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   SR-1

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The Ramsey Kit Warranty 

 

Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved 
without contacting the factory.

 

 
Notice that this is not a "fine print" warranty. We want you to understand your rights and ours too! All 
Ramsey kits will work if assembled properly. The very fact that your kit includes this new manual is 
your assurance that a team of knowledgeable people have field-tested several "copies" of this kit 
straight from the Ramsey Inventory. If you need help, please read through your manual carefully, all 
information required to properly build and test your kit is contained within the pages! 
 

1. DEFECTIVE PARTS:

 It's always easy to blame a part for a problem in your kit, Before you conclude 

that a part may be bad, thoroughly check your work. Today's semiconductors and passive components 
have reached incredibly high reliability levels, and it’s sad to say that our human construction skills 
have not! But on rare occasions a sour component can slip through. All our kit parts carry the Ramsey 
Electronics Warranty that they are free from defects for a full ninety (90) days from the date of 
purchase. Defective parts will be replaced promptly at our expense. If you suspect any part to be 
defective, please mail it to our factory for testing and replacement. Please send only the defective part
(s), not the entire kit. The part(s) MUST be returned to us in suitable condition for testing. Please be 
aware that testing can usually determine if the part was truly defective or damaged by assembly or 
usage. Don't be afraid of telling us that you 'blew-it', we're all human and in most cases, replacement 
parts are very reasonably priced. 
 

2. MISSING PARTS:

 Before assuming a part value is incorrect, check the parts listing carefully to see 

if it is a critical value such as a specific coil or IC, or whether a RANGE of values is suitable (such as 
"100 to 500 uF"). Often times, common sense will solve a mysterious missing part problem. If you're 
missing five 10K ohm resistors and received five extra 1K resistors, you can pretty much be assured 
that the '1K ohm' resistors are actually the 'missing' 10 K parts ("Hum-m-m, I guess the 'red' band really 
does look orange!")  Ramsey Electronics project kits are packed with pride in the USA. If you believe 
we packed an incorrect part or omitted a part clearly indicated in your assembly manual as supplied 
with the basic kit by Ramsey, please write or call us with information on the part you need and proof of 
kit purchase 
 

3. FACTORY REPAIR OF ASSEMBLED KITS:

  

To qualify for Ramsey Electronics factory repair, kits MUST: 
1. NOT be assembled with acid core solder or flux. 
2. NOT be modified in any manner. 
3. BE returned in fully-assembled form, not partially assembled. 
4. BE accompanied by the proper repair fee. No repair will be undertaken until we have received the 

MINIMUM repair fee (1/2 hour labor) of $18.00, or authorization to charge it to your credit card 
account. 

5. INCLUDE a description of the problem and legible return address. DO NOT send a separate letter; 

include all correspondence with the unit. Please do not include your own hardware such as 
    non-Ramsey cabinets, knobs, cables, external battery packs and the like. Ramsey 
Electronics, Inc., reserves the right to refuse repair on ANY item in which we find excessive 
problems or damage due to construction  methods. To assist customers in such situations, 
Ramsey Electronics, Inc., reserves the right to solve their needs on a case-by-case basis. 

 
The repair is $36.00 per hour, regardless of the cost of the kit. Please understand that our technicians 
are not volunteers and that set-up, testing, diagnosis, repair and repacking and paperwork can take 
nearly an hour of paid employee time on even a simple kit. Of course, if we find that a part was 
defective in manufacture, there will be no charge to repair your kit (But please realize that our 
technicians know the difference between a defective part and parts burned out or damaged through 
improper use or assembly). 
 

4. REFUNDS:

 You are given ten (10) days to examine our products. If you are not satisfied, you may 

return your unassembled kit with all the parts and instructions and proof of purchase to the factory for a 
full refund. The return package should be packed securely. Insurance is recommended. Please do not 
cause needless delays, read all information carefully. 

Содержание SR-1

Страница 1: ...Ideal scout school or club project Clear concise step by step instructions carefully guide you to a finished kit that not only works but you ll also learn too Runs on a standard 9 volt battery Add our...

