New ISS Repeater Input frequency

Floyd Bixler

It's been reported over the last several days and I saw this just now myself, that the ISS repeater output is now at 145.500.  At 145.800 the offset of -600 was no problem here in Germany.  However, at 145.50 and a -600 offset (can anyone confirm this?) the input is in a range that's supposed to be reserved for digital modes.

I've seen nothing official about a change and was wondering if anyone in the group has any more info.


Clint Bradford

Scott K4KDR reports successful contacts on 437.050 67.0 UPlink, 145.500 DOWNlink.

Clint Bradford

ARISS-Russia delegate Sergey Samburov RV3DR and Frank Bauer KA3HDO report:

ARISS-Russia, in collaboration with the Southwest State University in Kursk, Russia, are developing a series of educational CubeSat satellites called Tanusha. Two Tanusha CubeSats were developed by students at Southwest State University and were hand-deployed by cosmonauts during an August 2017 extravehicular activity. These two CubeSats are performing cluster flight experiments through communications links. A second set of CubeSats, Tanusha 3 & 4 were launched earlier this year and are currently on-board ISS. Tanusha 3 & 4 are planned to be hand deployed by Cosmonauts in August.  They will perform even more comprehensive cluster flight objectives than Tanusha 1 & 2.


On June 20, Tanusha 3 will be connected to one of the ARISS Service Module antennas and will transmit from 0730-1200 UTC on 437.05 MHz.  These FM transmissions will include greetings from students in several languages, including Russian, English, Spanish and Chinese.  On June 21, Tanusha 4 will be connected to one of the ARISS Service Module antennas and will transmit from 0730-1200 UTC on the same frequency:  437.05 MHz.  The ARISS-Russia team plan to also retransmit these signals on the standard ARISS 2-meter downlink, 145.80 MHz using the JVC Kenwood D700 radio that is still on-board ISS.  All are invited to listen to the CubeSats from ISS on 437.05 and/or 145.80 MHz.


The next SSTV image downlinks are planned for June 29-July 1.  These images will commemorate the various satellites that the ARISS team has developed and hand-deployed from the ISS.  These will include the first satellite deployment from ISS:  SuitSat-1/Radioskaf-1 which was deployed in February 2006.  More details on this will be forthcoming as the date draws near.


Floyd Bixler

Good to know, tks  Clint.


That frequency  of 437.050 is well in the recommended satellite frequencies for Germany.  Although 437.00 is suggested for DATV, but I don’t expect any real issue here.


Already have it plugged in for download to my VX-8R.  My VX-7 memory list is being rebuilt from scratch.  Never really liked what I had programmed in so decided to start back from scratch.





Sent from Mail for Windows 10


Clint Bradford

ARISS does not want us using that pair for FM voice repeating. It was 
a problem with the Russians' test of the Tanusha birds that went, well,