively few are home during the day.
I'm going to "RF probe" the roof on my next trip over in December and
see what results. At least the lead-in will come down in a very
"vegetated" area on the alley side of the place where no one will
notice. I've noticed the H-900 on Grove but wonder what the advantages
are over the H-800. If it is better at overloading and IP3 I just may
go with it despite the extra expense. I am tending away from a wire
arrangement due to the larger surface are and the horizontal
orientation over the roof and added noise pickup as such.

Frank
Tucson

RHF wrote:
On Nov 18, 4:55 am, "Steve" wrote:
wrote:
I'm thinking about using this antenna for a condo I bought in San Diego
recently. There is insufficient space for a decent wire antenna and I
know I can sneak this up on the roof without any issues. It would
probably be mounted on a pole about 5 feet above the flat roof surface
with feedline down the outside of the building and into the window.
There are no high rises or structures that will be higher than the
antenna in the immediate area. The nearest power lines are about 65
feet away, however, this is pretty much an suburban area with the usual
load of computers, TVs and other RFI generators. What experiences has
anyone had with this antenna in a similar situation? Thanks for any
responses or comments.


Frank
K3YAZ
Tucson


- Have you walked around on the roof with a portable to see
- what it's like up there noise-wise?
- I'd do that before ordering the H-800.

- I like the H-800, but are you sure there's no way to get
- a decent wire up there? Maybe a small loop, or a wire
- sloping from the roof to a support on the ground?
-
- Steve

Steve - Good RFI Sniffing Idea.

Frank -IF- You already have the LF Engineering H-800
Skymatch Active Antenna then take an extra 50 Foot
piece of Coax Cable and connect then all together to
your Receiver and then do the RF Sniffing with the H800
for the RFI Hot-Spots and Low Noise Areas.

Mounting the H800 about 5 Feet above the Roof is about
all that you can do without making it 'stand-out' as an
Item-for-Discussion at the next Condo Owners Association
Meeting . . .
* Take a 5 Foot piece of PVC Pipe that Telescopes over
an available Vent Pipe coming out of the Roof.
* Mount the bottom 3"-6" of the H800 by inserting and
rigging it into the Top-End of the PVC Pipe with the
Coax Cable going down the Center of the PVC Pipe.
* Drill a 5/8" Hole about and Inch above the top of
the Vent Pipe for the Coax Cable to come out of the
PVC Pipe.
This can give the H800 that "Stealth-Look"

just my two cents worth - iane ~ RHF
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