#ic705 — Public Fediverse posts

Who needs a Flex (not that I wouldn’t want one): hunted #cw #POTA from a hotel room in NYC, using SDR-Control on my phone, #44Net Connect, and my #IC705 at home.

Who needs a Flex (not that I wouldn’t want one): hunted #cw #POTA from a hotel room in NYC, using SDR-Control on my phone, #44Net Connect, and my #IC705 at home.

Who needs a Flex (not that I wouldn’t want one): hunted #cw #POTA from a hotel room in NYC, using SDR-Control on my phone, #44Net Connect, and my #IC705 at home.

I've used my #IC705 as my main #hamRadio rig for some five years now. Time for a detailed report of my experiences.

Spoiler: Mostly good, but there are a few things I'm missing: USB-C jack, easy CW side tone audio level adjust, 5 GHz WiFi, USB-access to the SD card, open source firmware.

If the "detailed" of "detailed report" does not scare you (as in: fairly long), be welcome to https://dj3ei.famsik.de/blog/posts/2025/ic-705/ .

I've used my #IC705 as my main #hamRadio rig for some five years now. Time for a detailed report of my experiences.

Spoiler: Mostly good, but there are a few things I'm missing: USB-C jack, easy CW side tone audio level adjust, 5 GHz WiFi, USB-access to the SD card, open source firmware.

If the "detailed" of "detailed report" does not scare you (as in: fairly long), be welcome to https://dj3ei.famsik.de/blog/posts/2025/ic-705/ .

I've used my #IC705 as my main #hamRadio rig for some five years now. Time for a detailed report of my experiences.

Spoiler: Mostly good, but there are a few things I'm missing: USB-C jack, easy CW side tone audio level adjust, 5 GHz WiFi, USB-access to the SD card, open source firmware.

If the "detailed" of "detailed report" does not scare you (as in: fairly long), be welcome to https://dj3ei.famsik.de/blog/posts/2025/ic-705/ .

I've used my #IC705 as my main #hamRadio rig for some five years now. Time for a detailed report of my experiences.

Spoiler: Mostly good, but there are a few things I'm missing: USB-C jack, easy CW side tone audio level adjust, 5 GHz WiFi, USB-access to the SD card, open source firmware.

If the "detailed" of "detailed report" does not scare you (as in: fairly long), be welcome to https://dj3ei.famsik.de/blog/posts/2025/ic-705/ .

My preparations for contact with the International Space Station. Reception is working very well. I can hear Oleg Platonov, a Russian cosmonaut. I still need an antenna for transmitting.

#RS0ISS #ARISS #ISS #ICOM #IC705

My preparations for contact with the International Space Station. Reception is working very well. I can hear Oleg Platonov, a Russian cosmonaut. I still need an antenna for transmitting.

#RS0ISS #ARISS #ISS #ICOM #IC705

My preparations for contact with the International Space Station. Reception is working very well. I can hear Oleg Platonov, a Russian cosmonaut. I still need an antenna for transmitting.

#RS0ISS #ARISS #ISS #ICOM #IC705

My preparations for contact with the International Space Station. Reception is working very well. I can hear Oleg Platonov, a Russian cosmonaut. I still need an antenna for transmitting.

#RS0ISS #ARISS #ISS #ICOM #IC705

My preparations for contact with the International Space Station. Reception is working very well. I can hear Oleg Platonov, a Russian cosmonaut. I still need an antenna for transmitting.

#RS0ISS #ARISS #ISS #ICOM #IC705

Problems using my #IC705 radio together with my computer, the two connected via CAT via USB.

I use the rig's controls to change frequency. Often, frequency sync is lost: Changes of the frequency are apparently no longer communicated to the computer.

I use CAT-controlled Morsecode transmission heavily. That and other commands, including frequency changes from the compuyer, continue to work.

I've seen this problem with different setups, but all using hamlib.

Others seen this also?

#HamRadio

Problems using my #IC705 radio together with my computer, the two connected via CAT via USB.

I use the rig's controls to change frequency. Often, frequency sync is lost: Changes of the frequency are apparently no longer communicated to the computer.

I use CAT-controlled Morsecode transmission heavily. That and other commands, including frequency changes from the compuyer, continue to work.

I've seen this problem with different setups, but all using hamlib.

Others seen this also?

#HamRadio

Problems using my #IC705 radio together with my computer, the two connected via CAT via USB.

I use the rig's controls to change frequency. Often, frequency sync is lost: Changes of the frequency are apparently no longer communicated to the computer.

