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TXE433 

 11  

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 man-
ual 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 con-

clude 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 con-
struction 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 sus-
pect 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 de-
fective 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 prob-
lem. 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 infor-
mation 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 leg ble 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. Ram-
sey Electronics, Inc., reserves the right to refuse repair on ANY item in which we find ex-
cessive 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 techni-
cians 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 dam-
aged 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 recom-
mended. Please do not cause needless delays, read all information carefully. 

 

Summary of Contents for TXE433

Page 1: ...rms door openers home security you name it Powerful 10 dBm output up to 600 range SAW Resonators for high stability no drift Compact size with low current demand 433 MHz license free band Automatic tu...

Page 2: ...rs QRP Series HF CW Transmitters CW700 Micro Memory CW Keyer PA Series VHF and UHF Power Amplifiers Packet Computer Interfaces QRP Power Amplifiers RAMSEY MINI KITS Many other kits are available for h...

Page 3: ...duction 4 How Encoders and Decoders Work 4 Schematic Diagram 6 Antenna Considerations 8 Hook up diagram 9 Conclusion 10 Warranty 11 WIRELESS RF LINK TRANSMITTER MODULE INSTRUCTION MANUAL FOR Ramsey Pu...

Page 4: ...oise that must be filtered for proper data reception Rather than use microprocessors to detect and correct errors an encoder IC and corresponding decoder IC can be used on the transmitter and receiver...

Page 5: ...s all use the same frequency you would run into interference if you tried to use more than one transmitter at the same time We ve all had this experience when travelling you re tuning the radio and ha...

Page 6: ...TXE433 6...

Page 7: ...TXE433 7...

Page 8: ...ill depend on terrain obstructions and height of antenna Buildings can reflect RF energy making it difficult or impossible to receive the desired signal Also if a reflected signal is bounced off of a...

Page 9: ...mit enable pin to send data to the receiver A0 through A7 A0 through A7 These are the address lines Individual ad dress lines should be connected to 5 volts or ground to match the RXD433 transmitter a...

Page 10: ...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 comments or ideas...

Page 11: ...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...

Page 12: ...TXE433 12 Price 5 00 Ramsey Publication No MTXE433 Assembly and Instruction manual for RAMSEY MODEL NO TXE433...

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