[time-nuts] WWVB/Anthorn Re: time-nuts Digest, Vol 195, Issue 27

[David G. McGaw]

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 <Andre at 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-bounces at lists.febo.com> on behalf of
>> time-nuts-request at lists.febo.com <time-nuts-request at 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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