Kevin,
To preserve your sanity you can measure the frequency response of the radio and see what it is doing to the audio path. Feed the audio into the sound card and run a sound card spectrum analysis program. There are many, such as Sectragram. There are several listed here: http://www.radio.imradioha.org/pc_based_test_gear.htm
To do this just tune to a part of the band with pure noise (which is most of the band). The response you get then just shows what the filter is letting through.
There is an example spectrum in the FoxTelem manual on page 13. This is marginal. Ideally it extends closer to zero Hz. http://amsat.us/FoxTelem/foxtelem_manual.pdf
73 Chris
On Wed, Oct 10, 2018 at 11:42 AM Kevin Zari kk4yel@gmail.com wrote:
Frank, I have read through the manual and it doesn’t appear the IC-910 has a button to long press to put it in digital mode. Also, I learned that the 9600 mode is only a toggle for the TX. On RX, it doesn’t change the signal getting on pin 4 or not. The audio is always on pin 4. -Kevin
The problem with the world is that the intelligent people are full of doubts, while the stupid ones are full of confidence.
On Oct 10, 2018, at 11:06, Frank K6FW1@verizon.net wrote:
I have a IC-9100. In addition to setting the menu item to 9600 baud,
the radio has to be in FM digital. To put the IC-9100 into FM digital the FM mode button is de[pressed until the “D” icon shows on the display. This disables the filtering to allow the DUV audio from the satellite to pass onto the sound card. I don’t have an IC-910 so don’t know if this applies to that radio.
I am using the IC-9100 into a computer sound card and Foxtelem and
decoding the data and uploading to the server.
Frank K6FW
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