WA7MLH OSHPark Shared RF Modules
Single stage broadband feedback amp
TO-92 & TO-39 case styles
It also has separate base bias control.
Separate bias control is very useful for TX biasing in PA driver stages.
MOD_BB_AMP1 OSHPark Link
Modular two stage broadband feedback amp
2 parallel MPS_H10 NPNs (fT=600 MHz)
Emitters have isolated DC bias for balanced power dissipation.
Devices are in parallel at RF so that Rfb & Re still work as though it is a single stage.
MOD_BB_AMP_H10 OSHPark Link
Modular LM386 Audio Amp
This one is good for medium volume speaker audio.
Modular LM386 OSHPark Link
Modular Double Balanced Diode Ring Mixer
This uses dual Schottky diodes in SOT-23 SMD package.
SMD Schottky package offers about 1dB better conersion loss than leaded Schottky diodes
I have no idea why.
Modular Diode Ring Mixer OSHPark Link
WA7MLH OSHPark Share2