W6IWI, Tucson AZ

We moved from Arvada CO to Tucson AZ in 2021. An archive of the Colorado station is here. This page describes the current station in AZ.




Favorite band, image from the cover of a recent CRHS Journal, an old Schlitz magazine ad, Solar-Terrestrial Data showing conditions for HF and VHF bands and the MUF for Boulder CO, something about FT8, the W6IWI QSL card, view of W6IWI Mobile. The Optimal Working Frequency is about 0.85 times the Maximum Usable Frequency.

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The call letters W6IWI were first used by Kauko Hallikainen in the 1930s (1933 license, 1937 ARRL membership). 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. In December 1969, I took the exam for the First Class Radiotelephone License with Radar Endorsement at the FCC office in San Francisco. That license was later replaced by the FCC with the General Radiotelephone Operator's License. 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 RTTY, CW and SSB into a Zero Five 30 Foot Flagpole Antenna. VHF and UHF FM are covered with a Baofeng UV-5R and a Wouxun KG-UV-6X. The Wouxun KG-UV-6X normally drives a Diamond X50A vertical antenna at home. Mobile info is here.

HF Station Details

Click in a box in the block diagram for more details.

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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 or time changes greater than 1 hour are shown in bold. The Rx links link to the QRZ page for the station. The SNR links link to a graph of signal to noise ratio versus time for that receiver, mode (CW or RTTY), and band (data limited to 100 spots from RBN)

The background color is green if the distance is greater than 3,000 miles. The Relative Distance column has a * for every 200 miles.


RBN Data for W6IWI, lat/long 32.233624, -110.870743 as reported by RBN.

