Ramsey Electronics FT146 Manuál s instrukcemi

FT146 • 1 2 METER FM 5 WATT TRANSMITTER KIT Ramsey Electronics Model No. FT146 • Direct, true FM for excellent voice and data quality.

FT146 • 10 ❒ 21. Install R15, 10K ohm (brown-black-orange). ❒ 22. Install C33, .001 uf disc capacitor (marked .001, 1 nf or 102). ❒ 23. Install R16,

FT146 • 11 ❒ 41. Install R7, 470 ohm (yellow-violet-brown). ❒ 42. Identify Q1, a 2N3904 NPN transistor (marked 2N3904). Install Q1, observing correc

FT146 • 12 ❒ 60. Install C21, 4.7 or 5 pf disc capacitor (marked 4.7 or 5 or 4.7K or 5K). ❒ 61. Install L9, slug tuned shielded coil (marked 007007

FT146 • 13 stages of your transmitter. We recommend that you get them ready for installation before assembling the Driver and Final stages. If you pre

FT146 • 14

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FT146 • 16 The "legs" or leads for inserting L2, L7, L3 and L4 should be about " long. These coils should sit about 1/8" maximum a

FT146 • 17 ❒ 97. Install D4, 1N4148 style signal diode (glass body with black band). Observe correct orientation of the banded end. ❒ 98. Install TP

FT146 • 18 ❒ 112. Install C2, 100 to 220 uf electrolytic capacitor. Be sure to observe polarity - especially with this part since it is directly acros

FT146 • 19 coil drastically whenever it is inserted into the coil. You may use a metal hex key if you are aware of this effect and are willing to rem

FT146 • 2 RAMSEY TRANSMITTER KITS • FM10, FM-25 FM Stereo Transmitters • TV6 Television Transmitter • Cube TV Transmitters

FT146 • 20 ❒ 8. Move your meter probe over to TP2, key the transmitter and adjust L5 and L11 for maximum negative reading. Once again, go back and

FT146 • 21 transmitter keying in a receiver is of some help, but even the simplest crystal oscillator can send a fine signal into your neighbor's

FT146 • 22 Amateur radio magazines and handbooks provide a variety of circuits for RF wattmeters and relative field-strength indicators, including met

FT146 • 23 "hum-m-m-, that's not a .001 uf where a 100 pf should be is it?" If there is a problem in getting the modulation working, a

FT146 • 24 Here's a handy reference chart for the 5 pin DIN jack PIN # FUNCTION

FT146 • 25 NOTE ON REPLACEMENT PARTS: If you lose or damage parts during assembly or testing, you may, of course, order any needed replacement parts

FT146 • 26 FT146 PARTS LAYOUT DIAGRAM

FT146 • 27 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting

FT146 • 28 FT146 2 Meter FM Transmitter Kit Quick Reference Page Guide Introduction to the FT146 ... 4 Circuit Description ...

FT146 • 3 FT146 FM RECEIVER KIT Ramsey Publication No. MFT146 Price $5.00 TABLE OF CONTENTS Introduction to the FT146 ... 4 Circuit Des

FT146 • 4 INTRODUCTION Two meter FM has been around for years, but never with the popularity that is enjoyed today. In the old days, hams snooped aro

FT146 • 5 and IC chip) give the equivalent of about 130 or more transistors and diodes. And, in addition to 13 inductors, a crystal and the various pl

FT146 • 6 into transmit. There is no need to control the voltage to any other transistors since they all operate class "C". A class C amplif

FT146 • 7 Inductors and ferrite cores: ❒ 2 Shielded can tunable inductor (marked 007007) [L9,13] ❒ 2 Tunable inductor (pink plastic body) [L5

FT146 • 8 RAMSEY Learn-As-You-Build KIT ASSEMBLY: There are over 200 solder connections on the FT146 printed circuit board. That means your work co

FT146 • 9 ❒ 3. Install J2, the subminiature phone jack. Solder all three points. Be gentle and patient in inserting, so as not to damage the solde