Ramsey Electronics QRP-80 Manual de instrucciones

HR-80• 1 80 METER (3.0 MHZ) ALL MODE RECEIVER KIT Ramsey Electronics Model No. HR-80 • Add our case and knob set for a finished ‘Pro’ look.

HR-80• 10 RECEIVER ASSEMBLY:  1) Install the RCA antenna jack, J1. Solder all four points.  2) Install C5, a .01µF ceramic disc signal coupling ca

HR-80• 11 positive lead into the ‘+’ marked hole on the PC board.  10) Install C11, a 100-220µF electrolytic capacitor. Remember to observe correct

HR-80• 12  22) Install the 9-volt battery snap connector, making sure that the red (+) and black (-) leads are correctly installed.  23) Install C7

HR-80• 13 INITIAL TESTING OF YOUR HR-80: You’re now ready to power up and test your HR-80, but before you begin take some time to sweep off your benc

HR-80• 14 hear a few whistles as you tune, the NE602 oscillator is working just fine.  These simple initial checks verify that your receiver is oper

HR-80• 15 and L2 to get the exact tuning range you want. ALIGNMENT HINT FOR ALL DIRECT CONVERSION RECEIVERS: You will clearly hear the oscillator of

HR-80• 16 which you are listening. Therefore, when adjusting the frequency of your companion Ramsey QRP transmitter, be certain that you have in fact

HR-80• 17 replacement. Remember the NE602 circuits similar to Ramseys generally call for sets of C or D cell batteries! For Experienced Builders mor

HR-80• 18 you receiver on for a few days, just like we leave our computers and Ham gear on all the time? (2) We thought you’d have more fun planning

HR-80• 19 A careful check of all construction WILL solve your problem. Over 95% of the kits returned for repair have nothing more than a simple assem

HR-80• 2 RAMSEY TRANSMITTER KITS • FM-10 FM Stereo Transmitter • FM-1,2,3,4 FM Wireless Microphones • PB-1 Telephone Transmi

HR-80• 20 BANDSPREAD AND TUNING RANGE: The easiest way to enjoy finer tuning , if you plan to use your receiver only for checking your favorite segme

HR-80• 21 value of C4. This will cause the varactor diode to have greater effect on the tuning. Try values of 33pF up to 100pF. FREQUENCY STABILITY:

HR-80• 22 method is to wire a high-impedance counter probe line directly to pin 7 of the NE602, terminated to a rear panel frequency counter connecti

HR-80• 23 modification will achieve any particular ideal signal-to-noise ratio or audio frequency response, but is does significantly boost the outpu

HR-80• 24 CONSTRUCTION NOTES:

HR-80• 25 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting

HR-80• 26 3. FACTORY REPAIR OF ASSEMBLED KITS: To qualify for Ramsey Electronics factory repair, kits MUST: 1. NOT be assembled with acid core s

HR-80• 27 HR-80 AMATEUR RECEIVER KIT Quick Reference Page Guide Introduction to the HR-80 ...4 Circuit description ...

HR-80• 3 HR-80 AMATEUR RECEIVER KIT Ramsey Publication No. MHR-80 Price $5.00 TABLE OF CONTENTS Introduction to the HR-80 ... 4 About Di

HR-80• 4 INTRODUCTION: Our HR-40 and HR-80 models are thought of as “best for beginners” because Hams with a Novice or Technician license can operat

HR-80• 5 Therefore, we are pleased to assure you that your manual for the HR-80 receiver and the receiver circuit itself have been designed with an u

HR-80• 6 Advantages of any Direct Conversion receiver include: • It is simple, and therefore economical and easy to build • It is quite sensitive eve

HR-80• 7 PARTS SUPPLIED WITH THE HR-30 KIT: CAPACITORS:  2 150pF disc capacitor [marked 150 or 151] (C1,C2)  5 .01µF disc capacitor [marke

HR-80• 8 "LEARN-AS-YOU-BUILD" ASSEMBLY STRATEGY: To help you learn just what exactly is going on we'll discuss the purpose of most

HR-80• 9 Parts Layout: