Hi
> On Jan 2, 2021, at 8:54 PM, Lux, Jim wrote:
>
> On 1/2/21 4:31 PM, Bob kb8tq wrote:
>> Hi
>>
>> There is the R-390 and it has a mailing list…..
>>
>> If you are not running radio, then leakage may not be a problem for you.
>> Thus no
>> need to start hunting for it.
>>
>> Bob
>
>
>
If you're looking for a repeater check out this article. I have no idea if
it works or not. I have not built one.
http://www.ka7oei.com/wwvb_antenna.html
Image of the schematic
http://www.ka7oei.com/wwvb_ant_1d.gif
Mike
On Sun, Jan 3, 2021 at 4:46 AM Erik E. Fair wrote:
> I don't suppose
I don't suppose there's any passive repeater solution for WWVB, e.g. antenna in
attic feeding coax to another, hopefully smaller antenna to reach radio clocks
with less-than-adequate built-in antennas in more unfortunately shielded parts
of a house? Similar to how Community Antenna Tele-Vision
On 1/2/21 4:31 PM, Bob kb8tq wrote:
Hi
There is the R-390 and it has a mailing list…..
If you are not running radio, then leakage may not be a problem for you. Thus no
need to start hunting for it.
Bob
The R-390 (or 390A) are not what might be termed lightweight .
(about 40kg, I believe)
Hal, I just ordered a "TinySA", largely with leak tracking in mind. I
won't have it until
about mid month (January), but have high hopes for it. I'm planning to use
it with
a small single-turn electrostatically-shielded loop, which I believe will
yield adequate
sensitivity for the purpose while
On 1/2/21 4:31 PM, Bob kb8tq wrote:
Hi
There is the R-390 and it has a mailing list…..
If you are not running radio, then leakage may not be a problem for you. Thus no
need to start hunting for it.
Bob
The R-390 (or 390A) are not what might be termed lightweight .
(about 40kg, I believe)
Hi
There is the R-390 and it has a mailing list…..
If you are not running radio, then leakage may not be a problem for you. Thus no
need to start hunting for it.
Bob
> On Jan 2, 2021, at 6:03 PM, Hal Murray wrote:
>
> Bob kb8tq said:
>> If you can hear it on your radio with your normal
Bob kb8tq said:
> If you can hear it on your radio with your normal antenna â¦. itâs leaking.
Thanks.
I don't have a radio that covers 10 MHz.
Is there any particular brand/model of radio that people recommend for general
time-nuts sort of hacking? Or where do the radio-nuts hang out?
Is
@dana I bought one of the TinySA from the usa distributer. It even comes
with an sma antenna that screws right on. I'm actually pretty amazed with
how this little thing works! You can see the radio stations around easily
along with other things if they're leaking. Really amazing little piece
Hi
> On Dec 27, 2020, at 10:30 AM, Tim Shoppa wrote:
>
> Presumably any "rebroadcast" of WWVB is done in the spirit of near-field
> communications where any far-field radiation falls off like 1/r^3 from a
> small inductive transmitter loop.
>
> A loop the size of your entire house would be
I have been using Chronvertor for years to simulate MSF transmission
(from GPS source) since I am way outside the range of the British
transmitter. However I am feeding the signal directly into the receiver
so no problems with (un)intentional radiation.
According to the homepage
Presumably any "rebroadcast" of WWVB is done in the spirit of near-field
communications where any far-field radiation falls off like 1/r^3 from a
small inductive transmitter loop.
A loop the size of your entire house would be "small" in terms of 60kHz
wavelength.
Unintended coupling of the 60kHz
It just occurred to me that one of the TinySA's could be handy for tracking
down
leaks like this.
Dana
On Sun, Dec 27, 2020 at 8:02 AM Bob kb8tq wrote:
> Hi
>
> If you can hear it on your radio with your normal antenna …. it’s leaking.
>
> If you want to track it down, normal radio frequency
Hi
If you can hear it on your radio with your normal antenna …. it’s leaking.
If you want to track it down, normal radio frequency direction finding
techniques
work. At 10 MHz a loop or rod antenna is likely your best bet.
Bob
> On Dec 27, 2020, at 5:05 AM, Hal Murray wrote:
>
>
>
Do your receiver clocks need continuous access to the signal? The several
radio-clocks I have here in England only enable their receiver for a few
minutes at about 01:00 to reset themselves, and then put the receiver to
sleep again. If yours are similar, your rebroadcast system could be
Hal wrote:
Transmitting on the same frequency you are receiving on seems like asking for
troubles.
Difficult perhaps, but not impossible. As /tvb notes, one solution is
time domain multiplexing; and, as Alex says, phase domain multiplexing
is another (although the phase discrimination of
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