Re: R: Re: LF: TX > RX isolation test

[Roman <rw3adb@YANDEX.ru>]

Excuse LF Group, hi Laurence!

Trying t emal you directl,bu nothing.
I need CFM own OPERA QSO's in qrz.com an eqsl.cc!
PSE CFM Alaska is a great DX in Moscow!
I need it for awards.

73!
Roman

> I can confirn the ruggedness too - close thunderstorm strikes using the 
> pa0rdt probe in Ghana, Singapore, Namibia, Malaysia, Fiji, Indonesia and 
> China etc all failed to destroy. Only one time the device failed was a very 
> very close strike on the same tree as the probe was stationed Oklahoma!
> 
> Laurence
> 
>> On Jul 16, 2018, at 11:54 AM, Roelof Bakker <roelof@ndb.demon.nl> wrote:
>>
>> Hello Marco,
>>
>> The J310 is a sturdy device.
>> In a strong RF field the gate starts to conduct and the gate voltage does 
>> not rise any higher.
>> The device protects itself so to speak.
>>
>> Due to the small size of the 'PCB-antenna' of 30 x 40 mm, voltage build up 
>> due to nearby
>> thunderstorms is low compared to e.g. a 1 meter long whip antenna. Hence 
>> reports of defunct
>> antennas due to lightning are rare.
>>
>> The most common cause of failure is accidentally sending 100 W RF or more up 
>> the feed-line!
>>
>> 73,
>> Roelof, pa0rdt
-- 
73!
Roman, RW3ADB