I use CAT-controlled Morsecode transmission heavily. That and other commands, including frequency changes from the compuyer, continue to work.

I've seen this problem with different setups, but all using hamlib.

Others seen this also?

#HamRadio

Problems using my #IC705 radio together with my computer, the two connected via CAT via USB.

I use the rig's controls to change frequency. Often, frequency sync is lost: Changes of the frequency are apparently no longer communicated to the computer.

I use CAT-controlled Morsecode transmission heavily. That and other commands, including frequency changes from the compuyer, continue to work.

I've seen this problem with different setups, but all using hamlib.

Others seen this also?

#HamRadio

I recently measured #IC705 transmit power 🧵. But I did not dive into output power's dependency on supply voltage. Jürgen DF3PM kindly made me aware of results by George, M1GEO. George found out that (unsurprisingly), output power drops as supply voltage is decreased from 13 V to 12 V or less.

Interestingly and somewhat surprising, output power is stable as supply voltage is increased to 14, 15, or 16 V, though efficiency drops.
https://www.george-smart.co.uk/2024/07/measuring-the-icom-ic-705-rf-power-vs-dc-input-voltage/

Thanks, Jürgen and George!

I recently measured #IC705 transmit power 🧵. But I did not dive into output power's dependency on supply voltage. Jürgen DF3PM kindly made me aware of results by George, M1GEO. George found out that (unsurprisingly), output power drops as supply voltage is decreased from 13 V to 12 V or less.

Interestingly and somewhat surprising, output power is stable as supply voltage is increased to 14, 15, or 16 V, though efficiency drops.
https://www.george-smart.co.uk/2024/07/measuring-the-icom-ic-705-rf-power-vs-dc-input-voltage/

Thanks, Jürgen and George!

I recently measured #IC705 transmit power 🧵. But I did not dive into output power's dependency on supply voltage. Jürgen DF3PM kindly made me aware of results by George, M1GEO. George found out that (unsurprisingly), output power drops as supply voltage is decreased from 13 V to 12 V or less.

Interestingly and somewhat surprising, output power is stable as supply voltage is increased to 14, 15, or 16 V, though efficiency drops.
https://www.george-smart.co.uk/2024/07/measuring-the-icom-ic-705-rf-power-vs-dc-input-voltage/

Thanks, Jürgen and George!

I recently measured #IC705 transmit power 🧵. But I did not dive into output power's dependency on supply voltage. Jürgen DF3PM kindly made me aware of results by George, M1GEO. George found out that (unsurprisingly), output power drops as supply voltage is decreased from 13 V to 12 V or less.

Interestingly and somewhat surprising, output power is stable as supply voltage is increased to 14, 15, or 16 V, though efficiency drops.
https://www.george-smart.co.uk/2024/07/measuring-the-icom-ic-705-rf-power-vs-dc-input-voltage/

Thanks, Jürgen and George!

What is the #IC705's transmit power?

I recently did a bunch of measurements.

Takeaways:

With the power knob at 0%, output can still be as much as 100 mW.

When using the "max power" setting, actual power delivered is always a little lower.

Output power mildly dependent on which band you transmit.

To achieve 5 W output, I'll set "max power" to 10 W and the percentage to 61%.

More details: https://dj3ei.famsik.de/blog/posts/2025/ic-705_pwr/

What is the #IC705's transmit power?

I recently did a bunch of measurements.

Takeaways:

With the power knob at 0%, output can still be as much as 100 mW.

When using the "max power" setting, actual power delivered is always a little lower.

Output power mildly dependent on which band you transmit.

To achieve 5 W output, I'll set "max power" to 10 W and the percentage to 61%.

More details: https://dj3ei.famsik.de/blog/posts/2025/ic-705_pwr/

What is the #IC705's transmit power?

I recently did a bunch of measurements.

Takeaways:

With the power knob at 0%, output can still be as much as 100 mW.

When using the "max power" setting, actual power delivered is always a little lower.

Output power mildly dependent on which band you transmit.

To achieve 5 W output, I'll set "max power" to 10 W and the percentage to 61%.

More details: https://dj3ei.famsik.de/blog/posts/2025/ic-705_pwr/

What is the #IC705's transmit power?

I recently did a bunch of measurements.

Takeaways:

With the power knob at 0%, output can still be as much as 100 mW.

When using the "max power" setting, actual power delivered is always a little lower.

Output power mildly dependent on which band you transmit.

