[Elecraft] K3 option questions

Fri Aug 27 18:44:13 EDT 2010

Note responses:

1.  The TXCO-3 is not necessary.  The basic TXCO is quite stable enough.

2.  You will probably do fine with the 2.7 filter, but may have
complications matching filters if you decide in the future to get the
second Rx for diversity receive.  

3.  For other filters, you could get by in casual use with just the 2.7
or 2.8.  Filter narrowing can happen with roofing filters or with DSP.
The narrow roofing filters do a better job of filtering out noisy
neighbors than DSP filtering.  IF you are just casual and don't care
about digging out a weak station in a crowded band, then you can save
some money.  That being said, having one or two of the narrow filters
gives you the opportunity to test out this rig's true capability.  That
is worth the price of admission.

4.  The KUSB is just an adapter cable.  They are sold everywhere and you
do not have to buy one from Elecraft.

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Linda and Bob
Sent: Friday, August 27, 2010 3:07 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 option questions

I am ordering my K3 sometime next week. I want to make certain that I
order the suitable options when placing my order. The K3 will be factory
assembled. I am not a contester. I enjoy RAG CHEWING on SSB and CW. I do
not currently do any digital modes; not active on HF FM; do not normally
listen to SWL; do not intend to work AM on the HF bands.

Currently own an ICOM IC-7800 and IC-756PROII. No need for a second RX
in the K3 with optional filters for it. The IC-7800 already has this
feature; the IC-756PROII has dual watch. I use two THP amps, HL-1.5KFX,
one for each ICOM. I may switch one amp out to use with the K3. I can
get the THP amp adapter cable from DX Engineering for $35. I also use a
Palstar AT-AUTO ant. tuner with the IC-7800.

(1) Do I need to order the TCXO-3? Is it necessary for greater
stability?

(2) Should I order the 2.8 8-pole SSB filter option instead of the
standard 2.7 5-pole in the first RX? Will I notice much of a difference?

I plan to order the KAT-3F, a 400 Hz CW filter KFL3A-400; KXV3A,
K3/100-F, KFL-3A-1.8K SSB filter (8-pole); KUSB adapter; I may order
KFL3A-2.8K 8-pole filter if recommended (order at the $109.95 swap out
price when placing my order). I don't believe that there are any other
filters that would help me operate based on my criteria above. Maybe the
250 Hz for CW, but with the great K3 PBT and high/lows cuts, it may only
be another expense not needed.

Since most new computers seem to have more USB ports than RS-232 ports,
the USB adapter may be useful. Does Elecraft actually switch out the
RS-232 jack for the USB or do they just send you an adapter cable?

Any help, comments and suggestions would be most appreciated. The
Elecraft Reflector seems to be a wealth of knowledge for the new or old
Elecraft owner. Thanks to everyone who answered my previous post about
the Heil HC-6 Pro Elite headset and the Yamaha CM-500 headset.

Bob Wilderman, K3SRO
dlrwild1 at comcast.net
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