Elecraft K60XV Manual - Manual (Page 2)

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Your K2 and some of its options will not function correctly with the K60XV
unless they meet the requirements listed here. Please read all items carefully.
Firmware Requirements

K2: Revision 2.04P or later main microcontroller firmware is required (U6, Control board), and
revision 1.09 or later I/O Controller firmware (U1, RF board). Serial number 4060 and higher K2s already
have these revisions. To check the revision, hold any switch while turning the K2 on. Two numbers will be
displayed: your main microcontroller revision on the left (e.g. 2 . 0 3 D ), and the IOC revision (e.g. 1 . 0 7 ).
If either is not current, you must obtain an update from Elecraft (order #FWK2MCIO). This new
firmware is included free of charge with the purchase of the K60XV kit on request.

KAT2 and KAT100 ATUs: For 60-meter use, the KAT2 requires revision 1.07 or later (order
#FWKAT2). The KAT100 requires revision 1.05 or later (#FWKAT100). To determine your KAT2 or
KAT100 firmware revision, use the K2's A T U menu entry. Note: In the U.S., CW operation is not
allowed on 60 m at present. Technically, this means you can't use an ATU (see page 16).

KSB2 SSB Adapter: Revision 1.07 or later (#FWSSB) is required if you plan to use SSB modes with
low-power transverter I/O. To determine the revision, set the S S B A menu entry to B A L , exit the menu;
the hold
V O X . (Be sure to return S S B A to its original value after checking the firmware revision.)
Hardware Requirements

K2 Rear Panel: Starting with K2 serial number 4088, two holes for phono (RCA) jacks were added to
the K2's lower rear panel/heat sink, near the transverter I/O connector (J13 on the K2 RF board). Jacks of
this type are often used for transverter I.F. connections, and have satisfactory characteristics at 28 MHz.
They provide a more convenient connection point for transverters than the BNC jacks provided in the
original K2 top cover, and can be used even with a KPA100 installed. You can order the new rear panel
(order #E100075SS), or use the top-cover connectors. NOTE: The rear panel is removed during K60XV
installation, so you must obtain the new panel before you start K60XV kit assembly.

KPA100 (K2/100's 100-watt stage): The KPA100 cannot be used on 60 m unless it includes (1) the
circuit updates made recently to improve high-SWR handling; (2) the newer version of the KPA100 shield,
which includes grounding clips. If your KPA100 manual is revision C or later, both sets of changes are
already in place. (Another way to tell if your unit has the circuit changes is to look at toroid L18 on the
KPA100; it was recently replaced by a jumper.) The SWR-related update kit is order #KPA100MODKT.
The shield upgrade is order #KPA100SHLDKT. Once these changes are in place, you can use the KPA100
on 60 meters, and can optionally upgrade to KPA100 firmware revision 1.09. This revision allows up to a
2:1 SWR before reducing power. (Use the K2's P A menu entry to check your present KPA100 revision.)
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CAUTION: Some components in this kit can be damaged by static discharge.
Before handling, put on an anti-static wrist strap or touch a grounded surface.