K3 Accessories

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Availability of the following items are currently listed as available in Mid December:

  • KFL3B-FM (FM Bandwidth Filter) 12/15
  • KRX3 (2nd Receiver Option) 12/15
  • KDVR3 (Digital Voice Recorder Option) 12/15

For digital modes, happily the TCXO is already in stock.

  • KTCXO3-1 High Stability Reference Oscillator In Stock


K3 Microphones

Lyle Johnson kk7p at wavecable.com 

 I assume the microphone connector can be configured to suit different 
 microphones, just like the K2...

The K3 has fixed wiring rather than a jumper block. It matches the wiring of the MH2, Elecraft's electrically and aesthetically compatible microphone.

The pinout of the K3 microphone is consistent with the K2 if the jumpers in the K2 are in a row. It is generally consistent with many Kenwood microphones.

A detailed drawing of the K3 mic connector and its pinout are in the FAQ locate the _Interfacing_ heading near the top of the page and click on _Mic Diagram (front)_ for details.

BACKGROUND

When the K2 was introduced 8 years ago, Elecraft did not offer a microphone. The radio's early adopters were primarily CW operators, most of whom seem to own a variety of designer paddles, but don't like to admit owning microphones -- having only one is deemed sufficient, and that one might have an uncertain pedigree :-)

Making the K2 microphone-agnostic was an appropriate design choice, and for a radio that must be hand-built as a kit, it is a reasonable thing to allow the builder to configure.

Unfortunately, if the K2 and its mic get separated, you can never really be sure if you should connect a microphone configured to be compatible with wiring for Icom, Yaesu, Kenwood or some other wiring scheme. My K2 is wired differently than the K2's of some of my friends, so they can't use my mic on their radios, nor can I use their mics on my K2.

With the MH2, Elecraft has an electrically and aesthetically compatible product offering. Jumper configuration seems less compelling than it did. If you have both a K2 and a K3, the K2 is easily wired to match the K3!

73,

Lyle KK7P


D104

In a recent message, Don Rasmussen <wb8yqj@...> wrote ... >Has anyone connected a preamplified D104 to either the >front or rear panel? Are there any added parts >required?

I have been using the D-104 (with base pre-amp) on my K3 for several weeks with some success. However, there is an issue of which Eric is aware.... Transients produced when the mic switch is pressed cause a delay in the build-up of the audio. A workaround is to increase compression. With compression set at zero there is a problem, otherwise it can take several seconds for the audio to build up. The first few words of an over can thus be missed.

There isn't a problem with the K2; the D-104 works fine.

73 -- David G4DMP Leeds, England, UK

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