T2FD
-- a match for any antenna
Tests were
conducted at the home of Fred Carlisle, a DXer from rural Yelm,
Washington. Nearby his home is a large dairy, whose processing
equipment operates day and night and generates some amount of
electrical interference. The noise was rarely audible on the T2FD,
yet signal strengths were comparable to (or better than) the other
antennas in use, on a range of frequencies:
The 500 ft.
and 50 ft. antennas were switched in and out of the receiver's
high impedance input, the T2FD fed the 50 ohm coax input. The
receiver used was a JRC NRD525 with a custom, highly accurate
analog Smeter. The meter is calibrated to the industry standard
Sunits/microvolts scale.
As the results
show, the T2FD antenna did not begin to drop off in performance
until down in the 120 meterband. This is well below the 60 meterband
design frequency of this particular T2FD.
FREQ/STN
|
T2FD
(NW-SE)
|
50'
(N-S)
|
500'
(E-W)
|
17680
RNZ
|
S9
|
S8-S9
w/buzz
|
S9
w/buzz
|
17700
RM
|
S7S8
|
S7
w/buzz
|
S7
w/buzz
|
17795
RA
|
S8
|
S6-S7
w/buzz
|
S7
w/buzz
|
15440
RBI
|
S6S7
|
S6
w/loud buzz
|
S6
w/loud buzz
|
15435
BSKSA
|
S7S8
|
S7
w/loud buzz
|
S7
w/loud buzz
|
15330
RAI
|
S5-S6
|
S5
w/loud buzz
|
S6
w/loud buzz
|
12085
RD
|
S8-S9
|
S8S9
slight noise
|
S8-S9
slight noise
|
11955
RJ
|
S9+10dB
|
S9-C9S8
|
S9+10dB
|
11940
RJ
|
S8
|
S9
|
S9
|
11505
RB
|
S4-S5
|
S4
moderate noise
|
S4-S5
slight noise
|
9895
RM
|
S9+10dB
|
S7
|
S9
|
9425
VoG
|
S6-S7
|
S5
|
S6
|
9375
RT
|
S8
|
S6
slight noise
|
S7
slight noise
|
7355
WYFR
|
S8-S9
|
S6-S7
|
S7
|
7335
CHU
|
S8-S9
|
S6
|
S7S8
|
7255
VoN
|
S7-S8
slight noise
|
S5-S6
mod. noise
|
S6S7
slight noise
|
6165
RN
|
S9+15dB
|
S9+10dB
|
S9
|
6150
Rl
|
S7-S8
|
S7
|
S6
|
6135.4
RFO
|
S7S8
|
S6
some noise
|
S6
|
5030
TBC
|
S5
slight noise
|
barely
audible
|
S5
slight noise
|
5000
WWV
|
S9+10dB
|
S9+10dB
|
S9
|
4985
R.Bras.Cent.
|
S5
|
S5
|
S6
|
4915
Anhanguera
|
S4S5
|
S5
noisy
|
S5
some noise
|
4885
O. del M.
|
S6
|
S6
slight noise
|
S6
slight noise
|
4865
L.V. de C.
|
S6
|
S6-S7
|
S5-S6
|
4765
RM
|
S7
|
S7
slight noise
|
S6S7
|
3990
VOA Liberia
|
S4-S5
|
S5
|
S5
|
3975
BBC
|
S5
|
S5
|
S5
|
3330
CHU
|
S5
strong noise
|
S5
strong noise
|
S5
strong noise
|
3385
Rebelde
|
S5
|
S5
some noise
|
S6
some noise
|
2500
WWV
|
S6
|
S6-S7
some noise
|
S8
|
1610
TIS stn.
|
S5
|
barely
audible
|
S8S9
|
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