Kategorier
Amateur Radio

AX.25 APRS with UISS and IC-705

This is a very fast guide to set up the IC-705 with UISS for sending AX.25 packets and APRS.

  1. Download and install UISS. During installation, install the Soundmodem software TNC.
  2. Download the file ptt-dll.zip from Soundmodem webpage. Unzip and copy the files to your UISS folder.
  3. Download the CAT dll file v 1.21 that includes IC-705 setting and replace CAT.DLL from the file above.
  4. Set the radio to FM-D (Data) and select the frq for APRS (in Sweden 144.800 MHz).
  5. Start UISS
  6. Setup UISS with your callsign and your location:

  7. In Soundmodem, set the Sound Card device to your IC-705 USB audio card.

  8. In Soundmodem, set the PTT Port to CAT and radio IC-705. The COM-port should be the one that IC-705 uses for CI-V.

  9. Now you should be able to see traffic

  10. Now send your first APRS Position. Use digipeater if you like.
    The IC-705 now sends your APRS location.

  11. If everything is OK you should be seen on aprs.fi
Kategorier
Amateur Radio

Rot2Prog powered with Dell 19.5V adapter

Important update!
When using automatic control from PC then both the elevation and azimut is controlled (moved) at the same time. It seems that the Dell power adapter can not handle the current amp spike and turns off (overload protection I guess).

I have now return to using my 13.5 volt power supply.

I have been powering my Rot2Prog rotor controller for my RAS rotor with 13.5 volt. This means that the rotor turns slow. My 13.5 volt power supply also has a very high idle consumption of 10 watts.

I changed the power supply to a standard Dell power adapter – LA130PM121 19.5V 6.7A PA-1131-28D1 130W. It can be found very cheap. I just cut off the power plug and connected the wires from the Dell adapter to the Rot2Prog controller wires.

Now the turning goes MUCH faster! The Dell adapter also has a very low idle consumption – under 0.5 watt. So it can be connected all the time. What I can see there is no interference from the adapter on VHF and UHF.

I highly recommend using the Rot2Prog controller with an old computer adapter. Below is a short video of how fast it is turning.

Kategorier
Amateur Radio

IC-705 operation and satellite memories

Please see the following posts at AMSAT-SM about IC-705 satellit operation and memory files/settings:

Kategorier
Amateur Radio

IC-705 Mic 3V or 8V?

In IC-705 it is possible to set the MIC output voltage to 8V instead of default 3V. I have done some tests and I do not hear any difference with the standard microphone HM-243. What do you think?

FM 3V

FM 8V

USB 3V

USB 8V

Kategorier
Amateur Radio

JS8CALL

Tested new mode today, JS8CALL, and got first QSO with SM4INV:

Read more and download at http://js8call.com/

Kategorier
Amateur Radio

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.

The memories for FM transponders are used like this:

  • Channels named with satellite name, for exemple ”PO-101”, are used in split mode. This channel can be used when using the IC-705 for portable operation or without an extra receiver .
  • 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.

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.

IC-705_SatFrqMemGroup.csv (Downloaded from AMSAT-SM website)

Kategorier
Amateur Radio

First satellite QSO since 1993

Today, 2020-11-11, I made my first satellite QSO since 1993 (when Oscar-13 was alive). My two QSOs was via PO-101, IC-705, 10 watts output to 13 el X-Yagi.