Stewart Baker skrev:
Drew,
Receive only antennas can really extract wanted signals out of a
mess of local electrical noise.
To be effective they need to have minimal coupling to the transmit
antenna, otherwise all the trash collected on the main antenna
appears on the receive antenna signal. This means a reasonable
distance between the two antennas which also helps to prevent
damage to the receiver front end, but with high RF power care is
needed.
A lot of receive antennas have low output so use a 20dB or so
pre-amp. It is possible that this could be killed with RF, long
before the rig suffers. Y.M.M.V.
73
Stewart G3RXQ
On Sat, 02 Feb 2008 10:38:36 -0500, [EMAIL PROTECTED] wrote:
I'm a bit confused about using a receive-only antenna. Comments
suggest that they could be destructive. Is it safe to use one on
the
K2 (the k160rx module) and/or k3?
73,
Drew
AF2Z
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Hi all,
I am looking for a receive antenna for 80 meter because of
high levels of white nise here in Stockholm City.
Any suggestions there to find good building instructions on
the Internet should be appreciated.
Best 73's,
Rolf - K2 #4979
SMØYQC
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