W6IWI


Image from the cover of a recent CRHS Journal, Solar-Terrestrial Data showing conditions for HF and VHF bands and the MUF for Boulder CO, the W6IWI QSL card, view of antenna ("Wow! You must have a really big TV"), view of W6IWI Mobile. The Optimal Working Frequency is about 0.85 times the Maximum Usable Frequency.

The call letters W6IWI were first used by Kauko Hallikainen in the 1930s. See the 1934, 1936, 1937, and 1938 Amateur Radio Callbook. The 1930s QSL card was similar to that shown above (I may still have one of the originals somewhere). By 1952, the call had been reassigned to Carson Donaldson in Inglewood CA. He held it through 1977. I acquired the call in 2016. Prior to that, I held the call WA6FDN, and prior to that, WN6FDN. The WA6FDN license was first granted in 1969, with WN6FDN in 1968. WA6FDN shows up in the Summer 1969 Callbook. NL7XM offers a great service. He has over 100 years of Radio Amateur Callbooks and will find the first appearance of your callsign in the Callbook. For a reasonable cost, he'll provide certified copies of these pages verifying that the callsign was held by the particular person on this date. This is what he sent me for WN6FDN and WA6FDN.

WN6FDN started with a Heathkit DX-60 transmitter and a National NC-300 receiver running CW on HF. WA6FDN used a Viking Ranger transmitter running AM, CW, and RTTY on HF. RTTY used a Teletype model 15 printer (also see a slow motion video of a model 15 in operationg), and a model 14 typing reperf and transmitter distributor. W6IWI now uses an SEA 245 with a Dentron Clipperton-L amplifier running CW and SSB into a Cushcraft A3S with 40 meter adapter. Previosly, a HyGain TH-3JRS 3 elemement tri-band (10, 15, 20) beam was used. Finally, an inverted V for other bands (other than 40, 20, 15, and 10). VHF and UHF FM are covered with a Baofeng UV-5R and a Wouxun KG-UV-6X. The Wouxun KG-UV-6X normally drives an outside vertical antenna at home. Mobile info is here.

HF Station Details

Click in a box in the block diagram for more details. Antenna VSWR is tracked here. Your browser does not support the HTML5 canvas tag.

W6IWI HF Activity

The table below shows recent contacts logged on qrz.com.

RBN Report

The table below is generated by a PHP script that pulls JSON data from the Reverse Beacon Network, parses it, calculates distance and bearing based on latitude and longitude, then shows data for the last 100 spots. Frequency changes greater than 1 kHz are shown in bold. Reception farther than 2,000 miles is highlighted in green.

