[K3PZN-List] raspberry pi club

[Kyle Thornton]

That's neat!! I bought a usb sound card and will probably be using fldigi like i did with the EOC and transmit manually through the mike. Once I eventually upgrade radios I will try and do something similar. Do we want to try and meet half hour before the meeting in Monday to do all out pi stuff? 

73 
KC3FMP 

> On Feb 6, 2016, at 10:08 PM, Peter Morton <mortonph at comcast.net> wrote:
> 
> On Friday of the blizzard, I was playing with my Raspberry Pi and connected a Signal Link between it and my FT897.  (I normally use the FT897 as an FM base station on 6, 2 & 440.)  Raspian Jessie recognized the Signal Link USB sound device.  I loaded FLDIGI and it worked on receive quite well.  I set it up for MT63 on 145.410 and left everything on overnight.  Saturday morning I found the EOC MT63 overnight activity in the FLDIGI receive window.
> 
> After snow blowing for three days, I finally got back to the shack to play some more.  I began checking into what it would take to get CAT rig control from FLDIGI running on the Pi.  After investigating the rear connectors on the FT897 and looking for appropriate cables, I found, on eBay and Amazon, interface cables with a self-contained FTDI UART chip with TXD and RXD brought out at TTL levels to a mini-DIN connector that mates with the CAT connector of the FT897. [Search for a Yaesu CT-62 cable on Amazon and look for the USB version (not the RS232 version sold by Yaesu).]  The cable I purchased is made by Valley Enterprises.  FTDI makes the cable with pig-tail leads, without the mini-DIN connector.  See: http://www.ftdichip.com/Products/Cables/USBTTLSerial.htm
> 
> Raspian Jessie recognized the FTDI UART and I now had CAT control of the FT897 while running FLDIGI on the PI.  So, two USB ports on the PI were now being used to interface the FT897 and two for the keyboard and mouse, so I had to disconnect the wi-fi USB dongle and use the wired-lan connector for internet.  I'll look for a USB hub soon.
> 
> I set the transmit audio level for FM by observing a spectrum analyzer and setting the TX audio level for a spectrum width of about 10 KHz.  Anyone have a better method?  I also set the audio level for HF data (SSB) to just tickle the ALC meter while operating at 50% power.  It has taken me a while to digest the FT897 menu system for setting up modes and levels.
> 
> So, I now have the FT897 under control of the Raspberry PI running FLDIGI.  My next step is to try running the FT897 remotely via the PI from another PC on my network using VNC (see https://www.raspberrypi.org/documentation/remote-access/vnc/README.md).
> 
> I'll let you know how it goes.
> 
> All the above can be done with just about any rig with the appropriate interfaces.  It just takes some figuring out.
> 
> -Pete, W3GVX
> 
> 
>> On 2/6/2016 4:31 PM, Steve S wrote:
>> Got FLDigi going on my pi this afternoon, copying psk on 20m. It works surprisingly well. Have not tried to xmit yet. I don't have an isolation xformer thfor mic input. I used a usb sound adapter for audio since I think the pi uses PWM (pulse width modulated) sound output and I would guess this would not sound very good on the air. USB sound adapters are really cheap nowdays, under 10 bux.
>> 
>> Had alot of trouble with Jessie op sys revision. I couldn't get my wireless wifi to work with it. Also ended up corrupting the SD card a couple of times after update/upgrade. Gave up and went back to Wheezy and all good.
>> 
>> 73;
>> Steve
>> NY3A
>> ______________________________________________________________
>> 
>> 73 de K3PZN Westminster, MD
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> 73 de K3PZN Westminster, MD
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