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PAØRDT Miniwhip Shakedown Continues
13 March 2016 | by Those of you that have been following the recent set of four YouTube videos posted in my recent PAØRDT Miniwhip Shakedown blog, regarding the care and feeding of the PAØRDT active e-probe antenna, may be interested in a fifth video in the series, posted by Mike in the U.K.
PAØRDT's recent modification of the isolating transformer, in the miniwhip coupling unit, provides much better immunity to common mode noise-coupling in the HF bands. Mike shows the installation and operation of the new unit along with some additional grounding out at the antenna.
Those of you that are looking for a possible solution to relatively good reception on LF or on the 630m band, might find the answer with a carefully thought out installation such as the one shown in Mike's video series.
Although living in the suburbs often means dealing with a lot of noise, particularly on LF / MF, Mike's system shows that excellent low noise reception is indeed possible. It is important to 'probe' your backyard with the antenna itself in order to find the quietest location for installation.
More information on the PAØRDT miniwhip and other low-noise LF / MF antennas may be found in previous blogs here.
Steve McDonald, VE7SL, is a regular contributor to AmateurRadio.com and writes from British Columbia, Canada. Contact him at [email protected].PAØRDT's recent modification of the isolating transformer, in the miniwhip coupling unit, provides much better immunity to common mode noise-coupling in the HF bands. Mike shows the installation and operation of the new unit along with some additional grounding out at the antenna.
Those of you that are looking for a possible solution to relatively good reception on LF or on the 630m band, might find the answer with a carefully thought out installation such as the one shown in Mike's video series.
Although living in the suburbs often means dealing with a lot of noise, particularly on LF / MF, Mike's system shows that excellent low noise reception is indeed possible. It is important to 'probe' your backyard with the antenna itself in order to find the quietest location for installation.
More information on the PAØRDT miniwhip and other low-noise LF / MF antennas may be found in previous blogs here.
4 Responses to “PAØRDT Miniwhip Shakedown Continues”
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Funny, tonight I was (finally) sorting out the shelves with radio material and found my notes and info on the mini-whip. Now you come along with an improved version. Coincidence??? Any links to the schematics? Did a quick Google search, but could only find the usual info; nothing on the new isolated feed.
Hans…I did have some xfrmr info in a recent blog but this was gathered from e-mail exchanges. I don’t think anything has been published. This link should bring up the recent blogs:
http://ve7sl.blogspot.ca/search/label/PA0RDT
In addition Hans, the xfrmr installation into the power-feed unit is shown here:
http://deimert.se/miniwhip/pa0rdt-Mini-Whip-Manual.pdf
Cheers, I know remember that blog post of yours. Sorry, but my mind has been overloaded for a while now and I keep forgetting things constantly. But I’ve got most of my radio stuff sorted now and I think I have some high mu cores lying around. I’ll check tonight. Seems easy enough to quickly modify the old PFU.