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ΚΑΤΑΣΚΕΥΗ RF MRF101AN 100WATT 88- 108 MHZ

TO ΣΧΕΔΙΟ ΚΑΙ ΤΑ ΥΛΙΚΑ ΤΟΥ

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KAΤΑΣΚΕΥΗ PLL FM Single chip stereo FM transmitter

Single chip stereo FM transmitter

Some data:

Stereo or mono operation.

Audio muting.

Power output 0.2mW = -7 dBm = 100dBµV @ 50ohm

87.5 - 108.0 MHz, in 100kHz steps.

Setting up frequency & stereo/mono:

Press SET button to enter setup mode.

- An arrow points to the frequency -

- Press UP or DOWN to alter frequency -

Press SET again.

- An arrow points to stereo or mono -

- Press UP for stereo or DOWN for mono -

Press SET again.....Ready

Press MUTE for temporary audio muting

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ΚΑΤΑΣΚΕΥΗ ΕΝΙΣΧΥΤΗ FM 28 WATT ME TO TR 2SC1946

OI ΠΛΑΚΕΤΕΣ ΤΟΥ ΚΑΙ ΤΑ ΥΛΙΚΑ ΤΟΥ

VOLTAGE 13.8V - 15V

The layout of the 2SC1946 28 Watts FM broadcast RF amplifier has been created with sPRINT Layout v3.0. You can get a Shareware copy at: http://www.abacom.de. The pcb outline is 100 x 50 mm (width x height).

RF Amplifier Parts List
All component values are drawn on the .comp and .silklayer bitmaps, with the following exception(s);
all four (4) coils (in the lowpass filter section) are: 3.5 turns, 8 mm DIA., 1.2 mm CuL closewound i.e. no wirespacing.

CuL = magnetwire, enameled copper wire, insulated (rigid) copper wire e.t.c..
2 mm equals approx. to #12 A.W.G
1 mm equals approx. to #18 A.W.G
1.2 mm equals approx. to #17 A.W.G
0.8 mm equals approx. to #20 A.W.G
0.3 mm equals approx. to #28 A.W.G.)

All diameters are measured from the inside of the coils, i.e. ‘internal’ diameter.
Make sure to mount the rf-transistor on a appropriate heatsink and use some thermal heatsink compound between the flange of the transistor and heatsink! (Thermal resistance heatsink at least 6°C/W.)