Hello Warren The addition of a modified PA0LQ audio filter would probably do the trick. A good number of us on the NDB list are using 8Hz or narrower versions of this filter with great success. http:
Hi Tracey, Alex, I have a 1650/6 which Geoff mofided by the addition of an opto-encoder for tuning as well as some other modifications. It works well but lacks a narrow cw filter which would be neces
Hello Alex In case you're not aware of it, there is a kit available to make this receiver tuneable You need to contact Geoff Steedman M0BGS "Geoff Steedman" <[email protected]> He did an art