[Elecraft] K2 20 watt internal tuner

[Ron D'Eau Claire]

Note that the internal tuner cannot co-exist with the KPA100 amp. The amp
uses the space occupied by the optional battery pack and ATU. Installing the
ATU/Battery cover with those accessories makes for a nice, one box, QRP
portable rig. It's not a huge issue to swap top covers, changing the K2/100
into a K2/10 or back again. 

Of course you don't need a heavy power supply for just 10 watts (the rated
maximum output from the K2). The difference between 10 watts and 100 watts
will be 10 dB (between 1 and 2 S-units at the receiving end). I've never
found that to be a problem, but then I'm a QRP guy, Hi! 

(Note that while some get more than 10 watts from their K2, it is NOT
recommended operating voice mode (SSB) at higher power levels to avoid
excessive distortion.)

The ATU is similar to the other Elecraft ATU's - a high-efficiency L-network
with series inductance and shunt capacitance at either the input or load
end. One caveat is that the miniature T1 ATU has somewhat restricted
matching range on 160 and 80 meters owing to the limited space inside for
the inductors required. 

73, Ron AC7AC



-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of KM6JMR
Sent: Tuesday, September 26, 2017 3:27 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K2 20 watt internal tuner

I have purchased a K2/100 and was wondering if the 20 watt internal tuner
cover is more or less better for field work or field day.



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