[Amps] PWD 3amp/95uH plate choke/YC-156A on 160 meters

[k7rdx]

Hi Phil,thanks for the suggestion re the rfparts choke..Your`e right abt the 
interaction with the tank ckt...I can tell that when testing with my 
259b...Do you think the rfparts choke is robust enough for use with a 
YC-156?I recall it`s rated for a max of 4kv/1.5 amps...My supply is 
6400vdc... I have one in use here 3600vdc in my 8877 deck and it works 
great....Thanks agn for the comments..73,Jim..
----- Original Message ----- 
From: "Phil Clements" <philc at texascellnet.com>
To: "'k7rdx'" <k7rdx at charter.net>; <amps at contesting.com>
Sent: Wednesday, May 20, 2009 5:04 PM
Subject: RE: [Amps] PWD 3amp/95uH plate choke/YC-156A on 160 meters


>
>
> Subject: [Amps] PWD 3amp/95uH plate choke/YC-156A on 160 meters
>>
>> Would like some comments from YC-156A builders who may have tried the PWD
>> 3 amp 95uH plate choke on 160 meters.Works well for me 20-80 but a bit
>> squirly so far on 160...Not enough I? I understand a few 3x3 builders are
>> running two in series for 160 and switching one out for the higher bands.
>
> 95 uh is too little for 160 meters. There is interaction with the tank
> circuit. The easiest thing to do is to purchase an R.F. Parts or Ameritron
> choke. It is over 200 uh, and has no resonances in the ham bands. You will
> need a bypass C at the base of the choke of .01 ufd or so for 160m to keep
> RF out of the power supply components.
>
> (((73)))
> Phil, K5PC
>
>
>


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