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70Mc-s Low Pass Filter


The filter published there is working without problem and needs no or very little tuning
post 21 Feb 2024
70Mc-s Low Pass Filter

RF Filter Links

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Band-Pass Filters for HF Transceivers
from intrastation interference these handy and inexpensive filters can help

Clean Up Your Signals with Band-Pass Filters
design of band-pass filters that provide a level of selectivity and reliability heretofore unavailable

Clean Up Your Signals with Band-Pass Filters
a series of band-pass filters BPFs between 150 W transceivers and 1500 W amplifiers

Crystal band pass filters for QRSS applications
a good RX band pass filter will be an important feature of any future design

Coaxial Stub Filters
You should not need to use a narrowband filter after a transmitter


Noise suppression with X-phase II

Noise suppression with X-phase II This device similar devices are known as QRM eliminators or noise killers, makes it possible

The K9AY loop antenna for 160 and 80m bands

The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna

Microphone boom headset for the FT-897

Microphone boom headset for the FT-897 Boom length m. 5.24-fiberglass spreaders m. 2.95-loops dimensions m. 2.00 x 4.27 with 5.00 m