OK on all the thread. Ed, Yes, I am interested in following your linear amplifier project.
73, tom w7sua On 7/27/2015 10:43 AM, Edward R Cole wrote:
To catch up on the comments I address all that I have so far: Re: linear vs class-C is really a moot point as its easy enough to build a linear at 500-KHz. CW, JT65, FSK all do fine with class-C, of course. And its true that any modulation of a continuous carrier will impart some bandwidth. Its not likely that wide-band digital modes will be approved in a band that is only 7-KHz wide so probably those approved would work with a class-C amp. I think its just simpler to provide class-AB then its a non-issue. Re: 15-dB HF linear amp gain limit. If that is applied to 630m amps then either I sell a kit or partial kit. 1mw in to 1w out is 30-dB and 100w out is 50-dB. I would have to research the regs to see if the limit is for a certain level of input (like 5w). Also the regs allow hams to sell amps to other hams without this restriction (but at what quantity per year?). First off I am not proposing to go into competition with MFJ. This is just a home business building one at a time. If the FCC is going to make this a small (tiny) business killer than its just not worth the bother. If I say more than this it will get political and that is OT. 73, Ed - KL7UW
______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
