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Old 22nd Jan 2018, 10:23 am   #1
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Default Looking for a cheap and simple shortwave regenerative kit

Hi all,

I posted a similar topic to a dedicated mailing list but I didn't get the solution I needed.

I'm looking to build a simple regen receiver which can also be used as part of my practical assessment for the UK Intermediate Licence.

It can either be a commercial kit or a just a circuit, but it has to be made from commercially available components. I cannot and don't want to build my own coils.

My requirements are, in order of importance:

- cheap
- simple design
- transistors (not valves)
- lightweight (no enclosures or speakers, just the circuit)
- Ideal bandwidth from MW to 15 Mhz. If this is not possible, at least covering
from 80m to 20m amateur bands; alternatively I would consider a regen that covers the medium waves up to 2Mhz
- Bandspread should be enough to be able to tune to ham ssb stations
- If it's a kit it should be available to be shipped to the UK,
otherwise components can be bought pre made (eg coils)

I was advised to order the Walford Rockwell:
http://www.walfords.net/simple.htm

I also have the pdf of the instructions (I'm not sure if copyrights allow me to post it here). It looks like a nice and clean project, but I think this was born for the CW portion only. The circuit apparently can be made to cover either 700 KHz to 1.3 MHz or 1.4 to 2.4 MHz (for the top band); 3 to 4 MHz on the 80m and on the 40m the bandspread is only 120khz. Apparently you can only have two of the above but not all.

Otherwise other options are more complicate and expensive, like the KRC2:
http://www.kitradio.co.uk/page10.htm

It's not that I cannot afford the money but I just want something simpler.

Any input will be appreciated.