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Are Your Data Modes Transmissions Clean? Video Tutorial

The amateur bands are filling up with very dirty data modes transmissions, we are seeing single PSK and JT65 transmissions taking out the entire modes’ sub-bands in some instances and this is entirely avoidable, not to mention completely unacceptable.

This video is an addendum to my previous video regarding the setting up PowerSDR for data-modes (digi-modes) because there are some settings in Windows which can significantly contribute to IMD on TX.

We take a walk-through of VAC’s (Virtual Audio Cable) Windows driver back-end which defaults settings to 44.1kHz potentially adding unwanted sample rate conversions which can introduce further IMD, then look at how to have Windows reduce audio drive, cleaning up the outgoing AFSK.

The motto of the video is, ensure your ALC compression is zero and that the ALC is in negative figures of between -0.5 to -1.0 dB (legacy radios = NO ALC deflection at all) to guarantee minimum IMD resulting from audio drive levels. Depending on the mode, you may want to drive at even lower levels.
Video Rating: 4 / 5

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APRS Remote Power Control with the Argent Data Tracker2 and Nuvi 350

A quick video demonstrating the remote power control capabilities of the OT2m Tracker from Argent Data.

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Organization Pack – 10 Micro USB 2.0 Data Cables, labels, ties, USA

Organization Pack – 10 Micro USB 2.0 Data Cables, labels, ties, USA

Organization Pack - 10 Micro USB 2.0 Data Cables, labels, ties, USA

  • High speed cable 480 Mbps. Ideal for charging your devices.
  • Many cables are not built to do anything but charge your device. Generally the thicker the cable the better. Flying Ugly offers copper braided shielding to eliminate potential EMI (Electro Magnetic Interference). This means your cable works, charging at a 25% faster rate.
  • Copper shielding for quality and strength
  • Use to connect your backup devices, printer and other larger devices.
  • Get organized. Use color coded labels to identify more about that cable (printer, backup, Sally, John..)

Get organized with this great value for high speed cable with versatility to charge your smartphone and also transfer data successfully on your larger devices for backup, printing and more.

List Price: $ 25.00

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Episode 49 – Using D-STAR Low and High Speed Data

We’re going to guess that most D-STAR users only use voice. Low speed data is part of every transmission, but it requires a computer (or maybe a smart phone)…
Video Rating: 5 / 5

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Nuvi 350 APRS Test with Argent Data OT2m

A quick video of my APRS setup.
Video Rating: 5 / 5

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NTIA: No Objection to Additional Data Modes on 60 Meters

In response to requests for clarification from the ARRL, the National Telecommunications and Information Administration (NTIA) has confirmed that it has no objection to the use of a broader range of data emissions by amateurs on the five 5 MHz frequencies on 60 meters. ARRL’s original understanding was that the NTIA preferred that the use of 2K80J2D emission be limited to Pactor III. The NTIA n…

American Radio Relay League | Ham Radio Association and Resources

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