To achieve 5 W output, I'll set "max power" to 10 W and the percentage to 61%.

More details: https://dj3ei.famsik.de/blog/posts/2025/ic-705_pwr/

#Sonate-2 satellite images received on #sstv .
Quite good reception despite only 500mW satellite transmitter.
#rig: #ic705 , 5-el yagi
Tracking and doppler correction with #look4sat.
Transmision schedule: https://www.informatik.uni-wuerzburg.de/raumfahrttechnik/projekte/aktive/sonate-2/information-fuer-funkamateure/
#sat

#Sonate-2 satellite images received on #sstv .
Quite good reception despite only 500mW satellite transmitter.
#rig: #ic705 , 5-el yagi
Tracking and doppler correction with #look4sat.
Transmision schedule: https://www.informatik.uni-wuerzburg.de/raumfahrttechnik/projekte/aktive/sonate-2/information-fuer-funkamateure/
#sat

#Sonate-2 satellite images received on #sstv .
Quite good reception despite only 500mW satellite transmitter.
#rig: #ic705 , 5-el yagi
Tracking and doppler correction with #look4sat.
Transmision schedule: https://www.informatik.uni-wuerzburg.de/raumfahrttechnik/projekte/aktive/sonate-2/information-fuer-funkamateure/
#sat

Successful reception of #sstv from #fram2 mission this morning :-). As requested, I am not showing the received pictures before the #fram2ham contest is over: https://fram2ham.com .
#ic705 #look4sat

Successful reception of #sstv from #fram2 mission this morning :-). As requested, I am not showing the received pictures before the #fram2ham contest is over: https://fram2ham.com .
#ic705 #look4sat

Successful reception of #sstv from #fram2 mission this morning :-). As requested, I am not showing the received pictures before the #fram2ham contest is over: https://fram2ham.com .
#ic705 #look4sat

This print (and build) was something else I designed initially for myself.

I’ve uploaded the case design to printables but it is available as a kit as well as fully assembled (with all components) at https://shop.g7ufo.radio

I use a Lynovation CTR2-MIDI as a #midicontroller for my #flexradio and #ic705 but this does support others. My only gripe was that adding a battery added bulk and cables. This is also compatible with the CTR2-Micro

https://g7ufo.radio/posts/ctr2-midi-battery-addon/

This print (and build) was something else I designed initially for myself.

I’ve uploaded the case design to printables but it is available as a kit as well as fully assembled (with all components) at https://shop.g7ufo.radio

I use a Lynovation CTR2-MIDI as a #midicontroller for my #flexradio and #ic705 but this does support others. My only gripe was that adding a battery added bulk and cables. This is also compatible with the CTR2-Micro

https://g7ufo.radio/posts/ctr2-midi-battery-addon/

Braved the storm this afternoon to do some 24GHz (12.5mm wavelength) #MicrowaveRadio #AmateurRadio.

One contact made with Pete G1DFL over a 24KM path on #SSB and #DStar. 59+20dB both ways.

#Icom #IC705 IF and #Wavelab based transverter & 1.5w PA into a 30cm Andrew dish.

1.5w x 34.4dBi = 4131w ERP!

#uWave #HamRadio #HamR #AmateurFunk #アマチュア無線 #AmachuaMusen

Braved the storm this afternoon to do some 24GHz (12.5mm wavelength) #MicrowaveRadio #AmateurRadio.

One contact made with Pete G1DFL over a 24KM path on #SSB and #DStar. 59+20dB both ways.

#Icom #IC705 IF and #Wavelab based transverter & 1.5w PA into a 30cm Andrew dish.

1.5w x 34.4dBi = 4131w ERP!

#uWave #HamRadio #HamR #AmateurFunk #アマチュア無線 #AmachuaMusen

Braved the storm this afternoon to do some 24GHz (12.5mm wavelength) #MicrowaveRadio #AmateurRadio.

One contact made with Pete G1DFL over a 24KM path on #SSB and #DStar. 59+20dB both ways.

#Icom #IC705 IF and #Wavelab based transverter & 1.5w PA into a 30cm Andrew dish.

1.5w x 34.4dBi = 4131w ERP!

#uWave #HamRadio #HamR #AmateurFunk #アマチュア無線 #AmachuaMusen

Braved the storm this afternoon to do some 24GHz (12.5mm wavelength) #MicrowaveRadio #AmateurRadio.

One contact made with Pete G1DFL over a 24KM path on #SSB and #DStar. 59+20dB both ways.

