[Elecraft] Further K3 development

Fri Feb 13 12:47:52 EST 2015

I hope some side by side specs show up,  like I mentioned to upgrade for 
me would
be 800 bucks,  2 radios,  not going to do that without some solid proof 
of what I am
getting,   no complaints at all,  just like to see what I should expect.

How about a new mixer board?   Present one can be improved quite a bit 
with some
newer 50- cent chips like the FSA3157.    with better specs than the 
I7SWX mods
and much less complicated,

Still some room to improve the K3,  so thanks Elecraft for working to 
keep it up to date.
73 Merv K9FD/KH6

> Dear OMs,
>       I will follow this thread for a while.   It would be nice to know more
> about the performance enhancement as Johnny Siu has stated.
>
>       What I am really chuffed about is that Wayne, Eric and company are
> enhancing a radio which has been on the market perhaps seven years now.
> Oh I like the modular design and construction and I love the company.
>
>       The K3 is not being made obsolete but it is being updated right back to
> SN 1 - My friend Brendan Minish, EI6IZ can update SN 42 and no doubt he
> will.    I will be contacting Brendan to see what he thinks.
>
>        Good going guys, my loyalty is rewarded yet attain.   If I can be
> jingoistic it is nice to see an American company performing in this manner.
> The edge is not lost.   Great to see the engineering continue to evolve the
> K3 - thank you.
>
>                   73 Doug EI2CN
>
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Terry
> Hart
> Sent: 13 February 2015 14:39
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] Upgraded K3 synthesizer module now available:
> TheKSYN3A
>
> ---and I just received my K3 kit serial number 8795. I had no idea this was
> coming up!
> The extended receiver tuning down to 100KHz sounds
> interesting....what are the front-end filtering arrangements for that, I
> wonder? And it would be interesting to see some comparative close-in phase
> noise plots.
>
> Terry G3VFO
>
>
> ----- Original Message -----
> From: "Harry Yingst via Elecraft" <elecraft at mailman.qth.net>
> To: "Wayne Burdick" <n6kr at elecraft.com>; "Elecraft Reflector"
> <elecraft at mailman.qth.net>; "Elecraft_K3 at yahoogroups.com"
> <elecraft_k3 at yahoogroups.com>
> Sent: Friday, February 13, 2015 1:17 PM
> Subject: Re: [Elecraft] Upgraded K3 synthesizer module now available: The
> KSYN3A
>
>
>> Dang, I just put the sub receiver in last week.... I should have waited
>>
>>
>>
>>       From: Wayne Burdick <n6kr at elecraft.com>
>> To: Elecraft Reflector <elecraft at mailman.qth.net>;
>> "Elecraft_K3 at yahoogroups.com" <elecraft_k3 at yahoogroups.com>
>> Sent: Friday, February 13, 2015 1:07 AM
>> Subject: [Elecraft] Upgraded K3 synthesizer module now available: The
>> KSYN3A
>>
>> The KSYN3A synthesizer module for the K3 is a completely new design that
>> improves on the original KSYN3 in several ways. All K3s shipped on or
>> after January 23, 2015 already include the new synthesizer (serial number
>> 8801 and later).
>>
>> See feature list below. Ordering and installation instructions can be
>> found here:
>>
>> http://www.elecraft.com/order_form_parts.htm#K3%20Parts
>>
>> * * *
>>
>> NOTE: If you wish to upgrade a K3 that includes the sub receiver (KRX3),
>> you'll need two (2) KSYN3A modules, since the synthesizers for both
>> receivers must be of the same type.
>>
>> * * *
>>
>> KSYN3A FEATURES:
>>
>> * FASTER CW BREAK-IN AND MORE ACCURATE CW TIMING
>>
>> A dedicated coprocessor on the module permits faster transmit/receive
>> switching, improving CW timing accuracy with both internal and external
>> keying. This also speeds up receive recovery between elements.
>>
>> * ULTRA-LOW PHASE NOISE
>>
>> The KSYN3A significantly improves the K3's already excellent receive and
>> transmit phase noise characteristics at close carrier spacings. This, in
>> turn, improves its close-spaced receive dynamic range, yielding even
>> better weak signal detection in the presence of strong signals. In
>> transmit mode, the KSYN3A keeps the signal exceptionally clean, further
>> enhancing K3 performance at multi-transmitter stations, Field Day and
>> DXpeditions.
>>
>> * 600-METER COVERAGE
>>
>> The new synthesizer provides complete coverage of 600 meters -- and below.
>> VFO tuning extends down to 100 kHz, with sensitivity gradually falling off
>> below 450 kHz. Receive sensitivity (MDS) at 475 kHz is typically -120 dBm
>> at the RX ANT IN jack. Transmit output of about 1.0 mW is available for
>> use with a suitable external amplifier. (Note: 600-m allocations vary by
>> country. Operation on this band requires the KBPF3 and KXV3 options. For
>> receive-only use, an antenna can be connected to the RX ANT IN jack on the
>> KXV3 module. For transceive operation with an external amplifier, use the
>> XVTR IN and XVTR OUT jacks, and set CONFIG:KXV3 to TEST.)
>>
>> * EXCELLENT MECHANICAL STABILITY
>>
>> The KSYN3A is virtually immune to both physical vibration and magnetic
>> coupling, and operates over a very wide temperature range with no change
>> in performance. K3 kit construction is simplified, as the KSYN3A requires
>> no alignment of any kind.
>>
>> * * *
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>>
>>
>>
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