[600MRG] [Elecraft] Upgraded K3 synthesizer module now available: The KSYN3A

[Edward R Cole]

Elecraft is offering an upgrade to their synthesizer in the K3, here 
is the release (copied from the Elecraft Reflector):

* * *

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.

* * *
     http://www.elecraft.com/order_form_parts.htm#K3%20Parts

Cost is $189.95 and if one has the KRX3 sub-receiver two new synth 
boards must be installed, doubling the cost.  So it will be awhile 
before I can afford $379.90.  But this is way better than building a 
transverter to operate lower than 490-KHz (old lower freq limit on the K3).

Tx output is 1.0mw as before so one will need amplification following 
the K3.  My 100w NDB transmitter drives with 0.1mw.


73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
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