Most tube manufacturers specify a settle time to reach full emission and
temperature stability with thoriated tungsten filaments. They vary from
10-30 seconds and I prefer to err on the conservative side as the 572B
filament is rather fragile.
Carl
KM1H
----- Original Message -----
From: "Gary Schafer" <garyschafer@comcast.net>
To: "'jeremy-ca'" <km1h@jeremy.mv.com>; "'W5CPT'" <w5cpt@bellsouth.net>;
"'Amps'" <Amps@contesting.com>
Sent: Wednesday, January 23, 2008 7:32 PM
Subject: RE: [Amps] Warm up time for SB-200?
> What will make it better after 30 seconds than what it would be after a
> second or two of turning on the power switch?
>
> 73
> Gary K4FMX
>
>> -----Original Message-----
>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
>> Behalf Of jeremy-ca
>> Sent: Wednesday, January 23, 2008 12:06 PM
>> To: W5CPT; Amps
>> Subject: Re: [Amps] Warm up time for SB-200?
>>
>> Its prudent to allow about 30 seconds of on time before transmitting.
>> Instant on aint exactly instant.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "W5CPT" <w5cpt@bellsouth.net>
>> To: "Amps" <Amps@contesting.com>
>> Sent: Wednesday, January 23, 2008 11:18 AM
>> Subject: [Amps] Warm up time for SB-200?
>>
>>
>> > Is there a recommended warm up time for a Heathkit SB-200? The manual
>> does
>> > not say anything about it.
>> >
>> > Clint - W5CPT
>> > _______________________________________________
>> > Amps mailing list
>> > Amps@contesting.com
>> > http://lists.contesting.com/mailman/listinfo/amps
>> >
>>
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
>
>
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