#Icom #IC705 IF and #Wavelab based transverter & 1.5w PA into a 30cm Andrew dish.

1.5w x 34.4dBi = 4131w ERP!

#uWave #HamRadio #HamR #AmateurFunk #アマチュア無線 #AmachuaMusen

Braved the storm this afternoon to do some 24GHz (12.5mm wavelength) #MicrowaveRadio #AmateurRadio.

One contact made with Pete G1DFL over a 24KM path on #SSB and #DStar. 59+20dB both ways.

#Icom #IC705 IF and #Wavelab based transverter & 1.5w PA into a 30cm Andrew dish.

1.5w x 34.4dBi = 4131w ERP!

#uWave #HamRadio #HamR #AmateurFunk #アマチュア無線 #AmachuaMusen

Rain has stopped for a while, so put a wire antenna up and having a listen around the bands… #HamRadio #HamR #AmateurRadio #AmateurFunk #Icom #IC705 #QRP #AH705 #Shortwave #VanLife #RVLife #Camping

Rain has stopped for a while, so put a wire antenna up and having a listen around the bands… #HamRadio #HamR #AmateurRadio #AmateurFunk #Icom #IC705 #QRP #AH705 #Shortwave #VanLife #RVLife #Camping

Rain has stopped for a while, so put a wire antenna up and having a listen around the bands… #HamRadio #HamR #AmateurRadio #AmateurFunk #Icom #IC705 #QRP #AH705 #Shortwave #VanLife #RVLife #Camping

Rain has stopped for a while, so put a wire antenna up and having a listen around the bands… #HamRadio #HamR #AmateurRadio #AmateurFunk #Icom #IC705 #QRP #AH705 #Shortwave #VanLife #RVLife #Camping

Rain has stopped for a while, so put a wire antenna up and having a listen around the bands… #HamRadio #HamR #AmateurRadio #AmateurFunk #Icom #IC705 #QRP #AH705 #Shortwave #VanLife #RVLife #Camping

I think it was more effort to get the image on the radio than it was designing the QSL card! #ic705

I think it was more effort to get the image on the radio than it was designing the QSL card! #ic705

I think it was more effort to get the image on the radio than it was designing the QSL card! #ic705

For #hamRadio fans of #js8, it is #js8QsoParty time again!

https://js8call.groups.io/g/main/viewevent?repeatid=12902&eventid=1597224&calstart=2024-06-08

Problem encountered: After finally upgrading from Debian Bullseye to Debian Bookworm, the old #IC705 sound card string I had used became unreliable; I had to switch.

Highlight thus far was reading a message that some nice person in Florida, USA left for me on their system some time last November. This felt a bit like finding a message in a bottle on a beach specifically written for me!

More fun later today! 😄

For #hamRadio fans of #js8, it is #js8QsoParty time again!

https://js8call.groups.io/g/main/viewevent?repeatid=12902&eventid=1597224&calstart=2024-06-08

Problem encountered: After finally upgrading from Debian Bullseye to Debian Bookworm, the old #IC705 sound card string I had used became unreliable; I had to switch.

Highlight thus far was reading a message that some nice person in Florida, USA left for me on their system some time last November. This felt a bit like finding a message in a bottle on a beach specifically written for me!

More fun later today! 😄

For #hamRadio fans of #js8, it is #js8QsoParty time again!

https://js8call.groups.io/g/main/viewevent?repeatid=12902&eventid=1597224&calstart=2024-06-08

Problem encountered: After finally upgrading from Debian Bullseye to Debian Bookworm, the old #IC705 sound card string I had used became unreliable; I had to switch.

Highlight thus far was reading a message that some nice person in Florida, USA left for me on their system some time last November. This felt a bit like finding a message in a bottle on a beach specifically written for me!

More fun later today! 😄

For #hamRadio fans of #js8, it is #js8QsoParty time again!

https://js8call.groups.io/g/main/viewevent?repeatid=12902&eventid=1597224&calstart=2024-06-08

Problem encountered: After finally upgrading from Debian Bullseye to Debian Bookworm, the old #IC705 sound card string I had used became unreliable; I had to switch.

Highlight thus far was reading a message that some nice person in Florida, USA left for me on their system some time last November. This felt a bit like finding a message in a bottle on a beach specifically written for me!

More fun later today! 😄

I grabbed one of these for my #ic705 from Amazon in the UK. Thanks @oh8hub for the tip!
https://mastodon.radio/@oh8hub/111620156368683104