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Single Sideband (SSB) Circuits
 

Last Updated: November 30, 2017 07:39 AM




Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

40/20 trap dipole -  Portable 40/20 trap dipole - Here's an easy to make trap dipole for 40 and 20 meters.  I made this for portable operations, mostly for "to the field" type QRP contests.  Being able to switch bands between 20 and 40 quickly and without re-adjusting an antenna tuner is a nice feature.  The only problem is it's a little heavy with the feed line and all, and putting it up in the raw New England woods can be daunting. __ Designed by Steven Weber, KD1JV

72 part contest rig -  This 30 meter rig with superhet receiver and xtal controlled transmitter won "Honorable mention" in the 2010 FDiM ACRI design contest.  Uses a LM386 audio amp as a combination product detector / audio amp. __ Designed by Steven "Melt Solder" Weber  KD1JV

75M SSB rig with PTT -  Nearly all the simple SSB rig designs you will find use relay or mechanical switches to go between receive and transmit.  Relays use extra power and take up a fair amount of space.  They can also be expensive.  Mechanical switches don't use power, but also take up a fair amount of space and often have to be located in inconvenient mechanical locations to minimize lead lengths.    __ Designed by Steven Weber, KD1JV

A Variable power supply with adjustable current limiting -  A Variable power supply with adjustable current limiting - new design!  0-14V output up to 5A current.   __ Designed by Steven Weber, KD1JV

ALT-Altoids L Tuner -  Altoids L Tuner (ALT) "L" tuner for half wave end feed antennas. __ Designed by Steven "Melt Solder" Weber  KD1JV

An 80 meter rig for the MAS contest by KD1JV -  Designed to be competative in the DL 80M "Mininum Art Session" contest, this rig features a crystal controlled 2W transmitter and a sensitive regenerative receiver, using 51 discrete parts on a 3.5" x 2.5" circuit board.   __ Designed by Steven Weber, KD1JV

CW SPKR -  600 Hz Resonant speaker.  Folded channel box design.  Makes an amazing difference!  __ Designed by Steven Weber, KD1JV

Fairly Simple Circuit 75M SSB rig with PTT -  Nearly all the simple SSB rig designs you will find use relay or mechanical switches to go between receive and transmit.  Relays use extra power and take up a fair amount of space.  They can also be expensive.  Mechanical switches don't use power, but also take up a fair amount of space and often have to be located in inconvenient mechanical locations to minimize lead lengths.  They also make the rig harder to use.  The solution is to use electronic switching.  Often this is done with diodes or bi-directional amplifiers.  Both of these approaches can get complicated.  The approach used here is to use a 74HC5053 analog switch and it works well.  Two sections of the analog SPDT switch are used to toggle the crystal filter between the inputs and outputs of SA612 mixers.  The third section switches a by pass cap between the inputs of the mixers, depending in which direction their being used for.   __ Designed by Steven Weber, KD1JV

LED battery voltage Monitor -  A fuel gage for your gel cell battery.   __ Designed by Steven Weber, KD1JV

MMR-40 40 meter rig with SSB (voice) & CW (Morse code) operating Modes. -  A 40 meter CW/SSB transceiver using less than $50.00 in parts.  How to build "dead bug" style.   __ Designed by Steven Weber, KD1JV

PSK Transceiver, version 2 -  Unique non-SSB transmitter design - kinda works.   __ Designed by Steven Weber, KD1JV

SSB1 -  (Fairly) Simple 75M SSB rig  __ Designed by Steven Weber, KD1JV

SWRX -  Short Wave AM Broadcast Receiver.  Simple, inexpensive and effective.   __ Designed by Steven Weber, KD1JV

The ADC-40 -  All Discrete Components 40 M transceiver with super-het receiver using no IC 's, just a whole bunch of transistors of various flavors (NPN, PNP, J-FET, MOSFET)  __ Designed by Steven Weber, KD1JV

The Tenna Dipper -  Poor mans antenna analyzer, shows resonance of antennas, 80-10 M operation.   __ Designed by Steven Weber, KD1JV

Using an AVR -  LED headlamp projects: Tiny13V microcontroller as step up (boost) or step down (buck) voltage converter for driving a white or high power LED. (pdf file) Design equations and source code included.   __ Designed by Steven Weber, KD1JV

Variable Power Supply with adjustable current limiting -  A Variable power supply with adjustable current limiting - new design!  0-14V output up to 5A current.   __ Designed by Steven Weber, KD1JV

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Single Sideband (SSB) Circuits


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