Download Documentation

The Rework Eliminators™ Companion Guides have detailed rework-free assem­bly instruc­tions for building a K2 that’s “Option Ready”* for upgrad­ing with any of Elecraft’s optional inter­nal expan­sion mod­ules (options).  These guides are only avail­a­ble as down­­oad­able Portable Document Format (PDF) files.

There are now two versions of the Companion Guide:

• Companion Guide II (4 MB PDF) – for use with the latest (2007) rev. G Elecraft® K2 manual.
• Companion Guide (3.5 MB PDF) – for use with the previous (2004) rev. F Elecraft® K2 manual.

* As described in our Companion Guides and also in a note on the Frequently Asked Questions page, an “Option Ready” K2 is one into which any optional modules can be installed without requiring extensive dis­as­sem­bly of the enclo­sure, and without requiring any addi­tional sol­der­ing on the K2’s three main circuit boards.  However, following the installation of some modules you still must:

• Re-adjust the 80/160 meter bandpass filter (K160RX).
• Tweak crystal filter and BFO settings (KSB2).
• Check the VCO range on 60 meters, and if necessary realign the VCO (K60XV).

Also, some options will first require the installation of additional connectors on the rear I/O panel (K60XV and K160RX), or the installation of a hex standoff on the Control board (KAF2 and KDSP2).

Rework Eliminator™ K2 Internal Mic Adaptor (IMA) documentation includes …

• User’s Guide – SEP ’08 (1.2 MB PDF) – introduction, configuration, circuit description, and schematic diagram.
• Assembly and Installation Instructions – A full-color printed copy is included with the IMA kit.  It is printed half-size (2-up) and double-sided, then folded to make a small four page booklet.  It is also avail­able for down­load in two dif­fer­ent page sequences.  The version you should down­load depends upon whe­ther you wish to view the file on your com­pu­ter screen (1,2,3,4), or print it to make a small four page booklet (4,1,2,3):
  • Online Screen View Version – FEB ’08 (500 kB PDF) – page sequence = 1,2,3,4.
  • 2-Up Booklet Print Version – FEB ’08 (500 kB PDF) – page sequence = 4,1,2,3.

Our website barely existed when the User’s Guide was first published in the summer of 2005.  However, now a lot of the mate­rial in that orig­i­nal guide is bet­ter addressed elsewhere on our site.  Both ver­sions of the guide have our color-coded un-module diagram along their cen­ter­fold. 

• User’s Guide – SEP ’08 (775 kB PDF) – very latest softcopy only version.
• User’s Guide – SEP ’05 (865 kB PDF) – original deluxe printed version (OUT OF PRINT).

The Quick Start Instruction Sheet (QSIS) is actually four pages from the original User’s Guide.  A full-color printed copy is included with both of our option bypass headers products (kit and bare PCB).  It is printed half-size (2-up) and double-sided, then folded to make a small four page booklet.  The QSIS is available for down­load in either of two dif­fer­ent page sequences, depend­ing upon whe­ther it will be viewed on a com­pu­ter screen (1,2,3,4), or printed to make a small four page booklet (4,1,2,3):

• Online Screen View Version – 28 SEP ’06 (1.4 MB PDF) – page sequence = 1,2,3,4.
• 2-Up Booklet Print Version – 28 SEP ’06 (1.4 MB PDF) – page sequence = 4,1,2,3.

Rev. G Datasheet – 6 AUG ’06 (2.4 MB PDF) – for those of you who may be curious, this datasheet has lots of technical details about the PCB, including all design dimensions and manufacturing tolerances.  A pair of high-res photo-realistic renderings are fea­tured on the cover.