That is the legal power for those that run the legal power. Not those that run more than the legal power... Mike-WE0H I was making the point clear as Roger is a UK amateur & 1 watt ERP is currently t
Roger A T- 200 is ideal but maybe too large for u. Except you have a large antenna 20w is not enough on 137 for any serious impact. The aim on this band is for at least 1W erp de mal/g3kev -- Origina
All, Thanks for the good advice already regarding LPF toroids for 136kHz. Sounds like a T68-2 or T157-2 (or something in between) should fit my requirements well. Mal, et al, my ERP is unlikely to ex
No so, only in the UK generally, and 10w erp has been authorised in the past, other countries 20 plus watts erp. If you have a vy small antenna you would need around 5Kw to get 1w erp and would need
Mal, there are also T400-2 available! Roger, i've found a list which may be suitable/informative: http://www.xs4all.nl/~barendh/Cateng/Cateng_amidon.htm 73, Stefan Am 25.07.2010 20:52, schrieb mal ha
No so, only in the UK generally, and 10w erp has been authorised in the past, other countries 20 plus watts erp. If you have a vy small antenna you would need around 5Kw to get 1w erp and would nee
Roger, this depends on the bandwith or Q that you want to have. You could build band filters that are much smaller than the band! But this is maybe not necessary in your case. Something between 1...1
Roger A T- 200 is ideal but maybe too large for u. Except you have a large antenna 20w is not enough on 137 for any serious impact. The aim on this band is for at least 1W erp de mal/g3kev -- Orig
Roger, this depends on the bandwith or Q that you want to have. You could build band filters that are much smaller than the band! But this is maybe not necessary in your case. Something between 1...
Dear Roger, LF Group, I used T-130-2 toroid cores (with 63 turns) in the output filter of my 200W PA, which proved to be quite conservative for this power level. T-200-2 cores have proved adequate at