TimeRxFreq (kHz)SNRModeSpeedRx LocationDistance and Bearing
0601z 30 NovNN3RP7117.014 dBCW16 wpmWashington, DC2421.1 km (1504.4 miles) at 82.8 degrees
0601z 30 NovKD7YZ7117.022 dBCW17 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
0601z 30 NovKM3T7117.028 dBCW15 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0601z 30 NovK9LC7117.033 dBCW15 wpmRockford, IL1398.7 km (869.1 miles) at 72.7 degrees
0601z 30 NovWB6BEE7117.014 dBCW15 wpmPagosa Springs, CO310.3 km (192.8 miles) at 208.7 degrees
0601z 30 NovN6WIN-77117.043 dBCW15 wpmWickenburg, AZ911.8 km (566.6 miles) at 229.4 degrees
0601z 30 NovKU7T7117.022 dBCW15 wpmNorth Bend, WA1585 km (984.9 miles) at 308.7 degrees
0601z 30 NovW3OA7117.030 dBCW15 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0600z 30 NovWZ7I7117.034 dBCW15 wpmPipersville, PA2555.7 km (1588.1 miles) at 78.3 degrees
0600z 30 NovWA7LNW7117.016 dBCW15 wpmWashington, UT749.5 km (465.7 miles) at 251.1 degrees
2104z 29 NovW1NT-614115.027 dBCW16 wpmNewton, NH2864.2 km (1779.7 miles) at 71.6 degrees
2104z 29 NovW3OA14115.038 dBCW16 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
2104z 29 NovW3RGA14115.028 dBCW16 wpmSunbury, PA2417 km (1501.8 miles) at 77.4 degrees
2104z 29 NovK9LC14115.024 dBCW15 wpmRockford, IL1398.7 km (869.1 miles) at 72.7 degrees
2104z 29 NovKD7YZ14115.025 dBCW16 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
2101z 29 NovAA4VV14115.023 dBCW15 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
1923z 29 NovWZ7I21132.037 dBCW15 wpmPipersville, PA2555.7 km (1588.1 miles) at 78.3 degrees
1922z 29 NovW3RGA21132.032 dBCW16 wpmSunbury, PA2417 km (1501.8 miles) at 77.4 degrees
1922z 29 NovW3UA21132.16 dBCW16 wpmBedford, NH2830 km (1758.5 miles) at 71.6 degrees
1733z 29 NovKD7YZ21132.030 dBCW12 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
1733z 29 NovW3OA21132.040 dBCW12 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
1733z 29 NovEA8/DF4UE21131.930 dBCW12 wpmLichtenwald, Germany8139.8 km (5057.8 miles) at 66.5 degrees
1733z 29 NovAA4VV21132.030 dBCW12 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0559z 29 NovW3OA7105.031 dBCW15 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0559z 29 NovAA4VV7105.027 dBCW15 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0558z 29 NovW3OA7105.032 dBCW15 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0554z 29 NovW2AXR7104.928 dBCW15 wpmSyracuse, NY2227 km (1383.8 miles) at 71 degrees
0551z 29 NovWZ7I7105.027 dBCW15 wpmPipersville, PA2555.7 km (1588.1 miles) at 78.3 degrees
0551z 29 NovN5RZ7105.020 dBCW17 wpmFredericksburg, TX1178 km (732 miles) at 148.9 degrees
0549z 29 NovKD7YZ7105.026 dBCW15 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
0549z 29 NovAA4VV7105.021 dBCW16 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0526z 29 NovW3OA7105.029 dBCW15 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0517z 29 NovW1NT-67105.017 dBCW15 wpmNewton, NH2864.2 km (1779.7 miles) at 71.6 degrees
