[time-nuts] WWVB new modulation...

Christopher Brown cbrown at woods.net
Sat Nov 24 22:54:35 UTC 2012


Ahh.

Small lot w/ antenna restrictions here, so my main antenna is a inverted
L < 35ft from my second floor shack.  Means that any leakage that can be
detected in the shack with a small loop at 4 feet can be easily heard on
the main antenna.

So, filters and ferrite chokes on everything, LMR240, 400 or 400UF for
everything except a few temp use jumper, and I clear all the seems of
all the gear, check for leaks and even keep a few rolls of conductive
adhesive copper EMI tape around.

Like the be able to run all my gear without hearing it, and figure any
egress is a potential egress.  If the antenna 35ft away can hear it,
then 500w transmit on the same antenna is likely to get in and screw
with the gear.

Chris - WL7CLA

On 11/24/12 7:24 AM, Burt I. Weiner wrote:
> Hi Chris,
> 
> I'm sure they're leaking pretty badly, but it's not enough to bother 
> my normal usage.  My other receivers do not hear my standards even 
> though they are in the same rack, but the Heathkit does, even with an 
> outside antenna.  The Heathkit's front end is not shielded worth 
> beans as it was not intended to operate in this kind of 
> environment.  My two DATUM 9390's feed two video D.A.'s Video Patch 
> bays and all my cables are Belden 8281.  The D.A.'s are rack mount 
> and use plug in cards and are not that well enclosed.
> 
> Burt, K6OQK
> 
> 
>> From: Christopher Brown <cbrown at woods.net>
>> To: time-nuts at febo.com
>> Subject: Re: [time-nuts] WWVB new modulation...
>>
>> On 11/23/12 8:28 AM, Burt I. Weiner wrote:
>>> I still have two of the Heathkit clocks, but alas, they won't work at
>>> home because of my standards.
>>>
>>> Burt, K6OQK
>>
>> Are your equipment and interconnects leaking that badly?
> 
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California  U.S.A.
> biwa at att.net
> www.biwa.cc
> K6OQK 
> 
> 
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