[Boatanchors] B&W 425 LPF?

[Carl]

That may be the amp we had at NAS Olathe back in the early 60's. PP 1500T's 
modulated by 1000T's.

The ham station was a 32V2 to a modified BC-610. Antennas were Telrex 6 el 
for 15/20M. Across the room was the monster amp which often was used on MARS 
and sometimes on 20M to clear a hole when running 20M phone patches.

Do you remember the model #? It was in either 2 or 3 cabinets.

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 5:12 PM
Subject: Re: [Boatanchors] B&W 425 LPF?


> Carl,
>
> I live too close to folks that do significant monitoring.  I'd rather run 
> a "castrated KW" than nothing at all!  A couple of us DID have a line on 
> the Army 5KW amps made for the BC-610s.....
>
> (Considering today's electric bills, don't think I'd run it even IF I 
> snared one!)
>
> Bob
>
> Carl wrote:
>> 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
>>>
>>>
>>
>> _______________________________________________
>>
>
> -- 
> Bob - NØDGN
>
>