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In: Audio, Computer
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I learned about sshfs when using Daphile, the music server and player package for Intel PC’s. Daphile should connect to my Mac to access my iTunes library. I tried this before using SMB file sharing, but this failed due to sleep-wake cycles of the Mac. This made the SMB connection unreliable. Recent versions of Daphile support sshfs, and I hoped to avoid the issues I had with SMB. sshfs requires only a ssh account on the server and uses the sftp protocol to transfer data. Unfortunately, my Mac went to sleep even during a sftp file transfer. With ssh, you can block sleep with settingRead More →

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In: Amateur Radio, Audio, Computer
With: 4 Comments

Dire Wolf is a sound card based modem for packet radio. It can be downloaded for Windows and Linux here: https://github.com/wb2osz/direwolf Although there is a reference to MacOS, there are no further build instructions for Mac. Google reveals some info: one site references an outdated version, the other one proposes to install the brew build/port environment to provide the cmake tool. Installing an environment like brew for just one tool, which actually is a build tool by itself, is .. well .. odd. So I decided to build Dire Wolf on Mac without any hacks or special tools. After using the result for some time,Read More →

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In: Amateur Radio, Audio
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Both the IC-7300 and the IC-9700 have an IF output option. A great feature that enables the receive of all kinds of exotic transmissions. On the IC-7300, Icom pitched this feature at DRM receive. Soon after the IC-7300 launched, it became clear that the IF output bandwidth varies with the receive mode setting, which is illogical (Mr. Spock). For DRM receive, all is fine: set mode to AM, connect something like DREAM to the IF output and listen to PC audio. For CW skimmer, it’s a little more problematic, so maybe Icom only had DRM receive in mind when designing this. It will work, butRead More →

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In: Amateur Radio, Audio
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“My IC-7300 has lower power output compared to my previous transceiver.” Yes, with compressor off that’s true. Is the IC-7300 broken? No, it’s not. So what is wrong here? Often, the resulting discussion is about peak meters, PEP, settings, the weather and cosmic radiation. By chance I noticed, when changing tune power levels in WSJT-X, (the slider on the right) that the IC-7300 ALC has very fast attack time. An input level increase above max output level is corrected very quickly (to avoid overshoot). But then the reverse action, the same input level decrease, is followed very slowly by the ALC. It takes up toRead More →