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Recent changes to the WebSDR server system:

December 27, 2017:

- The server PC has been replaced, in a new rack-mount cabinet, with a new ASUS motherboard, additional RAM and a solid state drive.
- All receivers are now FiFi SDR receivers, each with 192 kHz coverage of its band segment...
- Eight receivers offer complete coverage of the following amateur radio bands:
--- 160 Meters, except extreme band edges.
--- 80/75 Meters, CW and Phone using three receivers.
--- 40 Meters, CW and Phone using two receivers.
--- 20 Meters, CW and Phone using two receivers.
- Hardware is available for additional bands such as 60M, 30M, 17M, and possibly some SWBC bands. However, at this time, Pieter's WebSDR server software can only accomodate eight receivers so we must wait for him to make changes. Please email Pieter with your comments.
- Additional security features have been added, including locking out IP addresses of repeat abusers.
- Some orange frequency tags have been added for the new bands. This is a work in process; if you have corrections or suggestions please email Craig.

January 23, 2018:

- A preamp was added to the 160 meter receiver to compensate for the Omni antenna's bandpass.

February 20, 2018

- Antenna switching was added to the 40 meter phone band (40ph). This receiver is on the usual Omni antenna except from 7:30am to 9:00am Pacific time, daily, when is is automatically switched to the SE Sector antenna (+15 dB @ 135 deg.) in order to accomodate users in the Baja California area. Switching can also be manual, by a sysop, on demand.

January 20,2020

- A Kiwi SDR was added to the KFS site, offering full 1.5 to 30 MHz coverage. Click here for access. See KiwiSDR for complete documentation.

March 26, 2020

- Digital signal processing enhancements have been added, thanks to the folks at Northern Utah WebSDR:
- - 1. Notch1: Formerly AUTONOTCH. Automatically filters out an interfereing carrier (beep/whistle).
- - 2. Notch2: Audio based notch filter capable of handling multiple tones - will not prevent desense from very strong carriers. Can be used with Notch1.
- - 3. DSP Noise Reduction: A digital noise filter to reduce bacjground hiss and white noise; similar to that available on modern SDR radios. It features four strength settings, plus Off. Setting 1-Low could probably be used most of the time; artifacts increase with the strength setting as is to be expected.
- - 4. High Boost A 6dB high frequency boost kneed at 1500 Hz. Use with DSP Noise Reduction to improve intelligibility of speech.
- NOTE: These new features increase the processor load in YOUR computer, so use with caution.
- Your comments please to Craig.

August 29,2020

- User adjustment of audio buffering added, thanks to the folks at Northern Utah WebSDR:
- - Increase the buffering to help reduce audio stuttering (drop outs) due to Internet delays, especially on a slow connection.