Please Gerhard, more details on your choke (medium size red Amidon core & two 220 uH Siemens chokes). Maybe I can use it for 160 meter antennas.
Your T1-1 measurements make sense according to my experience with these things. The "-6" series (T1-6, etc) has larger cores and should withstand more DC. (I like to take apart MCL stuff to see what is inside; very enlightening). I always use the -6 series for 160 meter work. Thanks, 73 Rick Karlquist N6RK On 12/7/2014 10:14 PM, Gerhard Hoffmann wrote:
Am 29.11.2014 um 20:01 schrieb Gerhard Hoffmann:
DG8SAQ VNWA, my best DC block from PSPL because it also has the lowest lower corner. It took some experimenting to find a choke that would not modify S21 and carry the current. Finally: a medium size red Amidon core & two 220uH Siemens chokes with a looong air gap.
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