TD,

Here is another two items to consider in building your second SWL
Antenna up on, along, or under your Roof. Some good Information,
Photos and Diagrams can be seen on these two webpages.

* WiNRADiO Long Wire Adapter
- - - http://www.winradio.com/home/lwa.htm

* WiNRADiO AX-05E Long Wire HF Antenna
- - - http://www.winradio.com/home/ax05e.htm

iane ~ RHF
..
..
= = = (RHF)
= = = wrote in message . com...
TD,

The RadioMaster P30 Antenna is only 15 foot (4 m) Long and has a 15
foot (4 m) FeedLine Coax Cable with a PL-239 Connector.

You have stated that you plan on placing this new antenna on the Roof.

Plus you also state that you have already built a 50 Ft Random Wire
Antenna that is mounted on your Fence, with a Balun and Coax FeedLine.


IMHO: You have the skills to build your own "On-the-Roof" Antenna.

Measure the "Space Available" 'on' or 'under' the Roof to mount this
new Antenna.
* Consider an "On-the-Roof" Antenna that goes from one corner of the
Roof (up and over the roof) to the diagonal corner. (Greatest Length)
* Use "Insulated" Wire and the 'wire' will lay directly on the
surface of the Roof.
* Cut and Build and Antenna to Fill the Space Available.
* Use a Balun / Matching Transformer and Coax Cable FeedLine


Ready-Made: Here are some commercial antennas that may fit your
needs.
* RF Systems MLBA-MK2 = 66 Foot (20 meters)
- - - http://www.rys.nl/Mlba2.jpg
* Par Electronics EF-SWL = 45 Feet of Flex-Weave Wire.
- - - http://www.eham.net/reviews/detail/3632
* eHAM Wire and Vertical Antenna Reviews
- - - http://www.eham.net/reviews/products/13


iane ~ RHF
.
.
= = = "Tim ODonnell"
= = = wrote in message ...
Dan,

If I had the space I would put up a really fine antenna. However I don't so
I will do the best that I can. The homeade longwire does pretty good, but I
would like to cut down a little noise and also try to get better reception
of some of the weaker stations. I often think that I am only listening to
the biggies, but sometimes I get lucky and pick up an obscure one.

When I read the loggings here in the group I often try them and find only
white noise. Sure I realize that location also means something but I feel I
can probably do better. That's why I am asking about the P30. It doesn't eat
up a lot of space.

By the way I think that I may have used one of your suggestions when I put
up the 50 foot wire. Because I don't have that much space I strung it on my
fence using tv antenna wire standoffs to keep it off the fence. I put a
decent balun on it and it works fine and it's not really that visible. I
just wish the fence was higher. If I get the P30 I will leave the old one up
and string the P30 along the roof.

Comments?
Tim


"Diverd4777" wrote in message
...
Hi Tim:
- How much space do you have?

Putting up 200 feet of antenna & center feeding it into the receiver
with a
grounded coax will help with weaker stations..

Dan


n article , "Tim ODonnell"
writes:


Is there anybody using the Radiomaster P30 aka (NASA P-30) shortwave
antenna? I am using a throw together 50 ft long wire and I am wondring
about
the performance of the P30. Any information from users would be greatly
appreciated. The long wire works fine I am just thinking of upgrading.

Thanks!

Tim