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Transceivers for Amateur Radio Satellites


This is a list of VHF/UHF transceivers that can be used for Amateur Radio Satellites. At the moment I choose only to list:

  • Rigs that have both VHF and UHF (HF as bonus) and all mode
  • Full Duplex Base Station rigs
  • Non Full Duplex smaller rigs that can be used mobile or as portable

Many of the rigs are discontinued. FM only mobile rigs and handheld can be added later to this list but can be found on this page from 2017. In the table below the weight is listed, because that was data I was interested in when I did the summary. For all other data – please follow the link to RigPix. As you see Icom, Kenwood and Yaesu are the main brands.

This list will never be complete in any way but maybe can help if you looking for old used rigs. All info is from the excellent RigPix Database.

Full Duplex All Mode Base Station VHF/UHF transceivers

NameWeight (kg)Note
IC-97004.7D-Star, SDR

Mobile or Portable All Mode VHF/UHF transceivers
(not full duplex, all has HF)

NameWeight (kg)Note
IC-71002.7 (with front panel)
IC-7051.1D-Star, SDR, Battery
See our posts about IC-705
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Working satellites with IC-705 PstRotator SDR-Console

This is a guide how to working satellites with the IC-705 or similar rig. When trying to understand the IC-705 I needed to write down how to use it – so this is how this post was born. I will try to explain 3 different user scenarios, each have a case for FM- and linear satellites :

  • Working stand alone (portable) without computer control
  • Working with SDR-Console for doppler adjust and a SDR as receiver
  • Working with PstRotator for doppler adjust

The IC-705 satellite memory examples and file can be found here.
Please contact me if you see anything that will not work in the following user cases – I have limited knowledge.

Setting up PstRotator

I will not explain how to use and set up PstRotator – the PstRotator manual is very good. The settings for Omnirig is like this:

And a typical layout for PstRotator Satellites Tracking is like this (and for reference image for the text below):

Case 1: Using IC-705 stand alone without computer control

FM satellites

  • Select split memory for the satellite in IC-705.
  • If needed adjust the RX frequency with the VFO knob (look at the waterfall).
  • Adjust the TX frequency for doppler when transmitting with VFO knob. Use a printed frequency chart for help.

Linear satellites with SSB transponder
(I have never tried semi-duplex on linear satellites before so not sure if this works)

  • Select split memory for the satellite in IC-705.
  • Adjust the RX frequency with the VFO knob to find a free space on the transponder (look at the waterfall).
  • Adjust the TX frequency (press PTT and use the VFO knob) to the correct frequency on the uplink. Use a printed frequency chart for help.
Case 2: Using IC-705 with SDR-Console v3

In this case the IC-705 is working as the transmitter with full doppler control and a SDR as receiver, aslo with doppler control.

FM satellites

  • Select the uplink memory for the satellite in IC-705.
  • Start External Radio in SDR Console for doppler control – no need to do anything on the IC-705 – just transmit.

Linear satellites with SSB transponder

  • Select the uplink memory for the satellite in IC-705.
  • Adjust the RX frequency at SDR Console to find a free space on the transponder (look at the waterfall).
  • As SDR Console does not link up/downlink VFOs – adjust the TX frequency on the IC-705 with the VFO knob to the correct frequency on the uplink. Doppler is corrected also during TX. Use a printed frequency chart for help.
  • During changing frequency with the VFO knob, turn off the ”Doppler” adjustment in SDR-Console external radio, then turn it on again.
Case 3: Using IC-705 stand-alone with PstRotator

In this case PstRotator sets the correct frequency and mode on the IC-705 and has doppler control for both RX and TX. You are working IC-705 stand-alone as semi-duplex.

FM satellites

  • Select the satellite from PstRotator Favorites. Correct frequency, mode and subtone are now set in IC-705 VFOs.
  • Press the ”UP+DN” on PstRotator. Doppler is now adjusted on both RX and TX.
  • No need to do anything on the IC-705 – just transmit and listen.

