---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" <[email protected]>
To: "Wayne Burdick" <[email protected]>; "Elecraft Reflector"
<[email protected]>; "[email protected]"
<[email protected]>
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 <[email protected]>
To: Elecraft Reflector <[email protected]>;
"[email protected]" <[email protected]>
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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