Andre you can add layers of litz wire. You actually have litz wire? Thats hard to find these days. But it most likely will need to be more than a few layers. I would slip to small pieces of cardboard on both sides of the existing coil (glue in place) and then fill with the new wire. Check the L every 5 layers. May guess you need 10. But what you want to do can be done. Regards Paul WB8TSL
On Sun, Oct 18, 2020 at 5:54 AM Andre <[email protected]> wrote: > Hi folks. > Just a quick question, but I found a small AM/FM radio here (50p!) with a > tiny ferrite rod. > Wonder what it uses to set the frequency for AM range? > Surely not a tuning diode like MV1404 as these are incredibly expen$ive. > Was wondering about pulling the rod and modifying it for WWVB as my > existing radio clock > works and it would be a shame to mess that up. > Should be easy enough as I have (somewhere!) a working LCR meter so can > wind a suitable > winding over the existing one if its too far off or simply add a couple of > layers of Litz wire > to approximate the required 65 kHz WWVB. > I'd also need to locate a 65 kHz quartz crystal for the XT2 position. > External antenna might be better here as it would be very weak indeed > being from the USA > but there's a couple of methods I can use to improve this like using an > optical relay from > multiple locations at equidistant points. > thanks! Andre > > ________________________________________ > From: time-nuts <[email protected]> on behalf of > [email protected] <[email protected]> > Sent: 17 October 2020 23:02 > Teference to match the DUT. But if you do want to mix both the REF and > DUT channels, wouldn't it be better to use a single source to drive both > mixers? > > > > John > > ---- > > > > On 10/17/20 8:59 AM, Gerhard Hoffmann wrote: > >> I'm trying to make a quick frequency extender for a timepod. > >> MCL PSC2-1 power divider, 2* SRA-1 7 dBm ring mixer, 2 DIL 80 > MHz-oscillators > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