0517z 29 NovN5RZ7105.022 dBCW15 wpmFredericksburg, TX1178 km (732 miles) at 148.9 degrees
0336z 29 NovW3OA7105.026 dBCW12 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0336z 29 NovAA4VV7105.016 dBCW12 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0335z 29 NovKD7YZ7105.026 dBCW14 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
0335z 29 NovWA7LNW7105.024 dBCW14 wpmWashington, UT749.5 km (465.7 miles) at 251.1 degrees
0335z 29 NovKM3T7105.016 dBCW14 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0332z 29 NovAA4VV7105.016 dBCW16 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0332z 29 NovNN3RP7105.07 dBCW15 wpmWashington, DC2421.1 km (1504.4 miles) at 82.8 degrees
0332z 29 NovKM3T7105.015 dBCW17 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0332z 29 NovWA7LNW7105.022 dBCW16 wpmWashington, UT749.5 km (465.7 miles) at 251.1 degrees
0331z 29 NovW3OA7105.027 dBCW14 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0326z 29 NovKD7YZ7105.024 dBCW17 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
0028z 29 NovKM3T7105.023 dBCW12 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0021z 29 NovN0OI7105.026 dBCW13 wpmPerris, CA1256.5 km (780.8 miles) at 242.7 degrees
0021z 29 NovWA7LNW7105.040 dBCW14 wpmWashington, UT749.5 km (465.7 miles) at 251.1 degrees
0021z 29 NovAA4VV7105.029 dBCW14 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0018z 29 NovKM3T7105.023 dBCW15 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0018z 29 NovW2AXR7104.928 dBCW15 wpmSyracuse, NY2227 km (1383.8 miles) at 71 degrees
1834z 28 NovWA7LNW7117.036 dBCW14 wpmWashington, UT749.5 km (465.7 miles) at 251.1 degrees
1834z 28 NovWB6BEE7117.040 dBCW14 wpmPagosa Springs, CO310.3 km (192.8 miles) at 208.7 degrees
1826z 28 NovK9LC14114.022 dBCW14 wpmRockford, IL1398.7 km (869.1 miles) at 72.7 degrees
1824z 28 NovWZ7I14114.022 dBCW16 wpmPipersville, PA2555.7 km (1588.1 miles) at 78.3 degrees
1824z 28 NovW3OA14114.026 dBCW16 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
1824z 28 NovK2PO/714114.028 dBCW14 wpmPortland, OR1584 km (984.3 miles) at 299.4 degrees
1822z 28 NovKM3T-214114.034 dBCW14 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
1822z 28 NovKM3T14114.028 dBCW14 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
1822z 28 NovW1NT-614114.026 dBCW14 wpmNewton, NH2864.2 km (1779.7 miles) at 71.6 degrees
1822z 28 NovW3UA14114.129 dBCW14 wpmBedford, NH2830 km (1758.5 miles) at 71.6 degrees
1822z 28 NovKD7YZ14114.027 dBCW14 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
1822z 28 NovAA4VV14114.014 dBCW13 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
1814z 28 NovWE9V14113.933 dBCW13 wpmBristol, WI1477.2 km (917.9 miles) at 71.8 degrees
1814z 28 NovWZ7I14114.018 dBCW13 wpmPipersville, PA2555.7 km (1588.1 miles) at 78.3 degrees
1814z 28 NovK9LC14114.026 dBCW13 wpmRockford, IL1398.7 km (869.1 miles) at 72.7 degrees
