PD120 SSTV Test Recording to Use in Preparation for Upcoming ISS SSTV Events

In preparation for upcoming ISS SSTV events you can use this recording
to make sure your SSTV app/software can properly decode SSTV
transmission like the ones the ISS will be sending, which use the
PD120 mode. It's available on YouTube, SoundCloud and as an mp3
download via Dropbox:




For more information on upcoming ISS SSTV events see this webpage:


KG4AKV – Tue, 2015 – 12 – 22 09:09

Re: PD120 SSTV Test Recording

Hi John,

Many thanks to you for the PD120 SSTV Test upload. Just to add for Windows/MMSTV users who are not sure on the setup and unable to get the speaker sound back into the mic.!!

From Windows right click “Speakers” icon from bottom right of taskbar.
Click on the "Recording devices" tab.
Right click on one of the listed items and then clicked "Show Disabled Devices".
Select "Stereo Mix" right click "Enable".
At this stage keep the Sound window open for adjustment.

Under “RX Mode” right click on any of the modes and select one to “PD120” and leave it in “Auto” position.
From the dropdown menu choose “Options” then “Setup MMSSTV”
Select “Misc” then “Sound Card In” then choose “Stereo Mix”
From the Sound window right click “Stereo Mix” then choose “Properties”
Select “Levels” and adjust the level to show MMSSTV vertical green bar between 1/2 to 3/4 max mark (this might need further adjustment during live ISS RX).

Don’t forget to disable the “Stereo Mix” after making all adjustments.

73 David G7HCE

Submitted by G7HCE on Tue, 2015-12-22 11:45.

Can't Find "Stereo Mix"

Hi: Thanks for the guide to setting up the MMSTV program in Windows 10...I have two questions, if you don't mind! First, I cannot find "Stereo Mix" on any of my audio drop down listings...How do I get it to show up? Second, I am using the "Audio Cable" driver as both input and output, but this then disables my computer speakers and I cannot hear anything...Any way around this? I really appreciate your assistance (and patience) as I attempt to get ready for the ISS SSTV passes later this week!

Steve KA1OWC

Submitted by LTCSZ on Sun, 2017-07-16 11:26.

Re: Can't Find "Stereo Mix"

I have Stereo Mix on both my older desktop and newer i7 laptop running windows 10 but it's not supported on all PC's.
Here's a short video on how it works for me on the laptop. https://www.youtube.com/watch?v=DWi8lmbs7Kg

Contact John Brier (Space Comms) https://twitter.com/johnbrier about using VB-Audio Virtual Cable and VB-CABLE Driver.

If you have downloaded ISS-SSTV before with either MMSSTV/RX-SSTV in PD180 mode then it should work fine for faster PD120. If possible try using a recorder inline to record the SSTV transmission in case you mess up to play back afterwards.

Submitted by G7HCE on Sun, 2017-07-16 15:01.

PD120 SSTV audio file for TH-D74

I have converted Space_Comms_PD120_SSTV_Test_Recording audio file to make it compatible to copy into Kenwood TH-D74 recording playlist which will allow to play the file and output via the 2.5 external speaker port into pc microphone input for MMSSTV/RX-SSTV to check audio levels should you want.
Set TH-D74 Menu 980 USB Function to Mass Storage. Connect USB lead to pc and put the audio file into folder TH-D74>REC


Submitted by G7HCE on Tue, 2017-07-18 13:17.

Your welcome David, and

Your welcome David, and thanks for those instructions.

Some computers, mine included, won't let you do that. In that case, use VB-Cable:


Submitted by KG4AKV on Tue, 2015-12-22 18:00.


Update 2017-07-21:

Crew schedule now indicates activity SSTV will conclude at 18:00 UT on Monday, July 24.

73 de IW2BSF

Submitted by IW2BSF on Fri, 2017-07-21 15:35.

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