Question K3 ALC w/SPE Expert 1.3K-FA amp
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Re: Question K3 ALC w/SPE Expert 1.3K-FA amp
 
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On Fri, Apr 3, 2015 at 8:54 PM, Joe Subich, W4TV <[hidden email]> wrote:
> I challenge the FCC to > do something about it - to sanction both SPE and SPE's distributors > in the US. You think the FCC is reading the Elecraft repeater every day for content, looking for reports? You going to report it directly to the correct FCC personnel? 73, Guy ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Question K3 ALC w/SPE Expert 1.3K-FA amp
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In reply to this post by Elecraft mailing list
On Fri, Apr 3, 2015 at 6:56 PM, Milverton M. Swire via Elecraft <
[hidden email]> wrote: > Joe was just being Joe. > His reply had nothing to do with the OP original question.... > ============ So true. The question had to do with setting the K3's drive level. The off-topic posturing on this thread was, however, no more ridiculous than it was on the dummy load thread. Tony KT0NY ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by ha4zd
From the sound of the LID's on 20 meters, I would say more
CB'ers................................... Jim W6AIM -----Original Message----- From: Elecraft [mailto:[hidden email]] On Behalf Of István Szabó Sent: Friday, April 3, 2015 3:29 PM To: [hidden email] Subject: Re: [Elecraft] Question K3 ALC w/SPE Expert 1.3K-FA amp ARRL may initiate changing that law. Proud hams could drive that change. With current LDMOS devices lots of money can be saved with one stage amps. That change would accelerate switching from tube amps to technically much more advanced LDMOS amps. Less energy consumption, smaller shack space required. Another question is are there more hams in USA or CB operators? 73, István ha4zd On 04/04/2015 00:01, Oliver Dröse wrote: > > On a deeper level, to design an amplifier with that much gain is bad > design > > Huh? Why is that, Joe? We now have devices capable of 22 or even 30 dB > of clean amplification. Why should we not use it? Just because FCC > does not allow it in the U.S.? I'm not bound to FCC rules and I'd > rather prefer to drive such an amp with 1 or 3 watts from the KX3 to > get 1 kW out than to cascade the transceiver with a driver amp and > then a final amp. Of course I'm just bound to German law which does > not contain any "stupid" (pardon me, but it is!) amplification limits, > just the maximum allowed power. How we generate it is up to us radio > amateurs overhere. That also means responsibility, of course. :-) > > Happy Easter! > > Vy 73, Olli - DH8BQA > http://www.dh8bqa.de ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Question K3 ALC w/SPE Expert 1.3K-FA amp
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In reply to this post by Elecraft mailing list
"Joe just being Joe? I sure hope so -- he's a professional engineering
voice of sanity on a bunch of ham reflectors. Joe is a retired broadcast engineer. He is absolutely right -- everything he has said is VERY solid engineering. It's the way GOOD rigs are designed. It's the way Elecraft rigs are designed. Yes, it's ham radio, and FCC Rules require that our rigs use the minimum bandwidth required for mode being transmitted. A dirty transmitter occupies a lot more spectrum than a clean one. That dirty transmitter is using bandwidth that other hams may want to use. In contests, and DX pileups, signals are wall to wall. A CW signal SHOULD occupy only about 600 Hz to be 50 dB down, but MANY rigs occupy 4-5 times that. Ah, you say, 50 dB down is a lot. I respond, not if the signal is 40 over S9 -- 50 dB down is still S7! When we use more bandwidth than the minimum required, we as OPERATORS are in violation of FCC Rules. The only reason we get away with it is that the FCC has zero budget for enforcement. 73, Jim K9YC On Fri,4/3/2015 4:56 PM, Milverton M. Swire via Elecraft wrote: > WHY is everyone getting their panties in a wad?!!!!!! > Joe was just being Joe. > His reply had nothing to do with the OP original question. > > BTW. ....... The rule states " not to be Sold Commercially " > > IF! If the Amp was not bought from a local (USA) Commercial vendor, no harm was done. > He could have obtain it from another Lic Operator. There is no Rule stating he cannot have an SPE Expert 1.3K - FA Amp in his possession. > LIGHTEN up, this is a Hobby. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Question K3 ALC w/SPE Expert 1.3K-FA amp
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I look at plus and minus 250 Hz. That's because any wider than that is in
the passband of someone up or down. AND, particularly since K3's, people are starting to squeeze toward three operating spots in a kHz, rather than two. Happens all the time. That's plus and minus 167 Hz. That matches the "250" 8 pole roofer that is really 330. 73, Guy. On Fri, Apr 3, 2015 at 11:20 PM, Jim Brown <[hidden email]> wrote: > "Joe just being Joe? I sure hope so -- he's a professional engineering > voice of sanity on a bunch of ham reflectors. Joe is a retired broadcast > engineer. He is absolutely right -- everything he has said is VERY solid > engineering. It's the way GOOD rigs are designed. It's the way Elecraft > rigs are designed. > > Yes, it's ham radio, and FCC Rules require that our rigs use the minimum > bandwidth required for mode being transmitted. A dirty transmitter occupies > a lot more spectrum than a clean one. That dirty transmitter is using > bandwidth that other hams may want to use. In contests, and DX pileups, > signals are wall to wall. A CW signal SHOULD occupy only about 600 Hz to be > 50 dB down, but MANY rigs occupy 4-5 times that. > > Ah, you say, 50 dB down is a lot. I respond, not if the signal is 40 over > S9 -- 50 dB down is still S7! > > When we use more bandwidth than the minimum required, we as OPERATORS are > in violation of FCC Rules. The only reason we get away with it is that the > FCC has zero budget for enforcement. > > 73, Jim K9YC > > On Fri,4/3/2015 4:56 PM, Milverton M. Swire via Elecraft wrote: > >> WHY is everyone getting their panties in a wad?!!!!!! >> Joe was just being Joe. >> His reply had nothing to do with the OP original question. >> >> BTW. ....... The rule states " not to be Sold Commercially " >> >> IF! If the Amp was not bought from a local (USA) Commercial vendor, no >> harm was done. >> He could have obtain it from another Lic Operator. There is no Rule >> stating he cannot have an SPE Expert 1.3K - FA Amp in his possession. >> LIGHTEN up, this is a Hobby. >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Re: Question K3 ALC w/SPE Expert 1.3K-FA amp
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I look at the state of the art, which is currently represented by Elecraft.
On Fri,4/3/2015 8:48 PM, Guy Olinger K2AV wrote: > I look at plus and minus 250 Hz. That's because any wider than that is > in the passband of someone up or down. AND, particularly since K3's, > people are starting to squeeze toward three operating spots in a kHz, > rather than two. Happens all the time. That's plus and minus 167 Hz. > That matches the "250" 8 pole roofer that is really 330. My K3 driving a KPA-500 to 550W or Ten Tec Titan to 1500W is 420 Hz at -50dBC, 610 Hz wide at -60 dBC, as measured on my other K3 with SVGA. :) And that's with the original synth boards in both radios. New ones on order. :) This file is a work in progress. k9yc.com/P3_Spectrum_Measurements.pdf 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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