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#1
January 29th 08, 01:15 AM
posted to rec.radio.amateur.antenna
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Magnetic Longwire Balun Question !!
Hi !.......
I`ve just purchased a WiMo MTFT Multi impedance transformer with three taps at 4:1, 9:1 and 16:1 ratios. Is anyone familiar with this device and can suggest a suitable wire length to start with?? ......the instructions suggest a minimum of 6m around 20ft.... Tried a 33 foot and pruned that back to about 30 feet to get a very good to middling SWR on most bands.......thinking inverted `L`... Garden 35x15feet...... Cheers... Len.......G6ZSG....... |
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#2
January 31st 08, 09:57 AM
posted to rec.radio.amateur.antenna
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Magnetic Longwire Balun Question !!
"Lee" wrote in message .. . Hi !....... I`ve just purchased a WiMo MTFT Multi impedance transformer with three taps at 4:1, 9:1 and 16:1 ratios. Is anyone familiar with this device and can suggest a suitable wire length to start with?? ......the instructions suggest a minimum of 6m around 20ft.... Tried a 33 foot and pruned that back to about 30 feet to get a very good to middling SWR on most bands.......thinking inverted `L`... Garden 35x15feet...... Cheers... UPDATE...... Sorry for the silly question about aerial lengths but it transpired that the impedance transformer was faulty !!! ...... it wasn`t responding too well, the replacement works very well down to 100kcs as a receive ant and covers 160m to 10m with an average 2:1 swr ...... The aerial is an inverted `L` 63 feet long with multiband counterpoise..... Cheers... Len..........G6ZSG....... |
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#3
January 31st 08, 04:33 PM
posted to rec.radio.amateur.antenna
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Magnetic Longwire Balun Question !!
On Thu, 31 Jan 2008 08:57:42 GMT, "Lee"
wrote: UPDATE...... Sorry for the silly question about aerial lengths but it transpired that the impedance transformer was faulty !!! ...... it wasn`t responding too well, the replacement works very well down to 100kcs as a receive ant and covers 160m to 10m with an average 2:1 swr ...... The aerial is an inverted `L` 63 feet long with multiband counterpoise..... Hi Len, How did you make the SWR determination? 73's Richard Clark, KB7QHC |
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#4
February 1st 08, 08:12 AM
posted to rec.radio.amateur.antenna
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Magnetic Longwire Balun Question !!
"Richard Clark" wrote in message ... On Thu, 31 Jan 2008 08:57:42 GMT, "Lee" wrote: UPDATE...... Sorry for the silly question about aerial lengths but it transpired that the impedance transformer was faulty !!! ...... it wasn`t responding too well, the replacement works very well down to 100kcs as a receive ant and covers 160m to 10m with an average 2:1 swr ...... The aerial is an inverted `L` 63 feet long with multiband counterpoise..... Hi Len, How did you make the SWR determination? 73's Richard Clark, KB7QHC With a regular VSWR bridge Richard..... Regards. Len..........G6ZSG..... |
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#5
February 1st 08, 08:54 AM
posted to rec.radio.amateur.antenna
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Magnetic Longwire Balun Question !!
On Fri, 01 Feb 2008 07:12:16 GMT, "Lee"
wrote: How did you make the SWR determination? 73's Richard Clark, KB7QHC With a regular VSWR bridge Richard..... Hi Len, And if you added 16 feet of line (or so) on either side of that bridge, it would still indicate the same SWR relationships? 73's Richard Clark, KB7QHC |
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