[Elecraft] 6M Preamp

[Jim Cox]

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" <lists at microham-usa.com>
To: "'Ian White GM3SEK'" <gm3sek at ifwtech.co.uk>; <elecraft at 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: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ian
>> White GM3SEK
>> Sent: Thursday, October 23, 2008 6:23 PM
>> To: elecraft at 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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