[TenTec] TenTec 228 ATU - update

[Marinus Loewensteijn]

Found a construction description of a 1:9 unun with a FT114-61 toroid that 
spans several bands. Will try this setup with a low pass L-C matching network 
since it will have very low losses. Don't know how long the link will stay current 
but here it is (it is in German but the pics will give enough information).

http://www.technik.ba-ravensburg.de/~lau/beverage-unun/beverage-unun.html

The backup plan will be to build an S-Match and then use a Guanella 4:1 output
unun for matching the lowest impedances. According to some information the 
losses in properly build Guanella are low and it can handle up to a 1:5 SWR.

73, Marinus, ZL2ML

_________________________________________________________________
Find singles in your area with Match.
http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fmatch%2Enz%2Emsn%2Ecom%2Fchannel%2Findex%2Easpx%3Ftrackingid%3D1043416&_r=WL_EMAL_TAG&_m=EXT