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Search took 0.00 seconds. Search: Posts Made By: transmitterdan
Forum: Marine Electronics 17-04-2016, 05:39
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

I agree with John that anything (or nothing) on the ground side will work at some frequencies.

I am not arguing with you. I read your post and thought you were using a power meter. The data...
Forum: Marine Electronics 14-04-2016, 17:16
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

My point is that measuring power in the ground lead is not the same as measuring current. Also, most power meters don't measure "power" they measure forward and/or reflected power (technically they...
Forum: Marine Electronics 14-04-2016, 14:44
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

A power meter indicates forward and reflected power. It is not a current measurement. Forward or reflected power on the ground wire is a not germane to determining radiated power.
Forum: Marine Electronics 14-04-2016, 10:23
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Are you using a current meter or a power meter? They two are significantly different in how they work.
Forum: Marine Electronics 28-01-2016, 08:39
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

I have seen and run many electromagnetic field simulations. For sure the wires "concentrate" the fields. The "ground" wires are no different in this respect than the radiator wire. The fields are...
Forum: Marine Electronics 28-01-2016, 05:41
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Goudurix is correct that the problem is non-trivial. Each path added to the ground return collects some current and brings it to the tuner "ground". This current has to be induced into the wire by an...
Forum: Marine Electronics 26-01-2016, 10:13
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Multiple ground paths are ok. Electrons take the path of least impedance which is what you want for a ground system. It's unlikely any problem is created by multiple paths. If it's working leave it...
Forum: Marine Electronics 18-01-2016, 16:53
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Is this the first time a phobia could be cured with a capacitor? ;)
Forum: Marine Electronics 18-01-2016, 15:06
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

It is easy to isolate the through hull against galvanic issues. But your description of the problem suggests the boat did not have galvanic isolation. That is another subject and must be addressed...
Forum: Marine Electronics 18-01-2016, 10:32
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

What's wrong with attaching something to a through hull? If you worry about galvanic effects use a capacitor to isolate DC.
Forum: Marine Electronics 18-01-2016, 08:50
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

There is nothing wrong with tying the tuner to that ground plate. Go for it. Electrons cannot read a schematic so they have no idea that plate is meant only for lightning. Lightning cannot read a...
Forum: Marine Electronics 18-01-2016, 05:23
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

A copper strip about 100mm (4 inches) wide that connects the tuner to a nearby bronze underwater through hull is the cheapest and often the best solution. "Nearby" meaning preferably 1M (3-4 feet) in...
Forum: Marine Electronics 23-12-2015, 04:47
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

In order for the KISS to do what is claims it must radiate RF power from the bundle of wires. There is no other way for current to flow in the ground terminal of the tuner. And there must be current...
Forum: Marine Electronics 22-12-2015, 05:29
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Someone has done the proper measurements. https://sfbaysss.org/resource/doc/SeawaterGroundingFor_HF_Radios_byGordonWest.pdf
Forum: Marine Electronics 07-10-2014, 20:54
Replies: 378
Views: 131,495
Posted By transmitterdan
The KISS SSB Counterpoise - Revealed ( with Pics )

If you had read the messages you would have found that this type of ground system has been measured and found not to work as well as its proponents think it does. These systems are not as good as a...
Forum: Marine Electronics 02-03-2014, 05:54
Replies: 378
Views: 131,495
Posted By transmitterdan
The KISS SSB Counterpoise - Revealed ( with Pics )

I agree. Don't worry that the thru-hulls are bonded. Use the capacitor trick unless using the SGC tuner with internal DC blocking. The foil does not have to be heavy to work. The thickness is purely...
Forum: Marine Electronics 26-02-2014, 18:39
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Nick, you're killing me...
Forum: Marine Electronics 26-02-2014, 03:20
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

There is no need to waste money on several expensive oversize capacitors in this application. The surface mount capacitors are rated for RF and the math dictates that they will work just fine. We do...
Forum: Marine Electronics 25-02-2014, 04:28
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

There is no need for an expensive 7.5kV capacitor in the ground lead.

The voltage on the DC blocking capacitors cannot be several kilovolts. Ground current is less than 100A for sure and most...
Forum: Marine Electronics 25-02-2014, 03:58
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Somebody did that already:

https://www.kp44.org/ftp/SeawaterGroundingFor_HF_Radios_byGordonWest.pdf
Forum: Marine Electronics 24-02-2014, 12:20
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

No one is saying your install does not make contacts. Plebian99 used maybe too many words but the reasoning is correct. Just because someone gets good enough results does not prove a selected piece...
Forum: Marine Electronics 24-02-2014, 05:29
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

I would not think it a great idea to connect the SSB tuner ground to a water or fuel tank. There isn't any need for that. Connect the SSB tuner to a convenient thru-hull with a copper foil (wider is...
Forum: Marine Electronics 07-02-2014, 18:05
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

Here's one pic.

https://content.westmarine.com/wm-img/westadvisor/articles/Marine-Grounding-4.jpg
Forum: Marine Electronics 06-02-2014, 17:03
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

That's good to know. The SGC tuner is a popular one for marine use. I wonder if other marine tuners do that?
Forum: Marine Electronics 06-02-2014, 15:04
Replies: 378
Views: 131,495
Posted By transmitterdan
Re: The KISS SSB Counterpoise - Revealed ( with Pics )

If SGC is putting in a DC block they aren't showing it in their literature. The schematic in the technical manual is from 1992 and it shows no capacitor in the tuner ground.
Showing results 1 to 25 of 35
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