[Elecraft] Fwd: Band decoding with TXBPF's

[James C. Hall, MD]

Sent from my iPad

Begin forwarded message:

> From: "James C. Hall, MD" <heartdoc at nwtcc.com>
> Date: May 19, 2013, 11:20:00 PM CDT
> To: "Elecraft_K3 at yahoogroups.com" <Elecraft_K3 at yahoogroups.com>
> Subject: Band decoding with TXBPF's
> 
> Hello:
> 
> For Field Day I'm planning on using the AUX I/O band data pins to feed the built-in band decoder of the TXBPF's I built a couple years ago. I won't be using the output of this decoder for antenna switching - just band following with the BPF's. I'll be utilizing an older Microkeyer for digital operations and this uses the AUX I/O for FSK and PTT. 
> 
> Looking back in the archives, I presume I will need a DB15 Y-cable which I see Elecraft sells and I presume ABCD on the TXBPF 5-pin DIN is the same as 0123 on the AUX I/O DB-15. I just need to make up this interface cable.
> 
> One other thing - my K3 is serial number 616, so I have the KIO3 board without the pull up resistors. This is more specific to the TXBPF, but does this unit need those resistors; that is, do I need the upgraded KIO3 board ?
> 
> 73, Jamie
> WB4YDL
> 
> Sent from my iPad