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at each of the respective feed points, and the
other ends of the quarter wave fastened to
the common feeder. His watt-meter shows
remarkably satisfactory swr.
Incidentally, either bamboo poles or
fiber-glass radials may be slipped into the
short. slotted aluminum arms of the spider
and a non-skid hose clamp secures the radial.
The width of the tower shown in the
photo was such that only one foot could be
placed at a time on any cross-member. The
other leg and one arm were draped around
the tower during the erection of the quad,
and the free hand was used to put the thing
in place. The necessary tools had previously
been placed in accessible pockets. The tower
was not of the tilt type.
If an old man can assemble, erect and
tune this boomless three-band quad without
assistance, you younger Iellers should be
able to obtain similar satisfactory results.
Recently a station reported an S-8 signal
off the back of the quad, but 20 over S-9
from the front. Not bad!
It is understood that fiber-glass radials
now come in four-foot sections whose ends
slip readily into each other, and are mailable
by parcel post. At this point it may be of
interest that I and my supervisor inaugurated
the Parcel Post System in 1913 after trials at
Chicago, St. Louis and New York to obtain
size, weight and cost data.
If and when I can secure an aluminum
welder (electric), I may be able to furnish
this composite spider (and radials). That,
however, was not the intended goal when
this No. 13 boomless quad was designed.
Acknowledgement is hereby made to
W4TZ for his assistance in designing the
angle of the spider and having the first two
prototypes made; also to C. D. Bently for
photograph.
. . . WA4VWY
Mosley 80M Dipole Kit
The DlV-80 Dipole antenna is a complete
package designed as a regular or inverted vee
dipole for 80-IOM. It is rated at 2 KW
PEP or 1 KW on AM or CW. The Kit includes
140' of Copperweld wire, a Mosley Dipole
Connector (OPC-I) and two ceramic
end insulators. The Kit includes simple instructions
for pruning the antenna to the corect
length for the part of the band in which
operation is desired. It might be worth a
mention that many stations using inverted
vee antennas on 80 meters are working DX
with ease.
54 73 MAGAZINE