Hello Dave and Group,
I had responded directly to Martin and will include my comments to him. Right
now I hesitate to pull the tape off the coax at the XFRM but will do that ASAP
to check it out. When I took it off the old spool it had not been used but it
is donated to me from a junk yard lot. I also got a 4 foot spool nearly full
of 1/2" hardline I'm planning on replacing my ground run of LMR-400 with. 75
ohm but it should work if I can build the connections to the LMR-400 PL-259's,
etc.
Disconnecting the ground as well as the BOG (in this case) from the XFRM causes
the noise to drop down to about S-1 to S-2.
With ground connected to the XFRM I get about S-5 noise level without any
antenna.
Per my note to Martin you can read my other test. Right now with the 550-600
ft. beverage hooked up along with ground of course, I get S-5 noise level and
can't hear an S-9+10 over signal on 7.235 Mhz.
Terry
KI7M
----------------
Hi Martin,
I will perform some checks and let you know. The beverage is plugged into RX IN
jack like it should be. I just removed the Array Solutions Front End Protector
and that seemed to make the noise floor lower on AM band. I was able to pick up
signal perhaps a little better. Not the best time to be testing right now at
10:30 AM for these bands of course. But in checking on 80 mtrs I found an SSB
signal on 3947 KHz and checked that. An S9+10 signal can't be heard when I
switch in the RX BOG. I background goes from S-6 up to S-7 when i switch the RX
in?
The XFMR is the one with the SO-239 for the coax which of course is the right
one. I have tried beverage and ground swapped both ways on the two 'butterfly'
connections. I will switch back to the 550-600 north beverage from the BOG and
do some more checking later.
Terry
KI7M
> On January 13, 2018 at 10:19 AM David Olean wrote:
>
>
> 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@contesting.com
> mailto:topband-request@contesting.com wrote:
>
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> > Today's Topics:
> > 1. Re: My beverage only hears static? (Martin)
> >
> >
> > ---------------------------------------------
> >
> > Message: 1
> > Date: Sat, 13 Jan 2018 16:12:29 +0100
> > From: Martin
> > To: topband@contesting.com mailto:topband@contesting.com
> > Cc: ki7m@comcast.net mailto:ki7m@comcast.net
> > Subject: Re: Topband: My beverage only hears static?
> > Message-ID:
> > 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@contesting.com
> > mailto:topband-request@contesting.com :
> >
> > > > > Message: 8
> > > Date: Fri, 12 Jan 2018 12:44:25 -0800 (PST)
> > > From: terry burge
> > > To:topband@contesting.com mailto:topband@contesting.com ,
> > > terry burge
> > > Subject: Topband: My beverage only hears static?
> > > Message-ID:<787619245.139836.1515789865550@connect.xfinity
> > > mailto:787619245.139836.1515789865550@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
> > >
> > > > >
> > > _________________
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