Hello John,
Monday, October 19, 2015
Thanks John, yes it does help, much appreciated, but what I am still
unsure of is if my Scopematch, that shows voltage and current
waveforms, is also, on the current waveform, displaying antenna
current? Does it not "do the same job" as a current meter?
With apologies to Kev, who has never heard of anyone with so many LF
issues ;) I have had to run half power recently, as full power is
tripping the house RCD after a minute or so of transmitting. I am
ordering some FT-240-77 material toroids, and building an isolation
matching transformer, instead of the auto transforming coil, in the
hope it cures this domestically disharmonious issue! I also have a two
piece E core to try. The fact it also triggers the workshop alrm is
not so big a deal as I can at least turn it off when transmitting. Has
anyone else had issues with RCD's and LF?
Thanks again.
> Chris,
> The arrangement I have here comprises a 5A FSD RF ammeter between
> the transmitter and the antenna isolating transformer, and another
> such ammeter (switchable between 5A and 500mA FSD) between the
> isolating transformer and the earthy end of the antenna matching
> network.. The intended impedance at this point is 50 ohms.
> Hope this helps, John
--
Best regards,
Chris mailto:[email protected]
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