Note that WWVB is 60kHz, not 65kHz.
David N1HAC
On 10/18/20 10:35 AM, paul swed wrote:
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 <an...@lanoe.net> 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 <time-nuts-boun...@lists.febo.com> on behalf of
time-nuts-requ...@lists.febo.com <time-nuts-requ...@lists.febo.com>
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
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