Topband: WD-1 Wire impedance

[Herbert Schoenbohm]

Some discussion of WD-1A on Google claims the impedance is 170 ohms and 
other claim 70 ohms.  I have 1/2 mile on a spool that I will measure 
with a bridge and several resistors to see what is the nearest.


On 10/10/2016 12:38 PM, Herbert Schoenbohm wrote:
> The impedance of WD-1A is supposed to be around 70 ohms  as most 
> telephone wire is.  The DXE boxes are designed for 450 ohms so these 
> boxes are probably not the best choice for
>
> WD1A.  DXE does now have the boxes for WD-1 at a reasonable price but 
> without the switching which will require two RG-6 feed-lines. I prefer 
> this anyway because in my case with the DXE 450 boxes the switching DC 
> voltage seems to attract a zillion ants which somehow got into the box 
> and their excrement destroyed the PC board inside. I still use both 
> the WD-1A boxes and the DXE boxes for their respective antenna cable 
> which are easily modified (even though DXE will not share the 
> schematic...a bummer).  I found the design on line anyway before it 
> was made proprietary. It is simple to make your own schematic because 
> it is not that complicated.  In short taking the relay feature out on 
> the DXE boxes and using equal length of 1/2 wave RG-6U the needed 
> terminations is provided at my shack with a passive 12 channel 
> Panasonic TV video feature that terminates all the Beverage feed-lines 
> that aren't in use. These passive video switchers are very inexpensive 
> on eBay and normally require only F connector to PL-259 adapters or in 
> my case the one I am using has BNC connectors which makes it easier to 
> remove the Beveridge feed lines as is needed.
>
> Herb Schoenbohm, KV4FZ
>
>
> On 10/10/2016 11:48 AM, Jim Cary wrote:
>> I use a DXE reversible beverage system using 450 ohm ladder line 
>> which runs along a fence line between a few friendly neighbors.  
>> However, a couple have commented that “that big wire really sticks 
>> out, especially in the winter,” so I am looking to replace the ladder 
>> line with something less conspicuous but still strong, and WD-1 
>> strikes me as a great candidate.
>>
>> Does anyone know what the impedance of WD-1 is, and has anyone used 
>> it in this fashion?
>>
>> Any comments would be greatly appreciated to JimLCary at gmail.com 
>> <mailto:JimLCary at gmail.com>
>>
>> Thanks,
>>
>> Jim
>> W2SM
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