CZECH AMATEUR RADIO STATION





Last update 21-7-2003. Copyright OK1RP & OK1-35506.

Camper 1     fully modular architecture and Highest Performance CW tcvr for HF CW with No compromise from CONTIWA …


CONTIWA

Camper 1

160-10M High Performance and No Compromise CW Transceiver with fully modular architecture.

 Project Product Description ( updated Jul 2003)


Easy to Build:

  • Controls and connectors mounted directly to boxed and shielded modules.
  • User manual with step by step instructions.
  • Incremental assembly and test.
  • Totaly modular, flexible and upgradeable architecture with replaceable shielded boxes. Easy to expand to another bands, upgrade the filters, VFO, or build-in an options etc. Camper 1 tcvr will grow easily as Your baby!
  • No surface mount devices.

Camper 1  Highest Performance and No Compromise CW Base Unit

 

General Features:

  • Efficient 10-16 volt operation for home or field usability.
  • Low receive current (no back light, pre-amp off, headphones).
  • Full break-in CW - Diode T/R switching.
  • 5W output power for full QRP standards operation (up to 20W output optionaly available).
  • Rugged boxes can be customize enclosured.
  • Single band is available in basic version (upgradeable to 160-10 meter ham bands modules).
  • Superior stable and clear VFO, no spurious. (temperature compensated optionaly)
  • 100kHz tunable VFO in basic version with clasic rotable capacitor (10 turns pot with varactor or PLL synthesized for low noise ... no DDS spurs. optionaly available.)
  • Telegraphy frequency counter, accurate to within 1kHz, manual or auto modes – internaly selectable.
  • CW only with no compromise performance in this mode.
  • Center detent RIT and XIT control with approx. +/-2kHz range (user adjustable).
  • Fully SWR protected – will not be damaged when short or open circuit loaded.
  • Relative to main carrier at 5W output, all harmonics * dB or better, all spurious * dB or better.
  • Ready for use with headphones (speaker optionaly).
  • Headphone jack handles mono and stereo plugs
  • BNC antenna connector -- A QRP standard. (SO-239 on High Power as an option).
  • Room for additional connectors on the front/rear panel for user modifications.
  • All options may be added at any time.

 confidential cause of under development and construction. Will be shared when testing will be done.

Receiver:

  • Double-balanced high level diode IF mixer (+23dBm) for excellent front end dynamic range and IP3.
  • Exclusive RX/TX front-end filtering in special „Triplet“ design (LPF+HPF+BPF) arranged for each Ham Band, relay switched (for excellent IP2 on RX).

 

Camper 1 Performance Measurements (14MHz Typical Values)

MDS(dbm)

IMDDR3(db)

Ip3(dbm)

Ip2(dbm)

BDR(db)

*

*

    *

     *

*

  * confidential cause of under development and construction. Will be shared when testing will be done.

 

  • RX low noise quad JFETs pre-amp and attenuator. (Both switchable on/off).
  • Single conversion superheterodyne RX designed as a down convertor to low 8MHz (2MHz) IF or as a up convertor to high 36MHz IF.(upgradeable)
  • Smooth, Fast attack, IF-derived AGC (no 'popping' on strong signals) with fast/slow delay. (AGC can be turned off also). 
  • Really sharp IF 8x crystal + 6x crystal filtering with superior stopband rejection helps prevents receiver overload from signals outside the RX passband which can be upgraded up to 16x crystal + 8 crystal filtering optionaly! (Much better adjacent signal rejection (without AGC pumping) than the switched capacitor audio only filtering of other rigs.)
  • Clasic capacitor or 10 turns pot or PLL synth. VFO controled 
  • AGC with more than * dB range.
  • Low noise audio circuits in final stages. (no LM386 etc.)

 

* confidential cause of under development and construction. Will be shared when testing will be done.

 

CW Features:

  • Full break-in (QSK) CW - Diode T/R switching.
  • Built in keyer with programmable memories and both popular iambic modes A and B (optionaly).
  • Sharp bandwidth 300Hz CW crystal filter with more than * dB stop band rejection typicaly! 
  • Optionaly fixed-bandwidth narrow crystal filtesr or a wide-bandwidth crystal filters (up to 16+8 crystals) for tuning the band.

 * confidential cause of under development and construction. Will be shared when testing will be done.

 

Would You like to have the legendary radio like Harley & Davidson is in the motorcycles world ? … then wait for

Camper 1 from CONTIWA! J  

(Specifications subject to change without notice)