1812z 28 NovNN3RP14114.07 dBCW13 wpmWashington, DC2421.1 km (1504.4 miles) at 82.8 degrees
1812z 28 NovKM3T-214114.032 dBCW14 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
1812z 28 NovN5RZ14114.034 dBCW13 wpmFredericksburg, TX1178 km (732 miles) at 148.9 degrees
1812z 28 NovKM3T14114.032 dBCW13 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
1809z 28 NovVE6WZ14114.021 dBCW15 wpmCalgary, AB1526 km (948.2 miles) at 335.4 degrees
1809z 28 NovKD7YZ14114.026 dBCW14 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
1809z 28 NovW3UA14114.130 dBCW14 wpmBedford, NH2830 km (1758.5 miles) at 71.6 degrees
1808z 28 NovW3OA14114.027 dBCW14 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
1808z 28 NovK2PO/714114.038 dBCW14 wpmPortland, OR1584 km (984.3 miles) at 299.4 degrees
0219z 28 NovKM3T7118.015 dBCW16 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0218z 28 NovKM3T7118.016 dBCW17 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0043z 28 NovW3RGA7123.025 dBCW15 wpmSunbury, PA2417 km (1501.8 miles) at 77.4 degrees
0043z 28 NovW2AXR7122.923 dBCW15 wpmSyracuse, NY2227 km (1383.8 miles) at 71 degrees
0043z 28 NovN0OI7123.016 dBCW15 wpmPerris, CA1256.5 km (780.8 miles) at 242.7 degrees
0043z 28 NovW3OA7123.019 dBCW15 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0043z 28 NovAA4VV7123.018 dBCW15 wpmLexington, NC2229.2 km (1385.2 miles) at 93 degrees
0008z 28 NovW3OA7118.020 dBCW14 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0006z 28 NovKD7YZ7118.021 dBCW15 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
0005z 28 NovN0OI7118.018 dBCW18 wpmPerris, CA1256.5 km (780.8 miles) at 242.7 degrees
0003z 28 NovK2PO/77118.024 dBCW15 wpmPortland, OR1584 km (984.3 miles) at 299.4 degrees
0003z 28 NovWZ7I7118.019 dBCW16 wpmPipersville, PA2555.7 km (1588.1 miles) at 78.3 degrees
0538z 27 NovK9LC7108.012 dBCW14 wpmRockford, IL1398.7 km (869.1 miles) at 72.7 degrees
0537z 27 NovW2AXR7107.913 dBCW14 wpmSyracuse, NY2227 km (1383.8 miles) at 71 degrees
0537z 27 NovKM3T-27108.014 dBCW17 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0537z 27 NovW3RGA7108.020 dBCW14 wpmSunbury, PA2417 km (1501.8 miles) at 77.4 degrees
0537z 27 NovKM3T7108.014 dBCW14 wpmAmherst, NH2817.1 km (1750.5 miles) at 71.8 degrees
0537z 27 NovN6WIN-77108.021 dBCW14 wpmWickenburg, AZ911.8 km (566.6 miles) at 229.4 degrees
0537z 27 NovW1NT-67108.09 dBCW14 wpmNewton, NH2864.2 km (1779.7 miles) at 71.6 degrees
0536z 27 NovW3OA7108.030 dBCW15 wpmMooresville, NC2182.8 km (1356.3 miles) at 94.3 degrees
0536z 27 NovK2DB7108.022 dBCW15 wpmHomosassa, FL2407.7 km (1496.1 miles) at 113.3 degrees
0536z 27 NovKD7YZ7108.025 dBCW15 wpmGreenup, KY1919.2 km (1192.5 miles) at 86.8 degrees
0536z 27 NovN6TV7108.019 dBCW14 wpmSan Jose, CA1460.9 km (907.8 miles) at 264.6 degrees
0536z 27 NovN5RZ7108.036 dBCW15 wpmFredericksburg, TX1178 km (732 miles) at 148.9 degrees
0536z 27 NovN0OI7108.023 dBCW15 wpmPerris, CA1256.5 km (780.8 miles) at 242.7 degrees

