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Antenna Loops

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David Posthuma Member Profile All Messages By This Member #59044 There have been many posts regarding end fed?antennas. I hope these posts were helpful.? My favorite portable antenna are?various loops, either full-wave?loops,?quads, or Miniature Magnetic Loop Antennas. Why do I like loops: Because they are a closed circuit resulting in very low noise, far less than a dipole, verticle, or end-fed wire (NOTE: You can't work what you can't hear) Because the can be polarized vertically for low-angle radiation, horizontally, or even a hybrid of these Because they are easy to build and match to a 50-ohm coax But for portable operation, nothing beats a Minature Magnetic Loop antenna. This is because it is light-weight, directional, and can literally sit on the ground and still work perfectly well! I wrote an article about Miniature Magnetic Loop Antennas for the Elecraft.com team way back in 1999 when they were not yet so popular (i.e., I was a builder of the early K2 and beta tester for the 100 watt?linear). Check it out at?. You can build these antennas with materials from any home improvement store. I hope they inspire some antenna building from among the uBitx?building family. David Posthuma, WD8PUO
Arv Evans All Messages By This Member #59054 David A copy of your post to the uBITX group has been forwarded to the [email protected]?discussion group.?? This group was formed to move the long and multiple off-topic posts, mostly about EFHW antennas,? to a place where antennas would be?more on-topic.? If not already on that group you can join at and post to [email protected]?. Arv? K7HKL _._
David Posthuma Member Profile All Messages By This Member #59056 开云体育 Sorry. ? David A Posthuma, WD8PUO 1 (616) 283-7703 ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Arv Evans Sent: Sunday, September 09, 2018 1:14 PM To: [email protected] Subject: Re: [BITX20] Antenna Loops #ubitx-help #ubitx #antennas #loops ? David A copy of your post to the uBITX group has been forwarded to the [email protected]?discussion group.?? This group was formed to move the long and multiple off-topic posts, mostly about EFHW antennas,? to a place where antennas would be?more on-topic.? If not already on that group you can join at and post to [email protected]?. Arv? K7HKL _._
M Garza #59082 Nothing to be sorry for. This is good info! Marco - KG5PRT? toggle quoted message Show quoted text On Sun, Sep 9, 2018, 12:31 PM David Posthuma <davep@...> wrote: Sorry. ? David A Posthuma, WD8PUO 1 (616) 283-7703 ? From: [email protected] <[email protected]> On Behalf Of Arv Evans Sent: Sunday, September 09, 2018 1:14 PM To: [email protected] Subject: Re: [BITX20] Antenna Loops #ubitx-help #ubitx #antennas #loops ? David A copy of your post to the uBITX group has been forwarded to the [email protected]?discussion group.?? This group was formed to move the long and multiple off-topic posts, mostly about EFHW antennas,? to a place where antennas would be?more on-topic.? If not already on that group you can join at and post to [email protected]?. Arv? K7HKL _._
iz oos All Messages By This Member #59114 If you have room enough I would look to reasonably efficient wire antennas such as a G5RV, Doublet and I have seen a very cheap new small tuner from MFJ, don't remember the exact model, I think it is prices at 50Usd. toggle quoted message Show quoted text Il 09/set/2018 16:29, "David Posthuma" <davep@...> ha scritto: There have been many posts regarding end fed?antennas. I hope these posts were helpful.? My favorite portable antenna are?various loops, either full-wave?loops,?quads, or Miniature Magnetic Loop Antennas. Why do I like loops: Because they are a closed circuit resulting in very low noise, far less than a dipole, verticle, or end-fed wire (NOTE: You can't work what you can't hear) Because the can be polarized vertically for low-angle radiation, horizontally, or even a hybrid of these Because they are easy to build and match to a 50-ohm coax But for portable operation, nothing beats a Minature Magnetic Loop antenna. This is because it is light-weight, directional, and can literally sit on the ground and still work perfectly well! I wrote an article about Miniature Magnetic Loop Antennas for the Elecraft.com team way back in 1999 when they were not yet so popular (i.e., I was a builder of the early K2 and beta tester for the 100 watt?linear). Check it out at?. You can build these antennas with materials from any home improvement store. I hope they inspire some antenna building from among the uBitx?building family. David Posthuma, WD8PUO
Richard Spohn All Messages By This Member #59209 David and Dan, I steered you to the wrong MFJ SWR meter. I mentioned the MFJ-818, but in fact MFJ manufactures a different model SWR meter, the model MFJ-822, that is cheaper at $60, but curiously seems to be better built than the 818. You can't do much better than the model 822...in fact I may have to heat up my own plastic in prep for a buy. -- Rich WB2GXM toggle quoted message Show quoted text On 9/10/18, iz oos <and2oosiz2@...> wrote: If you have room enough I would look to reasonably efficient wire antennas such as a G5RV, Doublet and I have seen a very cheap new small tuner from MFJ, don't remember the exact model, I think it is prices at 50Usd. Il 09/set/2018 16:29, "David Posthuma" <davep@...> ha scritto: There have been many posts regarding end fed antennas. I hope these posts were helpful. My favorite portable antenna are various loops, either full-wave loops, quads, or Miniature Magnetic Loop Antennas. Why do I like loops: 1. Because they are a closed circuit resulting in very low noise, far less than a dipole, verticle, or end-fed wire (NOTE: You can't work what you can't hear) 2. Because the can be polarized vertically for low-angle radiation, horizontally, or even a hybrid of these 3. Because they are easy to build and match to a 50-ohm coax But for portable operation, nothing beats a Minature Magnetic Loop antenna. This is because it is light-weight, directional, and can literally sit on the ground and still work perfectly well! I wrote an article about Miniature Magnetic Loop Antennas for the Elecraft.com team way back in 1999 when they were not yet so popular (i.e., I was a builder of the early K2 and beta tester for the 100 watt linear). Check it out at . You can build these antennas with materials from any home improvement store. I hope they inspire some antenna building from among the uBitx building family. David Posthuma, WD8PUO

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