Sid Antoch, AF7YE


Welcome to my ham radio page. I got my first ham license, K7MTM, in high school. This was when vacuum tubes were still popular but electronics was evolving to transistors. I built my first CW transmitter using 3 vacuum tubes (6v6, 807, and 80). I used a modified Zenith shortwave radio for a receiver and operated on 40 meters CW. I also operated on 6 meters AM phone.

I was unable to continue with this hobby when I went to college and let my license expire. After working in the electronics industry and teaching for many years I decided to renew my hobby in retirement and got a new ham license, AF7YE.

I plan to use this page to post topics relating to communications technology. The presentations on the these topics will be similar to my most popular book: Op-Amps, Simulations and experiments. The objective is to help students, designers, and experimenters use simulation tools to design and evaluate rf circuits.

My current radio equipment is listed below.  The Comet CHA-250B hf vertical is has now been installed. It appears to work ok receiving on 80 meters. Made a few contacts on 80 meters but still evaluating transmission ability. I will be trying a new 82 foot dipole for 80 meters and 40 meters (Alpha Delta DX-DD).

HF Tranceiver: Yaesu FT-920, 100W PEP SSB     Microphone: Yaesu MD-100  Antenna tuner: MFJ-949.
Linear Amplifier: Heathkit SB 200 (600 - 800 Watts PEP).

HF Antennas: Vertical, Comet CHA-250B.   Dipole, Alpha Delta DX-DD (80m / 40m),

VHF/UHF Base:  HYS-MAUV33   Microphone: Kenwood KMC-9    Antenna:  Diamond X30A
VHF/UHF Mobile:  HYS-MAUV33   Microphone:  HM-MAUV33    Antenna:  Comet SS-680SB

Note: The HYS-MAUV33 is identical to Yaesu FT-7900 except that it is capable of transmitting on all
frequencies 136MHz to 174MHz and 400MHz to 470MHz in addition to 2m and 70cm ham bands.
Also all Yeasu accessories work with this radio.

Iowa Hills Filter Software Free filter design software - Excellent - Check them out.
RLC Selector Software RLC Selector is a Windows 10 desktop tool designed to help engineers and experimenters select the best combination of part values for common passive and active filter circuits.
LTspice Simulation: Double Balanced Mixer LTspice simulation exercise.
[Last update: July 11, 2017]