[Amps] The cost of amplifiers, radios

[Charlie Young]

My converted SB220 for 6 meters has more power output than it ever did in the stock configuration with the same tubes, 1300/1400 watts if pushed.


I don't run it there, typically use it at 1KW output.   My work is 99% CW and typically short DX type QSO's.   I would not attempt high duty cycle transmissions with the existing plate transformer without cutting the power output in half, at least.  Likely I would get another transformer or another amplifier if we ever attempt JT65.


My conversion was done by W1QJ.


73 Charlie N8RR


________________________________
From: Amps <amps-bounces at contesting.com> on behalf of Richard Solomon <dickw1ksz at gmail.com>
Sent: Tuesday, December 6, 2016 2:14 PM
To: amps at contesting.com
Subject: Re: [Amps] The cost of amplifiers, radios

1,300 Watts out at ~ 65% efficiency
equates to 2,000 Watts input.

Better save your nickels for that new
power xfmr you will soon need !!

I have heard these tales before of
folks claiming upwards of 1,500 Watts
out on an SB-220.

I file them away along with the photo's
I took of the Loch Ness Monster.

73 es HH, Dick, W1KSZ

On Tue, Dec 6, 2016 at 12:49 PM, Paul Baldock <paul at paulbaldock.com> wrote:

> I run an SB220 modified for 6M (single band). 1300W PEP out.
>
> - Paul
>
> At 09:13 AM 12/6/2016, Richard Solomon wrote:
>
>> I would think the efficiency on 6
>> would be rather poor.
>>
>> Three tubes in parallel ??
>>
>>  73 es HH, Dick, W1KSZ
>>
>> On Tue, Dec 6, 2016 at 10:01 AM, Paul Baldock <paul at paulbaldock.com>
>> wrote:
>>
>> > At 05:16 AM 12/6/2016, you wrote:
>> >
>> >> ##  legal limit here in canada is 2250 w pep out... measured at the
>> ant.
>> >>
>> >
>> >
>> > An even better reason than "the Donald" to move to Canada.
>> >
>> > My ideal amp would be and automated 3 x 3-500Z, 160m to 6m. $500 total
>> for
>> > brand new replacement tubes.
>> >
>> > - Paul
>> >
>> > _______________________________________________
>> > Amps mailing list
>> > Amps at contesting.com
>> > http://lists.contesting.com/mailman/listinfo/amps

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>> >
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>>
>
>
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