(last updated June 2011)
**** Kits are now sold out ****
This project appeared in the September 2003 issue of Amateur Radio magazine from the WIA . This kit is an updated version of the 80m MK1 kit and is based on an original concept by VK3MZ except that it is more sensitive, easier to construct and much more compact. See below for construction details.
Note that this is a FULL superhetrodyne SSB receiver, not a direct conversion design.
If you are rolling your own receiver and need some of the more specialised parts mentioned in the project (Like the Toko coils, for example) please contact me as some parts still available.
At some stage soon I plan to make a full featured autoranging receiver based on a similar concept to the MK4 2m receiver.
Full details on the MK2 80m sniffer are provided here:
*** New *** FAQ, tips and tricks page. - Includes known issues and suggested fixes for the current 80m sniffer.
80m Sniffer Manual
80m Sniffer Schematic
80m Sniffer PCB assembly
80m PCB artwork
80m box drilling detail
A manual Range Control for the 80m sniffer . (A PCB for this option was provided with every kit)
I have been experimenting with a prototype autorange add-on for the 80m MK2 sniffer. Since the kits are now sold out and I am considering a complete new receiver, it is unlikely this project will be taken much further.
There is a modification available to make the "whoopie" mode of this sniffer version more sensitive. These changes were provided by Bruce Paterson (VK3TJN). A marked up schematic of the changes as provided by Bruce can be found here.
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