Amen Joe. It is amazing the gripes you hear and the justifications for
them. The specs were advertised; if you didnt like them, why did you
purchase a K3?
I am a very satisfied K3 customer and I have used the K3 to work weak dx on
all the bands 160-6 meters.......... Jim K4JAF
----- Original Message -----
From: "Joe Subich, W4TV" <[EMAIL PROTECTED]>
To: "'Ian White GM3SEK'" <[EMAIL PROTECTED]>; <elecraft@mailman.qth.net>
Sent: Thursday, October 23, 2008 5:57 PM
Subject: RE: [Elecraft] 6M Preamp
The K3's sensitivity specification corresponds to a noise figure
of about 13dB. My K3 meets its sensitivity spec almost exactly,
That's the point. The K3 meets its specifications.
The K3 with a preamp is probably the best 6m receiver available;
but this high-end rig should have included a competent 6m preamp
and bypass relays on the original KVXV3 board, and not as a clumsy
afterthought.
You will never get agreement as to what should be included in
the KXV3 (transverter board) or the overall "package." Low band
fans will tell you the transceiver should include full receive
antenna switching (e.g., relays to allow the KRX3 to use the
transmit antenna while the main receiver uses the RX antenna
and/or allow each receiver to use a different low noise receive
antenna. There is simply is no room for the "other" functions
on the KXV3 and no justification for adding the extra cost (and
operational complexity) for features that will only be used by
a small fraction of users.
Elecraft have struck an excellent balance - designing a rig
with an equal level of performance across the operating range
and providing an interface (KXV3) that allows those who want
additional performance or features (better rx antenna switching,
higher sensitivity on 50 MHz, UHF/VHF transverters, KRX3, etc.)
to add them as needed and at reasonable cost.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ian
White GM3SEK
Sent: Thursday, October 23, 2008 6:23 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] 6M Preamp
gd0tep wrote:
>As some one who bought the K3 purely for it's RX performance
on 6m, can
>some one tell me once and for all if it is as good as, or
better/worse
>than, other radios like the Icom 756 pro etc... It was my
understanding
>from information provided that it was, is this not the case??
The K3's sensitivity specification corresponds to a noise figure of
about 13dB. My K3 meets its sensitivity spec almost exactly,
but at this
site it can barely hear antenna noise on 6m.
By contrast, the old IC-746 hears 6m antenna noise easily
because it has
a VHF-optimized preamp built in. Even that ageing mid-range rig has a
choice of two different preamps (and a third dedicated to 2m).
Of course it's still possible to work lots of weak DX on 6m using the
standard K3 receiver; but in the limit, some QSOs will be lost that
could have been completed with a more sensitive receiver.
The K3 with a preamp is probably the best 6m receiver available; but
this high-end rig should have included a competent 6m preamp
and bypass
relays on the original KVXV3 board, and not as a clumsy afterthought.
--
73 from Ian GM3SEK _______________________________________________
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