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HB9ABX > ANT 01.05.06 23:28l 64 Lines 1419 Bytes #999 (90) @ WW
BID : IYLV9SHB9EAS
Read: GUEST DJ9UI DL7NDF DJ9AO DJ4TZ
Subj: New antenna version
Path: DB0FHN<DB0NOE<DB0GAP<DB0KFB<DB0SIP<OE9XPI<HB9EAS
Sent: 060501/2123z @:HB9EAS.CHE.EU [Basel JN37TM] DP6.00 $:IYLV9SHB9EAS
From: HB9ABX @ HB9EAS.CHE.EU (Felix)
To: ANT @ WW
Additional version of the RoomCap Antenna:
2 band version for 20m and 30m.
Here are the measured values:
SWR when antenna is set for 30 m:
SWR Frequency
2.0 10.010
1.8 10.028
1.6 10.044
1.4 10.060
1.2 10.080
1.1 10.095
1.0 10.106
1.0 10.145
1.1 10.155
1.2 10.168
1.4 10.190
1.6 10.210
1.8 10.228
2.0 10.255
SWR when antenna is set for 20 m:
SWR Frequency
2.5 14.000
2.0 14.030
1.5 14.076
1.3 14.105
1.2 14.118
1.1 14.124
1.0 14.140
1.0 14.170
1.1 14.183
1.2 14.196
1.3 14.215
1.5 14.240
2.0 14.295
2.5 14.350
Values measured with MFJ-269 with 1.5m coax between
antenna and feedpoint, measured on 1.5.2006
The SWR position 1.0 can be set for any frequency
within the band.
By using the Remote Frequency Adjustement (RFA), the
SWR 1.0 is changed from 14.000 to 14.300 within 3 seconds.
This antenna version as well as the RFA are part
of the construction guide.
The picture of this antenna, as well as of the RFA are found
on my homepage (Google : hb9abx ).
Best 73s
Felix HB9ABX
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