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NE QRP Switched Capacitive Audio Filter Video
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NE QRP Switched Capacitive Audio Filter Video
NEscaf filter, a demonstration
The Nescaf Audio Filter for Small QRP Radios.
NEScaf test on 40m
NeQRP Nescaf
Ham Radio - Teardown of an old MFJ-721 audio filter from 1978
SCAF Audio Filter
#5 Valve QRP - Building a Paraset
Review of the QRP Guys UnUnTenna Plus
Best Ham Radio Headset? Heil BM-17 Dual Side Boomset Review #HamradioQA
Modified pixie QRP transceiver SSB reception listening to TM91WARD
Ham Radio - The Alex Mic Review with the KX3 - QRP
Simple DC RX with CW Audio Filter and DDS VFO
Got a Pixie in the mail today, My new QRP radio
A Homebrew Active CW Filter
Can we help Curt? VFO Level NC40A vs. NC40B
Output Power vs. S-Units
SP-2B2C: Dual-band 2 channel QRP CW rig/ Part 1 Concept
Elecraft AF-1 Audio Filter for Ham Radio
KD8BBK SCAF FILTER PART 2
Modifying QRP circuits to operate on another band: Part 2
YT2VP Home made CW filter
Elecraft AF1 Active Audio Filter Clone Homebrew Project
KD8BBK BUILDING SCAF FILTER PART 1
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