[Hallicrafters] 40 m antenna used on 80 m - what to expect?
Jim Brannigan
jbrannig at optonline.net
Fri Oct 3 08:43:06 EDT 2008
Had to laugh, yes ignorance was bliss.
I recall the novice goal was to get any wire outside, feed it with something and transmit.
Making ANY contacts made it a good antenna!!!
I remember Harrison Radio on Greenwich St. with rows of Collins gear
Jim
?
Skip,
Sometimes ignorance is bliss. (my ignorance, in this case).
Upon receiving my Novice class ticket in 1960 I immediately put up a 40M dipole about 25' off the ground and fed
it with 70' or so of RG-59 directly to the pi-net output of my just completed Knight Kit 50 watt transmitter.
I had two 40M crystals & had a great time. The SX-99 was connected to an 80' #12 copperclad longwire (the wire still
had the 'set' and coiled back up close to original shape when I took it down 9 years later). Didn't have to worry
about an antenna change-over relay - just turned down the RF gain on the SX-99 when transmitting.
Of course, both antennas were erected during a snowstorm - can you think of a better time?
Anyway, after about 3 weeks on the air I got the bright idea that 80M could be real fun, so I went over to
Harrison Radio (225 Greenwich St., in Manhattan and picked up two 80M xtals & proceeded to run the Knight straight
into the 40M dipole on 80M. No problem. Didn't know what the swr was (no swr meter); didn't know how many of the 35 or so input watts
showed up at the antenna (no wattmeter) but I worked up & down the east coast from NY; out to the midwest (Chicago, Detroit, St. Louis).
Had more fun on 80 than on 40. Less qrm andmore slow-speed guys to chat with.
Only problem was with harmonics. My 3704kc xtal doubled to 7408kc and careless dipping one day to the harmonic
earned me a 'special official reception report' from the FCC. Solved that by more careful tuning and a harmonic trap courtesy
of QST.
Bottom line - give the 40M dipole a try on 80 and you might be surprised. Have fun.
73
Ollie
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