[CQ-Contest] ICE 419 Schematic (A vs B?)

[Mark]

while we're on this topic, does anyone know the difference between the 
ICE 419, 419A and 419B?

Mark n2qt

----- Original Message ----- 
From: "Dave Hachadorian" <K6LL at ARRL.net>
To: "cq-contest reflector" <cq-contest at contesting.com>; <n3rd at arrl.net>
Sent: Sunday, July 27, 2008 3:54 PM
Subject: Re: [CQ-Contest] ICE 419 Schematic


> You're right. The question comes up every few years, and 
> nobody has ever produced a schematic.
> 
> If you slide the unit out of the case, you can easily see 
> how it is put together. Basically, there are 6 bpf's in 
> series. The ones that are not activated are bypassed by 
> normally-closed relay contacts. The bpf that IS activated 
> has the relay pulled in, putting the filter in line. The 
> discrete components for each bpf are easily visible, and can 
> be easily worked on.
> 
> I have the capacitor values if you need them.
> 
> Dave Hachadorian, K6LL
> Big Bear Lake, CA
> 
> 
> 
> ----- Original Message ----- 
> From: "Dave Hawes" <dave.n3rd at verizon.net>
> To: <cq-contest at contesting.com>
> Sent: Saturday, July 26, 2008 4:51 PM
> Subject: [CQ-Contest] ICE 419 Schematic
> 
> 
>> This question seems to come up every few years, and it's 
>> been a
>> while, so I'll ask.
>>
>> Can anyone supply a copy of the ICE 419 schematic diagram?
>>
>> I have the external connections, but need to see how it's 
>> wired
>> internally.
>>
>> Thanks and 73 - Dave N3RD
>> _______________________________________________
>> CQ-Contest mailing list
>> CQ-Contest at contesting.com
>> http://lists.contesting.com/mailman/listinfo/cq-contest 
> 
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