Server #2

Welcome to the secondary server of the KFS WebSDR, located six miles south of Half Moon Bay, California USA. This facility was established by Craig, W6DRZ (sk) and is maintained by a group of local and remote volunteers. A complete technical description, operating tips, updated propagation information, and a donation opportunity can all be found on the ABOUT page. More information on the worldwide WebSDR project can be found on www.websdr.org.

This server covers bands/frequencies not covered by the main server using hardware that is on-site as a backup to the main server:  Please note that this server may go offline if its hardware is needed to restore operation of the main server.

If you are looking for the main KFS WebSDR server (#1) you may find it here: websdr1.kfsdr.com:8901

This server presently covers the following bands:

• 160 Meters:  About 90% of the 160 meter band is covered using the "SouthWest" TCI-532 antenna:  This antenna is being used below its design frequency and as such, its coverage is more or less omnidirectional.  Due to on-site equipment, there is some interference present on this receiver:  We are looking into the sources of these signals.
• 12 Meters:  This band is covered in its entirety.
• 10 Meter FM:  The top portion of the 10 meter band (FM, repeaters).  There is a gap (from approx. 28.65-29.00 MHz) between the coverage of this receiver and the 10 meter receiver on the main server.

It may be possible to add coverage of other frequency segments in the future - let us know your thoughts about this.

An outstanding alternate system in the Western USA is Northern Utah WebSDR, North of Salt Lake City.
Also, check out W7RNA Phoenix WebSDR in Arizona
For HF reception from the East coast, use either NA5B WebSDR in Washington, DC. or Home of K3FEF & W3TKP in Pennsylvania.

KFS SDR #2 NEWS  - Please refer to the main KFS WebSDR server for general news about the KFS system:
(Dec 12 '22) This server (#2) brought online for testing after replacement of the main KFS server using the spare RSP1a and the FiFiSDR receivers from the "old" (KFS Version 2) server.
(Dec 15 '22) Testing/configuration/evaluation of 160M, 12M and upper 10M FM receivers began.
(Dec 20 '22) This server made public - but only at "WebSDR.org". It might be interesting to see how many people "discover" it that way.
(Jan 20 '24) A link for this server from the main KFS server (#1) was added.
(March 31 '24) - It is with regret that we note the passing of Craig, W6DRZ, who established the KFS WebSDR nearly a decade ago for the benefit of the amateur radio community. We ask that you offer your own form of remembrance for Craig and to respect the privacy of his family.

? dBm  Peak ? dBm  ?
 S-meter squelch:        
  

---

Volume:

---

Mute Squelch Notch1
Notch2 High Boost

---

 DSP Noise Reduction: Off Low Medium High Strong Extreme
More info about Noise Reduction, Notch2 & High Boost here

---

Audio buffering: +31.25ms +62.5ms +125ms +250ms +500ms +1sec +2sec
  More buffering may help with drop-outs or slow/jittery connections.

---

  Vari-Notch (Hz):   Off

---

   CW Peak (Hz):   Off    Ref. Tone

---

Gain control:   
RF AGC Alt AGC Manual

Gain:

Try "Alt AGC" for better AM reception, particularly with QSB.

---

devpk dev_avg dev_pkavg   

---

Audio recording: start

Recorded audio includes any DSP filtering, Notch2 or High Boost.
Your browser may not support downloading the recording; Try it anyway, but if it doesn't work, please try a recent version of Firefox, Chrome or Opera.

---

Audio channel: Left Both Right

---

Sig. strength plot: none fast slow fast w/pk slow w/pk