A correction:they have changed focus, but NO kits...the stuff they have left is on Amazon AND eBay
On Mon, Jun 6, 2016 at 10:16 PM, M. K. <ka2mce@gmail.com> wrote:
Last time I checked, Ramsey was in the process of going out of business....they were selling off what was left of their inventory on Amazon or eBay(I forget which).On Mon, Jun 6, 2016 at 1:18 PM, David Eckhardt davearea51a@gmail.com [Amateur-repairs] <Amateur-repairs@yahoogroups.com> wrote:If you are measuring audio filters, there are a number of function generator chips available for not much $$. I hate to mention Ramsey, but they offer several parts bags which, when completed, offer a highly usable audio function generator.If you are measuring at RF frequencies, that's a whole different story. In an absolute pinch, I've used a GDO (grid dip oscillator) and an o'scope but GDOs are typically not too stable and require very loose coupling for stability.
I've seen a number of old tube Heathkit sig generators on ebay and other sites, but they, as well, aren't too stable but better than a GDO. Typically, they go only to 30 MHz. You can always use a diode multiplier, but that also multiplies the frequency instability by the multiplication factor.Dave - WØLEVOn Mon, Jun 6, 2016 at 11:10 AM, Steve Toth stoth47@yahoo.com [Amateur-repairs] <Amateur-repairs@yahoogroups.com> wrote:What's a good inexpensive, or inexpensive and functionally acceptable substitute, for a function generator? Main interest is using it to measure Bandwidth on filters and Inductance.- Steve W7SJT"Always look for a positive solution then Improvise, Adapt, and Overcome""Sometimes it is the people who no one imagines doing anything, who do the things that no one can imagine".....
--Dave - WØLEVJust Let Darwin Work
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Posted by: "M. K." <ka2mce@gmail.com>
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