Galvanized Fe material is problematic from an R standpoint as well (vs.
Cu). This results in a "lossy" ground plane. That condition has real
impact the effectiveness of the antenna system, when compared to an
all-Cu (or at least a lower-R metal) plane.
Immediately perceived consequence of
On BC MW AM installations, I use 15% Ag StaySilv bars for brazing
radials together, or to a common feed/EQ strap ring at the base of the
antenna, or strap running along a center line between two members of an
array where the radials will intersect.
I'll use alternately a Oxy/MAPP torch set,
Congrats indeed!!
Seconding Rick's comment below -- AM towers make REAL lousy RX
antennas. They catch ALL* the front-end-pulverizing noise on 160/80.
Been there, done that... well, OK, not the dxpedition part. But I
have occasionally at night borrowed a few AM Daytime-Only auth'd
On 9/9/2013 10:33 AM, James Rodenkirch wrote:
Listening to a fella on 80 SSB this morning about his experiences with a
vertical 1/4 wave and a horizontal loop on Top Band.
He said he had both up and used them over a 20+ year period and noticed that
one would work better than the other for DX.
Doom/boom politics aside, it seems to be interesting data to examine
nonetheless. I'll not dare knock propagation research, so long as it's
carried out within good radioscience.
Agreed that the claim of T driving H(ionosphere) is a bit strange...
at least it's the first time I've seen
Thanks for the link!
There's a ton of good stuff in this paper for the 137kHz experimenter,
or anyone else who is concerned about the D-Layer.
73,
- Josh / KF4YLM
On 8/5/2013 10:31 AM, donov...@starpower.net wrote:
This is the original research paper:
ITU Region 3 purportedly (according to the world spectrum chart in the
office) allows radiolocation, radionavigation, and fixed and mobile
commercial services on a secondary basis to amateur communication.
Regions 1 and 2 have amateur service listed as exclusive from at least
1810 - 1850
