I've dug out the decent signal generator which is a Dymar 1525 and covers 100KHz to 184MHz so should be good for testing the RF and IF stages. I haven't used the Dymar for ages and for an all solid state device it is big and heavy. I've fired it up and given it a soak test and all seems to be working well and indeed it functions down to 100KHz. This is a nice signal generator with lots of capability, eg AM or FM mod, adjustable mod frequency and depth or external mod, fixed level output independent of attenuators for connecting a frequency counter (a particularly useful feature) and lots more. Next stage will be to inject a modulated 130KHz signal into the start of the IF stages and see if anything comes out the other end
