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SS70A 

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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 $25.00, 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 $50.00 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 SS70A

Страница 1: ...ar to SSB Decodes most cordless phones and basic 2 Way radio systems Loud amplified speaker output no need for an external amp Super clean low noise audio excellent audio quality Accepts mike line or...

Страница 2: ...nce Meter RAMSEY AMATEUR RADIO KITS DDF1 Doppler Direction Finder HR Series HF All Mode Receivers QRP Series HF CW Transmitters CW7 CW Keyer CPO3 Code Practice Oscillator QRP Power Amplifiers RAMSEY M...

Страница 3: ...5 Parts List 7 Schematic Diagram 8 SS70A Assembly instructions 9 Testing the SS70A 12 Hook up Configurations 13 Troubleshooting 16 Parts Layout Diagram 18 Ramsey Kit Warranty 19 KIT ASSEMBLY AND INST...

Страница 4: ...used in the SS70A is adequate to minimize casual eavesdropping or ambulance chasing Greater security is possible using precision audio filters and by inverting more than one audio range simultaneously...

Страница 5: ...ed audio The inverted audio is then amplified by either Q1 or Q2 depending on the path On the RX path J4 jumper position selects either speaker level audio from the LM 380 2 watt audio amplifier or li...

Страница 6: ...in physical relationship to each other so there s minimal chance of inserting wires into wrong holes Second whenever possible we install in an order that fits our Learn As You Build Kit building phil...

Страница 7: ...apacitors marked 100 or 101 C2 11 1 01 uF disc capacitor marked 01 or 103 or 10nF C14 3 1 uF disc capacitors marked 1 or 104 C3 13 16 5 10 uF electrolytic capacitors C1 5 9 12 18 1 100 to 220 uF elect...

Страница 8: ...SS70A 8...

Страница 9: ...te traces to the top side of the board and over obstacles other traces You will notice that jumpers are normally not found on the schematic but are necessary for proper circuit operation 11 Install C3...

Страница 10: ...f the chip is marked with a notch dot or band Check the parts diagram for correct placement Before soldering ensure all pins have made it through the board It s not much fun removing a chip because on...

Страница 11: ...rugged and can handle the heat that any pen type soldering iron can deliver 38 Install C1 10 uF electrolytic Be sure to orient the part correctly 39 Install C9 10 uF electrolytic observe polarity 40...

Страница 12: ...s connected to power input jack J5 center pin is positive Current requirements are typically 250 500mA which means a decent battery set C or D cells or good quality power supply may be used If you re...

Страница 13: ...two way operation where we wish to scramble our outgoing or transmitter audio The RX path through the SS70A is used for receiving and unscrambling the scrambled audio If you are simply using the SS70A...

Страница 14: ...and RX paths We ll scramble the audio through the TX path and send it on to the recorder s input to be recorded We ll use the SS70A s RX path to take the recorder s playback audio and unscramble Once...

Страница 15: ...udio through the SS70A RX path Due to the large number of types of keying circuits it is best to contact the transceiver manufacturer concerning proper installation of this scrambler in line with your...

Страница 16: ...pe can be used to trace the audio signals through the forward and reverse paths of the circuit Loop the audio through the SS 70A having it scramble and unscramble compare to see where a problem lies I...

Страница 17: ...pose our manual in the easiest most user friendly format that is possible As our customers we value your opinions comments and additions that you would like to see in future publications Please submit...

Страница 18: ...SS70A 18 SS70A PARTS LAYOUT DIAGRAM...

Страница 19: ...h 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...

Страница 20: ...H INVERSION KIT RAMSEY ELECTRONICS INC 590 Fishers Station Drive Victor New York 14564 Phone 585 924 4560 Fax 585 924 4555 www ramseykits com REQUIRED TOOLS Soldering Iron Ramsey WLC100 Thin Rosin Cor...

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