I really don't find those kinds of generalizations very constructive ...
or accurate. LOTS of hams live where putting up an additional kilobuck
worth of aluminum is out of the question due to space or neighborhood or
aesthetic considerations. An extra 3 db of transmit power can make a
noticeable difference for them without violating those other
considerations, especially if their local noise levels are low on
receive. Whether that is worth $1K to them will vary from ham to ham.
Besides, for many hams who already have decent antennas on a decent
tower, it would probably take considerably more than $1K to get that
extra 3 db out of more aluminum.
Lastly, if you don't think an extra 3 db can represent a significant
improvement on HF, check out http://www.ab7e.com/weak_signal/mdd.html
Anybody who is an active contester or DXer on HF will often find that
extra 3 db useful in a pileup.
73,
Dave AB7E
On 3/3/2014 9:14 AM, Jack wrote:
I have to wonder about the rationale of spending anything for that
extra 1/2 S-unit.
Over the years I have worked most weak-signal modes, including some
EME, so I understand there are instances where an extra db can make or
break a QSO but I can't imagine that happening often enough on HF to
make any difference at all.
I'd think it would be far better to invest that $1k+ in aluminum and
steel that will positively impact both receiving and transmitting.
Jack, W6NF/VE4SNA
On 3/3/2014 7:13 AM, Roy Morris wrote:
Those who already have a KPA500 it might be tempted to buy another
KPA500
(kit) to get 1 KW output. This would be a 3 db extra signal strength
at a
cost of approx. $4.20 per watt which would be very expensive. The
cost of
the combiner would also have to be considered. The combiner with a
dummy
load and imbalance trip circuit might be feasible to market at
approx. $500.
..Well I guess this is too expensive, but it surely would be nice to
have a
KPA1000 Elecraft linear amplifier. Roy Morris W4WFB
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