The plot below shows a historic plot of W6IWI HF CW activity.

Search RBN for Your Station

Enter your call and click Submit to see what RBN has on you. This can be useful for testing different antennae. Transmit TEST DE CALLSIGN a few times on one antenna, switch to the other, change frequency a bit (maybe 100 Hz) and transmit again. You should see spots recorded at several locations for each antenna. Compare the reported SNR to get an idea how the different antennae perform. Click Show/Hide on the right side of the results page to enable a map with grayline showing the location of the receive sites. If your site is not shown correctly, update your location at QRZ.COM. Once logged in, select your call (right side of menu bar), then Edit your call, then Map, Grid Square and Coordinate settings. RBN uses these coordinates to place your station.
Call Sign:

Find Hams in your Neighborhood

Amateur Radio License Map maps US amateur radio operators in an area centered on a call sign, grid square, zip code, or street address. Pretty neat!

The Ham Shack

Here's an overall view of the operationg position (a rolltop desk). On the top shelf ia a lamp with a mechanical watt-hour meter. To the right of that are the two VHF/UHF handheld radios (Baofeng UV-5R and a Wouxun KG-UV-6X). The Wouxon is used as a base station with an outside antenna and a speaker/microphone. To the right is the Dentron Clipperton-L with a pair of Daiwa 501H RF wattmeters on top. The left one measures the transceiver output power, while the right one reads the amplifier output power. To the right of that is a USL CM-8E cinema booth monitor. The center channel of the CM-8E is bridged across the balanced audio line between the SEA 245 and its control head. It's used as a headphone amplifier since the SEA 245 does not have a headphone jack. In addition, the equalizer in the CM-8E is set to a narrow bandpass to act as a CW filter. On the desktop surface, starting on the left is my Cisco phone for work. To the right is the Chromebook open to the Reverse Beacon Network page. To the right of that is the control head for the SEA 245. Below that is the handheld IR remote control for the antenna rotator. To the right (the silver box) is a switch that switches 12 VDC to the MFJ-4712 antenna switch. Finally, the bug and key are to the right.
Dentron Clipperton-L with the cover removed. The power supply is on the left, the output tuning network on the front right, and the four 572B triodes on the right rear.
Here's a view of the SEA 245 control head. It has an RS-485 bus (called SEABUSS) that carries control information between the control head and the trnsceiver. It can also communicate with the SEA 1630 tuner, but I currently have the tuner operating stand alone. Instead of being on SEABUSS, the tuner (of course) gets the RF and PTT. It returns an open collector signal that goes low when the tuner has tuned. When transmitting, the SQL indicator (squelch) is replaced with TND indicating the tuner has tuned the antenna. Besides SEABUSS, the control head connects to the SEA 245 transceiver with a balanced audio line, the PTT line, a power on/off control (switch to ground to turn on the radio), and switched +12V. The balanced audio line is run as an analog tristate bus. When receiving, the transceiver puts audio on the bus. When transmitting, the control head puts audio on the bus. On a ship, there are typically multiple control heads connected to a single transceiver using SEABUSS.
The antenna switch control box and antenna rotator are to the right of the transceiver control head. The antenna switch control box is just an SPST light switch in a 4x4 box. It switches 12VDC to the MFJ-4712. When the switch is open, the inverted V is driven by the tuner. When the switch is closed, the Yagi is driven. To the right of the antenna switch control box is the antenna rotator control. This is a standard TV antenna rotator. We'll see how long it lasts driving the Cushcraft A3-S

On the right is an MFJ-557 code practice oscillator. The straight key keys both the code practice oscillator and the SEA 245 transceiver. The code practice oscillator provides "side tone." You may see a couple diodes on the left side of the straight key. They provide isolation between the code practice oscillator and the SEA 245 transceiver.

To the left of the MFJ-557 is a Vibroplex Blue Racer Deluxe. This is serial number 229386 originally owned by my father, K. E. Hallikainen (Hal). This list puts the manufacture date as 1962, which seems a bit late. Note the Round Arm Vari-Speed Accessory added to the bug. This slows it down to about 13 WPM. The bug is connected in parallel with the straight key so it also keys both the code practice oscillator and the SEA 245 transceiver.

This is the actual SEA 245 transceiver (bottom right black box with blue Power Pole connectors). This photo needs updating. Now the antenna tuner sits on top of the transceiver and the power supply has been replaced with an Astron supply.

The Work Bench

I work from home designing equipment for movie theaters. This mess is where I do the work. Test equipment includes a Belar FMM-2 modulation monitor. On top of that is homebrew frequency converter that converts several frequencies to the 650 kHz IF input frequency. The infrared transmitters I work on transmit FSK data at 1.8 MHz, and linear FM audio at 2.3 MHz and 2.8 MHz. The frequency converter and the FMM-2 allow the quality of the audio to be measured. Other equipment shown includes an audio voltmeter, oscilloscope, audio generator, distortion analyzer, and a small USB logic analyzer. There's a desktop Windows computer and a rack mount Linux computer (under the monitor) and a KVM to switch between them. On top of the Windows computer is a Netgear Ethenrnet hub so Ethernet traffic can be analyzed with Wire Shark. A debugger is connected to some closed captioning equipment to debug new code as it's developed. The large microphone is used for web conferences. The PTT switch on it enables the microphone and mutes the speakers making conference calls pretty easy.