Страница 2: ...s HR Series HF All Mode Receivers QRP Series HF CW Transmitters CW 7 CW Keyer PA Series VHF and UHF Power Amplifiers Packet Computer Interfaces QRP Power Amplifiers RAMSEY MINI KITS Many other kits ar...

Страница 3: ...an Expect to Hear 4 Shortwave Listening as a Hobby 5 Circuit Description 6 Parts Layout Diagram 7 Parts List 8 Assembly Instructions 9 Schematic Diagram 12 Shortwave Antenna Ideas 15 Initial Testing a...

Страница 4: ...ons due to the lack of superheterodyne design For example our popular Ramsey direct conversion receivers for the 80 40 30 and 20 Meter Amateur bands will also pick up AM broadcast stations but you ll...

Страница 5: ...ou tune through several different ham radio bands the signals are not likely to be intelligible Reception of CW and SSB signals on an AM receiver requires a BFO This is not a complicated feature but i...

Страница 6: ...rmits a tuning range of over 2 5 Mhz by R2 The mixer output is applied to the 260 Khz bandpass IF transformer and amplified by Q2 and Q3 The AM audio is detected by D2 and preamplified by U2 A before...

Страница 7: ...SR 1 7 SR 1 PARTS LAYOUT DIAGRAM...

Страница 8: ...R10 R11 3 47K ohm yellow violet orange R7 R8 R15 2 100K ohm brown black yellow R12 R13 1 1M ohm brown black green R14 SEMICONDUCTORS 1 1N270 diode glass bead style D2 1 Varactor diode transistor style...

Страница 9: ...stood and completed Some of the components require modification Examine the schematic circuit diagram and PC Board parts layout diagram as you proceed Use good soldering techniques Let your soldering...

Страница 10: ...round The antenna signal coupled through C1 level controlled by R1 peaked by L1 is now fed to input pins 1 and 2 of the NE602 Pin 3 of the NE602 is now connected to ground as required 9 Install C16 a...

Страница 11: ...owing from the antenna to C7 you already have built a direct conversion shortwave receiver capable of CW SSB reception throughout the SR 1 s tuning range If you want to prove it to yourself connect an...

Страница 12: ...1K brown black red 34 Install C10 01 F marked 01 103 or 10nF 35 Install R8 47K yellow purple orange 36 Install R9 1K brown black red 37 Install C12 01 F marked 01 103 or 10nF 38 Referring to Step 29...

Страница 13: ...F may be installed and black leads are inserted correctly 60 Install the battery clamp Position battery and holder so as not to cover nearby PC board mounting holes Use the method for securing the cl...

Страница 14: ...antenna is necessary simply make it as long as possible and as high up from concrete floors as you can 5 When installing any outdoor antenna BE VERY CAREFUL not to let your antenna wire come in contac...

Страница 15: ...down from its highest position The Tuning Control covers any 2 5 Mhz segment selected by adjustment of oscillator coil L2 Both L1 and L2 must be adjusted with a non metallic alignment tool such as is...

Страница 16: ...tolerances of the capacitors and coils involved Also notice how the amount of frequency change per turn increases with each turn However we can see that a setting of somewhere between 4 and 5 turns mi...

Страница 17: ...most reception quite satisfactory with the RF gain at its midpoint or so PROBLEM Local AM radio station audible throughout tuning range SOLUTION Whether this will even happen depends on how close you...

Страница 18: ...ter we are happy to give you a couple of additional suggestions and our reasons for them If your first goal is economy and rugged portability you will find that the circuit board can be mounted nicely...

Страница 19: ...u use your own enclosure and knobs you will probably plan some sort of dial markings If you finish your receiver with the Ramsey custom case and knob kit you may wish to copy one of the following desi...

Страница 20: ...SR 1 20 Notes...

Страница 21: ...be assured that the 1K ohm resistors are actually the missing 10 K parts Hum m m I guess the red band really does look orange Ramsey Electronics project kits are packed with pride in the USA If you b...

Страница 22: ...ial Information 20 Ramsey Kit Warranty 23 Manual Price Only 5 00 Ramsey Publication No MSR 1 Assembly and Instruction manual for RAMSEY MODEL NO SR 1 SHORTWAVE RADIO KIT Printed on Recycled Paper REQU...

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