I own a Wouxun KG-UVD1P that I use on my job in the public safety field. Recently while reprogramming it to include some municipalities that I didn't have in before, I found out that the radio allows you to select "positive" (ie: D503N) and "negative" (ie: D503I) DPL codes. In the lists of frequencies found on this website, it doesn't specify positive or negative DPL. Is there a standard for this? If an agency is listed as a DPL of 503, can it be assumed to be positive or should it be assumed to be negative? Is there a standard for this?
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DPL - Positive or Negative?
- Thread starter W2PSK
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RKG
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What you call "positive" is called "normal" in DPL-speak; "negative" is "inverted." Almost always, a published DPL refers to the "normal" configuration.
The difference is which way the voltage begins to swing from zero at the beginning of the string. As a result, the shape of the wave for one DPL inverted will be identical to the shape of some other DPL normal. For instance, DPL243 inverted looks the same as DPL351 normal.
The difference is which way the voltage begins to swing from zero at the beginning of the string. As a result, the shape of the wave for one DPL inverted will be identical to the shape of some other DPL normal. For instance, DPL243 inverted looks the same as DPL351 normal.
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