Re: OT: modifying your amp for lower drive requirement
Posted by
Scott Ellington on
Dec 21, 2010; 6:41pm
URL: http://elecraft.85.s1.nabble.com/OT-modifying-your-amp-for-lower-drive-requirement-tp5854009p5857542.html
Of course, 20 dB of gain is not legal in the US, at least for commercial amplifiers, so it makes sense that Ameritron would use an attenuator, as it also saves them the cost of a matching transformer.
Scott K9MA
On Dec 21, 2010, at 12:08 PM,
[hidden email] wrote:
> This is exactly right. The MRF150 MOSFETs used in ALS600 are rated at 20dB. I know people who homebrewed similar amplifier without series resistor and have full 20dB of gain - no problem whatsoever, stable like a rock.
Scott Ellington
Madison, Wisconsin
USA
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