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Shack Accessories - Audio

Click to enlargeA simple 2-tone-generator for testing the linearity of SSB transmitters by DK7IH
This device is as simple as useful. With 2 transistors and an oscilloscope it is fairly easy to test the linearity of your SSB transmitter. The 2-tone-method is a standarized test method that can be used to determine the maximum output and the amplification characteristics of a sideband transmitter.

Amplified Speaker for MP3 Player by KD1JV
This amplified speaker fits into an Altoids sized tin box, runs on three “AAA” batteries, weighs 3.4 oz (with batteries) and can produce room filling sound with remarkable fidelity when combined with an acoustic “bass enhancing” resonator (empty plastic peanut butter jar).

Click to enlargeMosfet headphone amplifier by PA2RF
Using only 12 components you can build your own 1-channel headphone amp. You can use it to connect it to the audio output of your CD- or MP3- player. Also it can be used as a final stage in your receiver designs.

The HZX Headphone Adapter by N1BYT
Looking for a pair of high-quality, high-impedance headphones for that crystal radio project? Build the HZX headphone adapter and use your Walkman-style headphones instead!

Click to enlargeWSPR VOX for the FT-817 by ZL4SAE
Having recently acquired an FT-817 I was interested in trying it in WSPR mode. It didn’t take much research to discover that the DATA connector on the rear panel has bi-directional audio, labelled as data. PTT is also available on the same connector. Unfortunately there is no VOX capability when using this port.

Click to enlargeZero-Beat Tuning Aid by N5ESE
Whether you're tone deaf, or just a geezer like myself, you might benefit with this handy little tuning aid. Connect it in parallel with your speaker or headphones. When you're ready to zero-beat the station calling CQ, press the pushbutton. ...

Creation date : 22/09/2007 @ 10:57
Last update : 07/12/2020 @ 18:41
Category : Shack Accessories
Page read 24889 times

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