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Categories | QRP Accessories | Rework Eliminator™ K2 Internal Mic Adaptor Help

Show all reviews of the Rework Eliminator™ K2 Internal Mic Adaptor

You can write your own review of the Rework Eliminator™ K2 Internal Mic Adaptor.

W3DVX  Rating: 5/5 Sep 9, 2007 10:30  Send this review to a friend!
IMA is useful product for the Elecraft K2  Time owned: 0 to 3 months
If you have an Elecraft K2, and several microphones, then this Internal Mic Adaptor (IMA) is for you. Even if you don't have any mic at the moment, the IMA will give you flexibility to choose something later.

The problem with the K2 is that you need to take out the control board and remove the front-panel assembly each time you change mics. Then you set jumpers and solder in the proper bias resistor if required. When I build a K2, I normally set it up with the Elecraft default: jumpers straight across and a 5.6K resistor. Other configurations I connect using wire-wrap from pin-to-pin as needed ... and perhaps change the resistor. Changing mics is not something you would want to do frequently, if at all.

The better way is this IMA ... it's installed once (easily), and when you want to use a different mic, all you do is take off the left-side cover to reach the IMA jumpers. The jumpers configure both the mic pin-outs and the bias resistor.

The two IMAs that I built so far took less than half an hour each to put together. A very small soldering iron and very thin solder is required, especially for the surface-mount socket that fits over the Elecraft jumper block. The product quality is excellent.

It works as advertised, at least on the two mics that I normally use here: the Elecraft MH2 and the Icom HM-36. I can now change mics in minutes without the hassle. Having a handy printout of the on-line user guide helps when selecting the proper jumper settings.

If there's a downside to the IMA, I should probably mention that those jumpers aren't very big, and you want to avoid dropping one on the floor! The extended end of each jumper can be grasped most easily with small needle-nose pliers for changing the settings.

As a builder of many Elecrafts, I can easily recommend this product to my clients. It's worth the twenty-something dollars for the flexibility. Visit the IMA website and take a closer look ... it might be just the product you need for your K2. 
Product is in production.
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