Are you baffled by your antenna tuner or "transmatch"? The is easy to build and super-easy to use. No "R-X" controls, calibration or calculations needed. Just connect it between your rig and antenna tuner, set receiver to desired operating frequency, and adjust the antenna tuner until the distinctive modulated pulses NOT just straight "noise"! T-KIT No.
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Are you baffled by your antenna tuner or "transmatch"? The is easy to build and super-easy to use. No "R-X" controls, calibration or calculations needed. Just connect it between your rig and antenna tuner, set receiver to desired operating frequency, and adjust the antenna tuner until the distinctive modulated pulses NOT just straight "noise"!
T-KIT No. Tune it to any quiet part of the MHz FM band per FCC Part 15 rules, noticing its distinctive "beep-beep" modulation, and let the kids use their own FM portable radios to discover the basics of direction-finding. Hide it indoors on rainy days! Includes board-mounted on-off switch and 9V battery snap. Use several to demonstrate triangulation.
Budget Electronic Keyer A classic circuit and a nice price make this a great project for beginners or for building into extra rigs. Includes speed control, weight control rarely offered in "simple" CMOS circuits and sidetone pitch control. A lot of keyer for the price, it features self-completing dits and dahs for standard single-lever keyer paddles. While not designed for iambic operation, the price and reliability make the a very nice introduction to electronic CW keying.
If you want to enjoy casual CW-SSB reception, this varactor-tuned KHz oscillator may be built into larger receivers or else mounted in its own case and placed near your portable SWL radio.
Operates on 6 to 15 VDC. In fact, this great little receiver beats the pants off those 3-tube radios with the big plug-in coils. Excellent for clubs, classes and family activities. The sharp-looking front panel gives the "real radio" look right away: dress up your project later with a case and knobs, and perhaps a speaker.
Features convenient push- button bandswitching, on-off switch, "on" LED, tuning, volume, regeneration control.
It has better audio and filtering than the others, and we supply the parts and instructions to let you build it for or change it to ANY band of your choice. Many hams KNOW that there are only minor coil and capacitor differences in the simple RF input and oscillator sections of a basic direct-conversion receiver.
We give you ALL parts needed to build for your choice of , 80, 75, 40, 30, 20, 17, 15, 12 or 10 meters! Try out your own multi-band switching ideas.
Semi-conducteur: TDA2611 (TDA 2611) - 5W AUDIO AMPLIFICATEUR DE PUISSANCE...
Nem Amplifier Philips Tdqa Datasheet 2 x 22 w stereo btl differential amplifier with tdaa protection and dynamic distortion detector 10 pages. Look Up Results on Gopher. Apply a low voltage soldering iron tdaa than 24 V to the. Amplifier — Wikipedia en. Valve amplifier — Wikipedia en. Enter text from picture: File under Integrated Circuits, IC Philips customers using or selling these products tdaa.
TDA2611 Philips Semiconductors, TDA2611 Datasheet
TDA2611A - Schematic audio amplifier