[Amps] 10 DB increase
R.Measures
r at somis.org
Sat Feb 5 10:11:33 EST 2005
On Feb 5, 2005, at 4:25 AM, Radioal wrote:
>
> ----- Original Message ----- From: "R. Measures" <r at somis.org>
> To: "Radioal" <al.dolgosh at hamradio.org>
> Cc: <amps at contesting.com>; "Ian White, G3SEK" <g3sek at ifwtech.co.uk>
> Sent: Saturday, February 05, 2005 6:39 AM
> Subject: Re: [Amps] 10 DB increase
>
>
>>
>> On Feb 4, 2005, at 4:03 PM, Radioal wrote:
>>
>>> A 10 dB increase in power will be propagated as a 10 dB increase -
>>> regardless of the state of the ionosphere, antennas, locations, etc.
>>
>> I used to think that this was the case until I sold the original
>> Plywood Box/8170 amplifier. Even though I had measured the
>> amplifier's voltage-gain as x10 with an oscilloscope (20db
>> power-gain), but on the air, I measured 20 - 23db with my calibrated
>> S-meter. Other people with calibrated S-meters reported the same
>> crazy thing. Others who saw the 23db change said that Stanford
>> (University) Research Institute had observed something similar during
>> their ionospheric heating research project
>>
>>
>> Richard L. Measures, AG6K, 805.386.3734. www.somis.org
>>
>
> The ionosphere is not a parametric amplifier being pumped by solar
> energy - there are some weird theories floating around that have not
> been proven.
So why did a 20db amplifier deliver 23db during certain conditions and
20db at other times?
>
> Al - K8EUR
>
>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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