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AK2F/WN2A Beacon

On 28.2082 MHz Running ~ 4 Watts into a A-99 Vertical From Budd Lake, NJ, USA FN20. On Air Since April 1997.
Same 10 Meter MOSFET Transmitter
Status: UNDER MAINTENANCE--BEACON MAY BE TEMPORARILY OFF-AIR.  Any Reports?? See link below.

HBR-3 HomeBrew HF Amateur Band Receiver Revision 12
Straightforward Analog/RF Design-Using available parts.
Stable Franklin VFO + Sallen-Key Audio Filter for CW, with PCB option + New Dial+
A new internal speaker amp to power external speaker= Good Sounding!
Updated: 1 March 2025

Homebrew CW Transmitters-MOuSeFETS
The originals still work, >40 years of use! Download the pdf with all the current revisions.
Now at Version 12... Franklin VFO Stability and More Improvements. Better Documentation.
Added PCB Gerber Files for each PCB.  Updated: October 2026.

Charger For 12 volt SLA Batteries
A simple "triple-mode" charger for sealed lead-acid batteries.

Dual-Band Power Amplifier
For 146 and 440 MHz Amateur use. Works in-line with your HT rig. Auto Band-Switching. Uses LDMOS Transistors for good gain, great VSWR tolerance and more. No relays, uses PIN diodes!
Note: Not a beginner's project-- for the RF experienced type.

A PIC16F628A BASED FREQUENCY COUNTER
A Sensitive Low-Cost Frequency Counter with 500 MHz capability. Very Inexpensive Parts List.
The Source Code is available under GNU GPL3.

YALP: Yet Another Link Page

Contact Info:  e-mail