Topband: Topband Digest, Vol 181, Issue 16

[David Olean]

Hello Terry

I would suspect the coax could be bad. Is it new or has it been laying 
around awhile.?  I have had water get into flooded RG-6 coax, and with 
all the metals associated with the shielding, the corrosion has produced 
a battery effect and there is DC voltage there as read on a high 
impedance DVM. Of course the coax produced copious amounts of noise as 
well.  Critters had chewed on the new coax to allow water entry.  You 
can test the cable with an antenna analyzer or even a DVM. You should 
see no leakage between conductors. If there is any resistance showing, 
you have a problem.  If you disconnect the beverage at the far end, the 
noise should drop to zero with just the coax connected.  If you hear 
noise, it is coming in on the coax or is being generated within the 
coax.  Good luck and I hope you find the problem.

Dave K1WHS


On 1/13/2018 5:00 PM, topband-request at contesting.com wrote:
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>     1. Re: My beverage only hears static? (Martin)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 13 Jan 2018 16:12:29 +0100
> From: Martin <dm4im at t-online.de>
> To: topband at contesting.com
> Cc: ki7m at comcast.net
> Subject: Re: Topband: My beverage only hears static?
> Message-ID: <ef7517b9-3013-9c5f-7a5c-32604891afd1 at t-online.de>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> No matter where the beverage points to, terminated or not, hearing only
> s5 static just seems not right to me.
> Did you connect your antenna to RX IN (not OUT) ? What XFMR do you use?
> Grounded the coax at the feedpoint by accident? What happens when you
> leave the frontend protector out of the setup? Will your K3 pick up
> signals when you connect your TX-antenna to RX IN?
>
> 73, Martin
>
>
> Am 13.01.2018 um 15:16 schrieb topband-request at contesting.com:
>> Message: 8
>> Date: Fri, 12 Jan 2018 12:44:25 -0800 (PST)
>> From: terry burge<ki7m at comcast.net>
>> To:topband at contesting.com, terry burge<ki7m at comcast.net>
>> Subject: Topband: My beverage only hears  static?
>> Message-ID:<787619245.139836.1515789865550 at connect.xfinity.com>
>> Content-Type: text/plain; charset=UTF-8
>>
>> Hi folks,
>>
>>
>> I put up my first beverage recently. It's about 550-600 feet of 17 gauge electric fence wire running to the north about 6-7 feet high. Not terminated right now but using a beverage transformer I purchased on qth.com and have not put on the termination yet. Using a 5' galvanized ground rod at the transformer and 75 ohm RG-6 surplus I got about 35 feet to my K-3 Elecraft thru an Array Solutions frontend protector to the RX antenna connection.
>>
>>
>> All I get is S-5 static on the beverage. Even the strong stations barely make a ripple of noise. Is this right?
>>
>>
>> I added some clamp on ferrites to see if the Common Mode Noise would be cut down but after putting 5 on the RG-6 coax there is no difference. Just that S-5 static level on any band 80/40/20/etc. Right now I'm listening to P49MR on 14.250.0 Mhz and his 57 signal does not even come thru on the beverage when I switch to RX antenna?
>>
>>
>> Terry
>>
>> KI7M
>>