Antenna Tuner

Here's a view of the Seacom SEA 1630 antenna tuner with the cover removed. It is designed to drive a wire antenna on a ship, so there is a ceramic insulator on the top to connect the wire to. Here, the tuner is driving coax (to the balun driving the inverted V). Therefore, an SO-239 was added to the side of the tuner. AWG #6 wire connects the SO-239 to the antenna tuner output at the ceramic insulator and to the ground plate in the tuner. The tuner is a pi network with capacitors to ground at the input and ouput and an inductor between the input and output. Both the inductor and capacitors consist of several binary weighted inductors or capacitors. Relays short out the inductor sections when they are not needed. Relays also ground the low side of the input and output capacitors as required. The microcontroller (in the metal box) drives the relays as appropriate to put the minimum SWR on the input. Also visible on the bottom right of the tuner is a "doorbell button." This allows the transmitter to be keyed at the tuner for checking its operation. This photo shows the tuner when it was outside As noted in the block diagram above, the tuner is now in the shack, immediately above the transceiver. It is electrically between the SEA245 and the Dentron Clipperton-L. When the amplifier is not in use, its internal bypass relay (also used in receive) connects the input to the output. The SEA 1630 then matches the antenna, as seen at this end of the transmission line, to the transceiver. When the Dentron Clipperton-L is in use, the SEA 1630 matches the transceiver to the untuned input of the Dentron Clipperton-L.

Power Line Noise

My adventures with power line noise. Xcel Energy did a lot of work to solve it. Now I see some noise the day after a rain storm, but generally noise is not synchronized with the line. I look forward to a power outage go see how much noise goes away. There seems to still be quite a bit of noise, but it is not synchronized with the power line. It could be switching power supplies in the neighborhood or may just be th way the HF fands are. I can drop AC power to the QTH and the noise level remains the same, so it appears to be from outside.

Ham Radio Resources

Ham radio resources will be collected here.

Interesting Stuff

Here's a short list of interesting radio stuff.
Broadcast History - My own online collection of broadcast equipment manuals along with LOTS of other interesting links.
California Histrical Radio Society - A great group of people collecting old broadcast equipment and history. They publish an excellent magazine that has included stuff like restoration of a mechanical television and other wonderful articles. The museum is in a 1900 telephone exchange building in Alameda CA.
Restoring a Teletype model 19 - Great series of videos on restoring a Model 19. Includes a visit to Mr. RTTY, the ultimate Teletype parts supplier.
Maritime Radio Historical Society - An operating Morse radiotelegraph shore station. The transmit site is in Bolinas CA, and the receive site and control point is in Pt. Reyes Station CA. Here are some photos from our visit in 2015. This is a wonderful project!
Remote Ham Radio - Can't put up a 200 foot tower with a four element 40 meter Yagi and 1.5 kW amplifier in your backyard? Operate one of these stations from your kitchen table with a web browser. There's an annual membership fee plus a per minute charge for use of the stations. But, this is an interesting way to get on HF from a condo with strict CC&Rs.
Reverse Beacon Network - Software defined radio receivers around the world are continuously monitoring the ham bands. These SDR receivers drive "skimmer" software that decodes CW and various digital modes. Send CQ or TEST DE CALL and see where you are received, the signal to noise ratio, and the speed (such as CW WPM). Another amazing intersection of ham radio and the Internet.
Web SDR - Software defined radio receivers around the world. In simplified form, these receivers connect an antenna to an analog to digital converter which drives an Ethernet interface (with an FPGA between) which drives a server. All tuning, filtering, and demodulation happens in the server. Multiple users use a web interface to receive the frequency of interest to that user. Each user operates their SDR software independently. It's a great way to hear what your transmitter sounds like. The web sdr can record the audio and send you the audio file. Key clicks, chirp, good speech quality? Web SDR lets you know.
Kiwi SDR - Another software defined radio running on very limited hardware. It supports 4 users and includes decoders for CW, RTTY, FAX, Loran C, Navtex, and more (see the list under Extension)
Jean Shepherd was an announcer on WOR and wrote and narrated the movie "A Christmas Story." He talked about ham radio several times on WOR.Jean Shepherd audio clips
Contra Dance - Great Fun!

Comments?

I look forward to your comments! Write me at harold@w6iwi.org.