[time-nuts] Cables dor 10 mHz

Mark Spencer mspencer12345 at yahoo.ca
Mon Jul 30 20:03:45 UTC 2012


Yep..  I'm slowly replacing my no name rg 58 jumpers with double shieled rg 400.   I also have some 1/4 inch "heliax" cable that also works well.


I found that terminting all of the un used outputs with 50 ohm terminators  also helps keep the noise down.


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On Mon, 30 Jul, 2012 3:31 PM EDT Chuck Forsberg WA7KGX N2469R wrote:

>I am driving a Flexradio 1500, Racal-Dana 1992 counter,
>Advantest U3641 spectrum analyzer, and my new
>HP 3586B+ selective  level meter with the 10 mHz from
>my Thunderbolt.  I had been using some old Ethernet cables
>to drive this lot until last weekend.
>
>I noticed that WWV on 10 mHz was being swamped by
>leakage from these old cheap cables.  This weekend I
>replaced the lot with fat instrumentation grade cables.
>This appears to have prevented the Thunderbolt's 10 mHz
>from messing with Boulder's signal.
>
>-- Chuck Forsberg WA7KGX N2469R     caf at omen.com   www.omen.com
>Developer of Industrial ZMODEM(Tm) for Embedded Applications
>  Omen Technology Inc      "The High Reliability Software"
>10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430
>
>
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