[Boatanchors] B&W 425 LPF?

[John Flood]

Looks like Bob has me beat by one unit!  Guess I'll have to keep working.  Looks like I'll hang on to it for my Vintage AM setup.  Unless.....  Could I convince the audiophools that they need one of these to keep stray VHF/UHF energy out of cables?????   I'm rich again!!!  Thanks for the input guys!


----- Original Message ----
From: Carl <km1h at jeremy.mv.com>
To: rbethman <rbethman at comcast.net>; boatanchors at mailman.qth.net
Sent: Thursday, July 17, 2008 4:52:21 PM
Subject: Re: [Boatanchors] B&W 425 LPF?

Ah, a castrated KW, not a real one! It takes a 5KW  ICE filter to safely 
handle a KW of carrier.  Im not quite there ....yet! Thats what the 304TL's 
are for, Ive almost given up on finding a like new pair of 6C21's or 750TL's

Carl
KM1H

----- Original Message ----- 
From: "rbethman" <rbethman at comcast.net>
To: <boatanchors at mailman.qth.net>
Cc: "Carl" <km1h at jeremy.mv.com>
Sent: Thursday, July 17, 2008 4:37 PM
Subject: Re: [Boatanchors] B&W 425 LPF?


>
>
> Carl wrote:
>> ----- Original Message ----- From: "rbethman" <rbethman at comcast.net>
>> To: <boatanchors at mailman.qth.net>
>> Sent: Thursday, July 17, 2008 2:57 PM
>> Subject: Re: [Boatanchors] B&W 425 LPF?
>>> John.
>>>
>>> I've got the model 425, 52 ohm lpf, s/n 100
>>>
>>> The 425 will take a full KW AM.
> Carl,
>
> 400W carrier, 2500W PEP to the antenna.  At least that's what the BC-610 
> or T-213 will do.  I've used both the B&W and a Bud LPF for this purpose. 
> Each is directly attached to the RF out connector.  Tuners and all else 
> comes after.
>
> I've run them since 2001 or before, can't remember when I went QRO AM.
>
> Bob - N0DGN
>>
>> 4KW PEP?
>>
>> I wouldnt push it that hard. The relabeled FL-1500 is rated 1500W CW and 
>> that assumes a very low VSWR. Ive arced them at 1200W into ~3:1
>>
>> Carl
>> KM1H
>>
>>
>>>
>>> Bob - N0DGN
>
> -- 
> Bob - NØDGN
>
> 

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