The Automatic Band Decoder continuously decodes your transceiver's band changes and
provides a separate output for each of the nine bands of your rig. By connecting an external
antenna switch to the decoder's output, automatic and correct antenna selection is
accomplished.

The Band Decoder is primary designed for Yaesu radios with band output signal BCD coded
at TTL voltage levels.

However, it can be used with any other device that uses the same method of band coding at
TTL voltage levels (for example Microham MK2R or LPT computer port). Then the computer
running software may send the current band information to the computer's LPT port or to an
auxiliary output at Microham MK2R. Many computer logging programs support this feature
now, which can be useful if you have a Kenwood or Icom transceiver. Consult your
transceiver and software manuals on how to interface your radio to the computer and how
to enable the software's antenna control feature.

The Band Decoder provides source driver outputs, which provide a source of 12Vdc for the
“hot” side of external relays (common point for the relays is a ground or minus pole).
All of the antenna switches designed by me are controlled by this way, but you can
control many other products with the same method of switching.

Schematic and manual can be downloaded in one PDF file from  HERE


Shipped with insurance and tracking.

See my other auctions. I always combine the shipping.

Small print:

DO NOT BELIEVE eBay estimated delivery time! eBay does not know about the Czech or worldwide postal system.

The delivery time is sometimes faster than proposed by eBay, but very often is slower, especially for overseas shipping (UK included!!). 

I am trying to do my best, in 90% I am shipping first working day after the purchase, but the final delivery time is out of my control. 

If you are in hurry, ask me in advance and I will send you an offer for EMS shipping.  In case of long delivery time ask me first rather than open a case.

Thank you for the understanding and cooperation.