Linear satellites with SSB transponder

  • Select the satellite from PstRotator Favorites. Correct frequency and mode are now set in IC-705 VFOs.
  • Press the ”UP+DN” on PstRotator and check that VFO linking are set to ”Reverse”. Doppler is now adjusted on both RX and TX and the VFOs are linked.
  • Adjust the RX frequency with the VFO knob to find a free space on the transponder (look at the waterfall). The TX is linked and will have correct frequency.
  • Change the VFO linking to ”Not linked” on PstRotator. This means that both TX and RX are still doppler adjusted but the TX frequency is locked (fixed). If needed you can adjust the RX frequency with the VFO knob on the IC-705.

Finally this is a short video when using the tiny GPD MicroPC with PstRotator and IC-705 as a portable computer controlled doppler adjustment.

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VHF Handboken är uppdaterad

I November 2020 gavs det ut en ny version av VHF Managers Handbook på IARU Region 1:s hemsida, V9.0. där man hittar ändringar runt bandplan och satellitallokering på 436.000 MHz – 438.000MHz gällande samexisterande digitala trafiksätt

Handboken har uppdaterats hur simplex DATV trafik och experimentell dataöverföring används på 70cm i samma bandplan där satellitfrekvenserna finns.

Handboken har uppdaterats för användningen av enbart simplex DATV/experimentell dataöverföring samt förhållandet och prioritet till satellittrafik i samma bandplan.

I handboken har man nu även beslutat att på 70cm inte längre tillåta äldre ATV och andra ”digitala” trafiksätt kräver mycket bandbredd.

Nyare digitala trafiksätt möjliggör att man kan använda UHF/VHF banden eftersom den bandbredd som krävs är betydligt smalare, dvs. man är inte enbart hänvisad till att använda mikrovågsbanden eftersom bandbredden som krävs ryms nånstans inom bandplanen för respektive VHF UHF band. Dvs. samexisterande trafik förväntas behöva plats på t.ex 436-438MHz.

Exempel på icke-satellit simplex digital trafik som kan dyka upp på 436-438MHz och samexistera på 70cm är enligt standarder DATV DVB-S, RB-ATV.
DATV DVB-S används med en symbolhastighet på 2 M S/sec och bandbredden blir 2MHz.
RB-ATV kan användas med en symbolhastighet på 333 K S/s och bandbredden blir 450kHz.

Det finns andra digitala trafiksätt som t.ex New Packet Radio (NPR) med varierande bandbredd 100kHz till 500kHz och som troligen passar in som experimentell dataöverföring men det finns redan en 200kHz bred allokering för datatrafik på 433.600-434.000MHz så NPR trafik bör återfinnas där.

Här är några klipp ur VHF handboken där ändringarna på 70cm syns.


1.5.1 Footnote (c ) to:
As of 1-Jan-2021 Analogue ATV and SATV is no longer permitted in the 430-440 MHz band.

ATV operators are encouraged to use the microwave allocations where available, but may use narrower bandwidth DATV modes in the 436-438 MHz band.
See 1.5.4 for further guidance for DATV and experimental Data usage.
In case of interference between DATV/Data and the Amateur Satellite Service, the Satellite Service shall have priority.

1.5.4 DATV and Experimental Data usage in the 436-438 MHz Band (VGC 2020)
If the 436-438MHz amateur satellite section is used for DATV or other experimental Data developments, it
shall be on the following basis:
• DATV (like Voice) Repeater outputs are not permitted
• DATV Internet gateways are not permitted
• DATV Repeater inputs are permitted (eg for cross band usage)
• DATV Simplex usage is permitted
• Transmission times by DATV/Data users should be as short as possible
Any DATV and adhoc simplex Data usage of similar bandwidths to DATV, should be compliant with the
Region 1 Technical Recommendations for DATV in Section-9.4 and in particular the maximum bandwidth.
No other fixed infrastructure for nodes, gateways, DV hot-spots or repeaters are permitted in 436-438MHz.

