Further DX success with Roomcap
2009, UPDATE 13.Jan 2009
in Puerto Rico on 30m and 40m
Milton, WP4DQK in Puerto Rico sent me on the second day of this year
experience he made with the Roomcap antenna.
He is living in the center of the island, about 30 Km away from the sea.
Interesting is his possibility, to compare the Roomcap with a full size
1/4 wave vertical, and inverted V dipols, and Long Wire antennas.
Here his e-mail:
Re: hb9abx roomcap
mriutort at coqui.net
Fri, 02 Jan 2009 17:22:27 -0400
Felix Meyer hb9abx <FELIX-ABX at GMX.CH>
First of all, yes I build a three roomcap antennas with your
Actually all of them are out of service because of material used for
construction. I have problem finding the PVC plastic cover material and
used do not resist the outdoor weather here for long time.
Any way, the antennas demonstrate a very good performance against my
full size inverted V dipoles, verticals and the Long Wire here. The
signals report was obtained with the 40m band model. I compare it side
with the full 1/4 wave vertical and sometimes specially during dayline
I can hear better on the RoomCap. The report are equal but not all the
Sometimes the full size vertical do a better job sometimes the RoomCap.
What I know for sure is that the antenna have a very low angle of
at least this appear to me. Other significant difference are the signal
to noise level
that RoomCap always demostrate better than the full size Vertical here.
40m antenna installation:
Both antennas were on the Roof of the house. The Vertical full size one
using the metal fence of the roof as the counterpoise, no ground to the
It works like a elevate Ground Plane. The RoomCap is installed into the
but use another counterpoise that is smaller and not grounded to
By the way the 30m model was also installed there and both together
work very well.
It has the same ability to listen better from Europe on dayline
I remember that I sometimes can copy EU station on the RoomCap that
on the Inverted V dipole.
I need to say that this antennas have a very different signal capture
and in the dayline they can do a better DX antenna job, even better
full size verticals or inverted V dipoles. They also demonstrate a
signal to noise values. I guess that the small physical size help on
The QRN on the Caribbean are always strong than on other latitudes and
roomcap help with this.
The ability of listen better sometimes during dayline time make it
for chasing DX. The same way ham use different antennas for different
location or operating time, the RoomCap should be include on the
I hope that you
are in a good health this time and hope that this new year give
us a much better health. We talk about this before.
Happy New Year 2009
Best wishes / 73
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2009: Now on 80m
Roomcap from Puerto Rico
On the 4th of January 2009, Milton, WP4DQK reported his 30m and 40m
Now he built the 80m version.
He compared with a 40m Long Wire antenna and received the
better results with the
Roomcap antenna of 2m size!
(2 Operators: Milton WP4DQK, and Alberto WP4L)
Here this e-mail:
80m RoomCap model
"Milton Riutort" <milton.riutort at gmail.com>
Sun, 11 Jan 2009 15:52:04 -0400
"Felix Meyer hb9abx" <FELIX-ABX at gmx.ch>
We are working with a new RoomCap model for 80m band and we tested
it last night. We get very well surprise with it. For this band
we only have a Long Wire antenna, which is half wave long on 80m,
tuned with MFJ-969 inside the shack. This antenna always give us
good result to Europe and US Station.
The RoomCap was installed at the same place we put the other models
(on Roof Observatory) and for ours good surprise, both antennas have
the same signals, but sometimes the RoomCap goes 1 and 2 S units
Again, this is incredible good for this size radiating element.
How works? Incredible well. We tried to put on air as soon as possible
because we wanted to work some States Stations on North America QSO
yesterday night and we did. I worked 23 Stations (one VE2 in
Ontario) running 100W.
This was during watching TV and getting in and out of the shack by
small operating time.
I remember that only two stations do not copy me the first try and only
from West Virgina do not copy me at all with any of the antennas.
All the contact did with the RoomCap.
Passing the midnight Dad (WP4L) Start calling DX on the low part of the
and work tree EU station with 579 to 599 reports and another US
This morning, my Dad was working a Rod Island (Rhode Island) Station
that copy him
the RoomCap and loose him completely on the Long Wire antenna.
Again, this is not a scientific antenna test and a lot of things may be
the antennas, but the 80m RoomCap show a very hard contester against
the Long Wire.
I see up to 2 S units better signals on the RoomCap with some Stations.
Thanks for the good antenna and the lot of fun...
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