TimeRxFreq (kHz)SNRModeSpeedRx LocationDistance and BearingRelative Distance
2246z 29 MayWE9V 14083.8 21 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
2246z 29 MayAC0C-1 14083.9 31 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2246z 29 MayK9LC 14083.9 13 dB RTTY45 bpsRockford, IL2227 km (1384 miles) at 53.7 degrees******
0410z 27 MayWZ7I 7052.0 22 dB CW15 wpmPipersville, PA3304 km (2053 miles) at 63.8 degrees**********
0359z 27 MayK3PA-1 7052.0 27 dB CW16 wpmTonganoxie, KS1626 km (1010 miles) at 57.4 degrees*****
0359z 27 MayK1RA 7052.0 17 dB CW16 wpmWarrenton, VA3063 km (1903 miles) at 67 degrees*********
0359z 27 MayVE6JY 7052.0 31 dB CW16 wpmLamont, AB2394 km (1488 miles) at 356.9 degrees*******
0406z 26 MayKM3T 7110.0 17 dB CW16 wpmAmherst, NH3617 km (2248 miles) at 59.6 degrees***********
0406z 26 MayNG7M 7110.0 19 dB CW15 wpmSyracuse, UT987 km (613 miles) at 354.3 degrees***
0406z 26 MayKM3T-3 7110.0 17 dB CW15 wpmAmherst, NH3617 km (2248 miles) at 59.6 degrees***********
0334z 25 MayN6TV 7110.0 31 dB CW16 wpmSan Jose, CA1141 km (708 miles) at 302.1 degrees***
0334z 25 MayK5TR 7110.0 26 dB CW15 wpmAustin, TX1215 km (755 miles) at 97.2 degrees***
0334z 25 MayWA7LNW 7110.0 43 dB CW17 wpmWashington, UT595 km (369 miles) at 337.3 degrees*
0328z 25 MayK2PO/7 7110.0 31 dB CW13 wpmPortland, OR1795 km (1115 miles) at 327.8 degrees*****
0328z 25 MayK6FOD 7110.0 37 dB CW13 wpmSouth Pasadena, CA706 km (438 miles) at 289.1 degrees**
2050z 24 MayAC0C-1 14083.9 26 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2050z 24 MayW6YX 14083.9 34 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2050z 24 MayKE3BK 14083.9 34 dB RTTY45 bpsMountain House, CA1149 km (714 miles) at 305.3 degrees***
2228z 22 MayWE9V 14083.8 14 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
2228z 22 MayW6YX 14083.9 24 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2228z 22 MayK6FOD 14083.9 22 dB RTTY45 bpsSouth Pasadena, CA706 km (438 miles) at 289.1 degrees**
2228z 22 MayAC0C-1 14083.9 38 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
0227z 22 MayWE9V 14083.8 40 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
0227z 22 MayAC0C-1 14083.9 41 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
0227z 22 MayKH6LC 14083.9 18 dB RTTY45 bpsKeaau, HI4652 km (2891 miles) at 264.3 degrees**************
0227z 22 MayVE7CC 14083.9 16 dB RTTY45 bpsMaple Ridge, BC2120 km (1317 miles) at 336.1 degrees******
0227z 22 MayK9LC 14083.9 32 dB RTTY45 bpsRockford, IL2227 km (1384 miles) at 53.7 degrees******
0227z 22 MayW6YX 14083.9 46 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
0019z 22 MayWZ7I 14083.9 13 dB RTTY45 bpsPipersville, PA3304 km (2053 miles) at 63.8 degrees**********
0019z 22 MayVE7CC 14083.9 11 dB RTTY45 bpsMaple Ridge, BC2120 km (1317 miles) at 336.1 degrees******
0019z 22 MayWE9V 14083.8 25 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
0019z 22 MayAC0C-1 14083.9 42 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
0019z 22 MayK9LC 14083.9 17 dB RTTY45 bpsRockford, IL2227 km (1384 miles) at 53.7 degrees******
0019z 22 MayW6YX 14083.9 32 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
1927z 21 MayWE9V 14083.8 19 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
1927z 21 MayAC0C-1 14083.9 31 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
1927z 21 MayW6YX 14083.9 29 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2239z 19 MayWE9V 14083.8 15 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
2238z 19 MayWZ7I 14083.9 14 dB RTTY45 bpsPipersville, PA3304 km (2053 miles) at 63.8 degrees**********
2238z 19 MayAC0C-1 14083.9 43 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2238z 19 MayW6YX 14083.9 34 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2041z 18 MayAC0C-1 14083.9 9 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2040z 18 MayW6YX 14083.9 24 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2040z 18 MayWE9V 14083.8 25 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
0054z 18 MayK9LC 14083.9 13 dB RTTY45 bpsRockford, IL2227 km (1384 miles) at 53.7 degrees******
0054z 18 MayWE9V 14083.8 26 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
0054z 18 MayW6YX 14083.9 27 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
0054z 18 MayAC0C-1 14083.9 38 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2159z 17 MayWE9V 14083.8 17 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
2158z 17 MayAC0C-1 14083.9 31 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2158z 17 MayW6YX 14083.9 33 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2045z 17 MayWE9V 14083.8 22 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
2045z 17 MayW6YX 14083.9 35 dB RTTY45 bpsStanford, CA1182 km (734 miles) at 302.2 degrees***
2045z 17 MayK9LC 14083.9 16 dB RTTY45 bpsRockford, IL2227 km (1384 miles) at 53.7 degrees******
2045z 17 MayAC0C-1 14083.9 28 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
0404z 17 MayVE6WZ 7051.8 27 dB CW16 wpmCalgary, AB2196 km (1364 miles) at 353.4 degrees******
0404z 17 MayK6FOD 7052.0 38 dB CW16 wpmSouth Pasadena, CA706 km (438 miles) at 289.1 degrees**
0404z 17 MayW2NAF 7052.0 23 dB CW16 wpmSpring Brook, PA3272 km (2033 miles) at 61.8 degrees**********
0404z 17 MayK2PO/7 7052.0 25 dB CW16 wpmPortland, OR1795 km (1115 miles) at 327.8 degrees*****
0404z 17 MayWZ7I 7052.0 24 dB CW16 wpmPipersville, PA3304 km (2053 miles) at 63.8 degrees**********
0404z 17 MayN2QT 7052.0 15 dB CW15 wpmForest, VA2924 km (1817 miles) at 69.9 degrees*********
2250z 16 MayWE9V 14083.8 14 dB RTTY45 bpsBristol, WI2309 km (1435 miles) at 53.7 degrees*******
2249z 16 MayAC0C-1 14083.9 18 dB RTTY45 bpsLouisburg, KS1632 km (1014 miles) at 59.6 degrees*****
2249z 16 May