Här är några klipp från IARU 2020 konferensen:

Recommendations for Technical Recommendations:
a) Rename Section-9 title to Amateur Television (remove ‘wide band’)
b) Remove Sec 9.1 for AM TV in 435 MHz
c) Remove Sec 9.2 for 435 MHz medium BW ATV
d) Remove 9.4.1 re 435 MHz Fast scan ATV standard
e) Remove 9.4.2 re 435 MHz SATV standard
f) Remove 9.4.3 Fax Standard (also redundant)

70cm bandplanen på SSA.SE med fotnot.

435,000 – 436,000 20 kHz Alla moder Exklusivt satellitsegment (e)
436,000 – 438,000 Alla moder Satellitsegment och DATV/Data(e)
(e) Sändning från DATV repeatrar skall inte förekomma i bandet 436 – 438 MHz.

Några länkar:


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Satellite Memory File for IC-705

This is a memory group file over satellite frequencies for Icom IC-705 and CS-705 software. It is not complete and will be updated. Feel free to use it, change and add, make your own groups etc.

The memories are used like this:

  • Channels named with satellite name, for exemple ”PO-101 Split”, are used in split mode. This channel can be used when using the IC-705 for portable operation or without an extra receiver .
  • The FM-satellites also has five split memories each with AOS-LOS frequencies – for portable operation without computer doppler tuning.
  • Channels named with satellite name and Uplink, for exemple ”PO-101 Uplink”, are used only for uplink (not split). This can be used with software like SDR-Console v3 (external radio) or if you have an extra receiver.
  • Channels named with satellite name and Downlink, for exemple ”RS-44 Downlink”, are used only for downlink (not split).

Import the memory file into CS-705:
Note! Be sure that you not overwrite anything in your IC-705 when cloning. Make a backup of your current settings!

  • Create a new memory group
  • Mark this new group
  • Choose File->Import->Group and choose the .csv file
  • The memories will now be imported to CS-705
  • Clone to your IC-705

As CS-705 seems to handle character set different between regions I have now created two files. If one does not work, try the other one. Comma separated is working for North America.

IC-705_SatFrqMemGroup.csv (Updated 2021-02-05)
IC-705_SatFrqMemGroup_commasepareated.csv (Updated 2021-02-05)

RT Systems Memories example

The following explanation is from Jack Spitznagel – KD4IZ, for the RT Systems software.This brief explanation assumes that the RT Systems IC-705 Programmer user knows how to import memories into the software:

  1. Before you merge these into an existing RT Systems memory set, it is first necessary to open the .CSV file in a spreadsheet (Excel or Libre Office) and edit the Channel Number and Bank names. Save the edited file as a .CSV file.
  2. Channel numbers should be set to start numbering at the first open memory row (this example: if row 77 is your first open memory row, start numbering at 77, go up to 99).
  3. Bank numbers should be changed to the first open memory Bank # in the form “##:Bank Name”. In the example, “04:Satellite” was used because Bank 0, 1, 2, and 3 already have assigned names in the memopry file that was used. Interestingly, the “Satellite” Bank Name was not recorded which requires some easy editing of the new file.
  4. Save your RT Systems memory file to a NEW FILENAME so you don’t lose your settings. Users may want to edit the arrangement once the data is imported into the RT Systems IC-705 Programmer.

Users may want to edit the arrangement once the data is imported into the RT Systems IC-705 Programmer.

IC-705_SatFrqMemGroup_RTSystemsFormat.csv (Updated 2021-02-07)

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IC-705 doppler correction with SDR-Console

Here a short video of IC-705 Frequency and Doppler control from SDR-Console.
The first part is frequency control with VFO following the radio.
The second part is doppler control from the Satellite External Radio control.

Download the OmniRig config file from: https://sm7iun.se/station/ic705/
Be sure to use the correct CI-V hex code in the seetings for IC-705.

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IC-705 doppler correction with PSTRotator

To setup the new IC-705 for doppler control with PstRotator software you just have to follow these steps:

  • Download the OmniRig file for IC-705 from here https://sm7iun.se/station/ic705/
  • Be sure to set up the IC-705 for USB control according to the manual from Icom
  • Follow the guidelines in PstRotator documents for satellite and rig control, choosing IC-705 from OmniRig setup

Here a short video after the setup: