KRC-1 Step by step approach to building a superhet receiver.


 

BASIC KIT.    First introduced in 2002 the original KRC-1 step by step approach to building a superhet receiver proved very popular with our customers. By listening to their observations we were able to enhance the design in 2007. This year we have pushed the kit even further forward. Keeping the original step by step concept, the basic four band superhet starts life as a medium wave

TRF receiver.This easy to construct receiver is added to the ready made mixer/oscillator, transforming your TRF receiver to a superhet, that can be tailored to your needs, with the addition of all or any of the available options . Above you can see the TRF receiver built from the basic kit. Remember, KRC kits are designed to make construction easy. The high Q tuning coil is pre wound! And supplied as an assembly! The PCB is supplied with component marking on the top side! Avoiding ambiguity and errors in component placement. Don't forget your kit is supported by the KRC get you going service. If at any stage of construction your kit fails to work, just return it to us, with a cheque for £10 and we will return it to you in full working order. The completed superhet receiver is shown to the right, all ready for fitting to the case, supplied as part of your basic kit. Detailed setting up instructions are provided and no test equipment is required.

CUSTOMIZE WITH THESE AVAILABLE OPTIONS.       Remember any of these options can be fitted at any time in any order.

BFO.    Bring in those CW and SSB signals. As you can see in the previous pictures full provision has been made on the basic kit to accept this option with no cutting or drilling. Once you have built the BFO it will fit straight into your superhet receiver. A small adjustment of the on board trimmer and you will be away.

 

FREQUENCY DISPLAY.    Bring your receiver into the 21st century with this PIC based option. Providing accurate display of the received frequency on a 4 digit LED display. Don't panic, no knowledge of PIC's or programming is required by you. All this is taken care of by us, we provide you with a pre programmed, tested PIC. All you have to do is solder it in the board and you've entered the digital age!

 

 

To the left you can see a display board being fitted to a receiver. The cut out and display bezel are all supplied with your kit. No additional parts or hardware have to be added by you.

 

 

LONG/MEDIUM WAVE LOOP ANTENNA.    An internal loop antenna. Increases the frequency coverage providing reception of both long and medium wavebands without a wire antenna. Again no drilling or cutting required. It just screws to the rear panel!

JUST TO RECAP.    Your basic receiver will include everything you require to build the four band superhet. Even the batteries are supplied if you are ordering from the UK.

OPTIONS AVAILABLE.

BFO.                                                    For the reception of CW/SSB transmissions.
FREQUENCY DISPLAY.                 Providing digital display of your received frequency.
INTERNAL LOOP ANTENNA.      Allowing reception of the long and medium wave broadcast bands without the use of a wire antenna.


Frequency coverage.    Band.     1         700 - 1600.
In kHz.                                     2        1660 - 2660.
                                               3        3260 - 4300.
                                               4        6820 - 7470.
Case size 11 x 5 x 4.5 inches. Power supply 6 x AA cells.

Click on the links below to view the receiver operating

Basic Kit    £78.60 + p&p £8.00

BFO    £26.75 + p&p £2.00

Frequency Display    £40.48 + p&p £2.00

 Loop Antenna    £15.37 + p&p £2.00