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Categories | QRP Accessories | Rework Eliminator(TM) K2 Option Bypass Headers Help

Show all reviews of the Rework Eliminator(TM) K2 Option Bypass Headers

You can write your own review of the Rework Eliminator(TM) K2 Option Bypass Headers.

NI0C  Rating: 5/5 Dec 23, 2006 18:49  Send this review to a friend!
Put away those desoldering tools  Time owned: 0 to 3 months
One of the appeals of the Elecraft K2 radio is the ability to customize it with options such as: the SSB module, 100 watt amplifier, analog and digital audio filters, noise blanker, modules for 60m and 160m, computer I/O interface, etc.
Thus you can buy and build the radio with the features you want, and change it later. The Rework Eliminators make addition and removal of the various K2 options as seamless and painless as possible.

I completed K2 s/n 5853 only a couple of weeks ago. Mine is the QRP version, with the optional battery, 160m, DSP audio filter, and noise blanker. The Rework Eliminators helped me to integrate my chosen options with a minimum of hassle.

Using the rework eliminators, the disassembly and desoldering required to add K2 options is minimized. I do not relish disassembly work or desoldering components from plated-through holes on an expensive PCB. The following are some concrete examples of work saved:

Example 1: Installing the KNB2 noise blanker option in the completed K2 requires removing three resistors and one jumper from the RF board. By using the Rework Eliminators, this desoldering work can be avoided entirely, and you gain the ability to remove the noise blanker at any time for troubleshooting by simply
unplugging it from the K2 RF board, replacing it with the KNB2 "un-module."

Example 2: Installing the 160m module in the completed K2 involves removing a jumper on the RF board and removing the heat sink to install the standoff and pc connector for the module. Why mess with those shoulder washers and thermal
pads on the PA transistors that you've so carefully installed ? By following the instructions with the Rework Eliminators, the connector and standoff would already be in place, holding the 160m "un-module" that you so cleverly installed during the initial build of the K2. There is no jumper to remove because its
function is provided by the un-module which you simply unplug when it is time to install the 160m module. The heat sink stays intact!

Example 3: Installing the KDSP2 involves pulling the Control Board (with the Allen wrench provided by Elecraft) and desoldering two resistors or jumpers. If you had incorporated the Rework Eliminators when you assembled the Control Board, you could install the completed KDSP2 module by simply replacing the un-module with the DSP module. No need for desoldering components or even removing the Control Board!

In my view, the rework eliminators provide advantages for all K2 owners and builders:

1.) If you are building a new K2, the rework eliminators will help you to test your basic K2 before you install options, then allow you to just plug in your selected options.

2.) If you have an existing K2 and want to add options, the unmodules will allow you to remove the options for troubleshooting and maintenance.

3.) If you are thinking of re-selling your K2 at sometime in the future (I am not!) incorporating the unmodules for the options you don't have may make your rig more desirable to a buyer who wishes to add those options.

I think the advantages are particularly weighty for new builders like myself who purchased a number of options with the new K2 kit.

In summary, the Rework Eliminators helped me get my new K2 and options on the air within a span of less than three weeks.

Product is in production.
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