 50 Year Reunion - 2007 |
Suzanne E. Koch Fontana, CA QCWA # 12278 |
Herb became Suzanne sometime after he left Kansas City, year unknown. Bob NØUF, Webmaster
From qrz.com:
I was first licensed on May 7, 1953, at age 13, as KN6ASL and within 3 months upgraded to General Class, with K6ASL. When it was available again, I upgraded to Extra Class taking the 20 WPM requirement in the FCC office, without any problem. I also have a 2nd Class Radiotelegraph License (25WPM) and GROL.I own 6 microphones and never use them. I will never be found on SSB.
I enjoy all of the Technical aspects of Amateur Radio including designing and building all my own High Power Linear Amplifiers and Antennas. I am using a TS-930S driving the grid of a Russian GU-84B tetrode operating in Class AB1 on all HF bands (NO GROUNDED GRID USED IN ANY OF MY TETRODE AMPLIFIER DESIGNS), in an AL-1500 Housing. Electronic keying of the grid and screen and input relay together with the Vacuum output relay makes QSK very practical. I have a QSK product that is available for sale to anyone interested..
I also design and build Antennas which include long boom Quads, Quagis and Yagi's for all HF bands from 40-10 meters including Mono-Band, Dual-band, Tri-band arrays, and 160/80 shunt fed tower systems. A tri band Quagi (3 el 20, 3 el 15 and 4 el 10) with Quad Driven Element, is a very effective antenna due to the fact that the Driven Element is One Wavelength of wire that offers additional gain over the ubiquitous Dipole Driven Element with traps. Replacing the Driven Element with a Quad or other wire element, increases performance measurably.There is no interaction between bands and it is fed with hardline and a remote coaxial switch. The picture above was the first Dual Band 20/15 Quagi that was a superb 3 elements on each band. I have found that insulated yagi elements are more efficient in multi-band arrays. 10 meters was left off because the band was dead at the time.
In 1983, I built a 4 element, full size quad for 40 meters, with 5 elements for 20 interlaced on a 60 ft boom. It was spectacular working europeans and africans in the afternoon and India long-path.Someday I will complete a 2 element 80 meter Quad (linear loaded elements) that will fit in my yard. I have built 40 meter linear loaded elements that fit on 13 ft. fiberglass spreaders. A 2 or 3 element 60% Linear Loaded quad, for 40, works better than a short yagi, and the elements are not susceptable to wind damage. Antenna Experiments are a great way to keep the mind functioning at my age.
When time permits, I am designing single band, and multi-band, Grid Driven Power Amplifiers using GU-84B for 10 and 15 Meters, and GU-78B Ceramic Tetrode Tubes for use on 20, 40, 80, and 160. All amplifiers are completely QSK switched, with my own design of vacuum, and coaxial relays, together with electronic switching of the grid and screen. Amplifiers are normalized, shielded, and designed for excellent stability, with 20 dB of Power Gain (40 watts in equals 4000 watts out). Gain can always be reduced with lower grid impedances. I have also designed and built amplifiers with LDMOS/VDMOS Transistors for HF through S-band up to 10KW output.
I have a modified Dentron DTR-2000 Power Amplifier that has been modified for use on 30, 17, 12 and 10 meters using a pair of GI-7BT tubes replacing the 8877 that was previously used in the amplifier, because the cost of the tubes is much lower. They perform very well and are super reliable at a Plate Voltage of 2800 volts. An input network normalized the cathode impedance to match 50 ohms with little reactance. I modify many types of HF Power Amplifiers to enhance their performance with other lower cost tubes.
