TL;DR
Sent from my mobile device > On Jul 24, 2018, at 12:58 PM, Wes Stewart <[email protected]> wrote: > > I wish I could understand all of this. > >> On 7/24/2018 6:58 AM, Arthur Nienhouse wrote: >> */I will agree with everything said pasted below but for one thing which is >> Fan Noise I'm a rag chewer around 30 wpm QSK the fan will ratchet up to >> speed 3 after a few minutes of keying so the fan noise is very a subjective >> opinion not right not wrong just is, being fair in my assessment mine is >> built from a kit when they first came out. >> >> By the way as an Icom owner of both the 7300 now parked unplugged and for >> sale and the 7610 the cw qsk is better in the 7610 but the K3 is my choice >> for split frequency DX QSK exchanges over both of the Icom radios the 7610 >> is a big improvement how ever I find it clumsy to work Split listening up >> stuff .... the Internal Keyer in the K3 is much better there is a better >> range of adjustments available in the Elecraft internal keyer ....would I >> like to see it like the Supper CMOS 3 keyer choices heck yes ....Icom gives >> you little choice my fist after a lot of practicing and paying attention is >> better with the Icom but not as good as the Elecraft Mode A Mode B is most >> important choice but even more choices would be nice like the length of >> (each element) not just the spacing between each element. >> >> One important discovery the 7610 muted VFO A from a S9 signal just up the >> band on vfo B while chasing the Baker Is DX-Pedition it took me a while to >> (find) out this is what was going on wanting to master the listening up pile >> up with the 7610 and only one VFO knob takes getting used to the cw monitor >> side tone is 5 taps deep in the menu to change I can not hear it well enough >> even set at 100% you have to turn down the RF gain making the guy on the >> island weaker copy then turn up the AF gain making the side tone for my fist >> louder so I can hear what I'm doing on the paddle, (self defeating) and >> *stupid* The cw side tone is tied to the *flipping* AF gain not separate >> like in the K3..... *stupid*. If you can't hear the island on one VFO >> because a big signal is a couple cycles up push his button never listening >> to *hear the guy on the island* who he is working or know if he is calling >> Mr button pusher that kind of qrm is not necessary nor productive to the run >> rate. Mr button pusher was not working QSK was he waiting for a computer to tell him the island is calling????? >> You can't fix *STUPID*..............front end muting from a big signal near >> by is a problem. Now change to head phones you ears get blown up by the side >> tone level needing 5 taps deep in the menu then adjusting it even one more >> time *stupid* at the very least this adjustment needs to be in the MULTI >> button empty spot menu ...........like it is for SSB don't hold your breath >> waiting to Icom to fix this over site. >> Both radios drive the KPA500 well the hook up is straight forward easy to do >> QSK relays perfect the best. >> Oh yea Icom needs a menu setting SPK+Phones, a rear plug for 3.5 Mic input >> and 3.5 Elec-Key input. >> >> Back to Baker Is DX I finally gave up switched to the K3 bam in the log >> ...... You get what you pay for there is a lot to like with the 7610 a lot, >> many features you don't get with the base set up in many other radios the >> price is really good but if you want to race Pro Stock it is not cheep >> performance counts and cost.... >> >> Not sorry.. never have been on my choice I have put a helper fan on top to >> push air as soon as the amp comes on cooling it from before key down lower >> start temp. My shack is hottest room in the house the station is in a corner >> the helper fan is a Noctua fan NF-a9x14pwm low profile. To be fair a TV is >> always going two computers big monitor all making the room hotter. I get a >> couple more minutes till the temp runs to 65c kicks speed 3 on which is my >> time out timer to turn it over, the equipment is also stacked to save space >> I found that at full song speed 3 kicks in if I'm in the middle of some >> sentence and keep going the fan will run at speed 3 then go back to speed 2 >> .....be nice to set the on set of speed 3 a bit higher in the tempeture >> range. This amp is well built really does the job I'm happy happy happy, and >> yes my Z bracket has the correct length hold down screws it will click when >> cooling down ( not always ) not real objectionable for me the fan noise more >> annoying. The screws were re-tightened after a heat cycle one at a time like >> you do with race engines. >> >> I also took the advice to run the amp to its limit not at 400w out it does >> seem the final is most efficient and running a tad cooler and longer before >> speed 3 which is annoying and to be avoided in my opinion. >> The helper fan starts things from a cooler lower temperature as well giving >> a bit longer run time to speed >> speed 3 another thing that can be done which I did before the helper fan is >> run speed 1 at turn on keeping the idle temp lower. >> >> The Quadra has been in stand by ever since the KPA500 made it debut plugged >> in and doing its timed maintenance mode, running the relays and noisy fans. >> I would switch between them, now its not even plugged in I do not see the >> need for what I'm doing....say that to say this I just might get the new >> 1500 if I can sell the Quadra ( new 1998) never an inrush current problem >> first run second version was the best, the only problem replaced the 4 meter >> lights a few years ago. Elecraft ATU is so good compared to the Quadra with >> RF sniffing power needed is a speck in the ocean compared to the 50 watts >> into a perfect load Mr Quadra want's to see. >> >> Regards >> Art >> ka9zap >> >> /*After much investigation and consideration I elected to purchase the >> KPA-500/F. Since I have the K3S and now the KAT-500, I've "trained" the >> KAT-500 for the antennas and frequencies on each band. With the VFO >> tracking, I dial the frequency and everything follows. >> >> Specifically the KPA-500 I find to be very quiet, it delivers 500 watts + on >> every band, 160 - 6M. Drive power is about 25 watts on every band. The fan >> is quiet and is of no concern even at the highest speed. It does step down >> quickly as the amp cools. Normally the fan is off until the temperature >> rises. Using it on FT-8 at 500 watts out, it will increment to #2 on >> occasion. The input always appears as a 1:1 SWR to the transceiver. >> The high SWR circuit does protect the amp and is fast. With my station >> configuration I feel as though I have a 500 watt transceiver, automatically >> selecting antennas and tuning as needed. I touch nothing but the VFO knob >> or enter the frequency for the next band. Everything switches silently and >> automatically. >> >> I come from a line of tube amps in the 1000 to 1200 watt class. Fans run all >> the time. Power output varies with band as well as drive requirements. >> Most seem to be optimized for 20M. My last tube amp was a AL-80B and it >> was one of the smoothest tuning amps I've used. Power out always 1000 + >> watts. But it required tuning with each frequency and band change. >> >> The difference in power is 3 dB or only 1/2 S unit. All works for me. I >> vote for the KPA-500. > > ______________________________________________________________ > 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] ______________________________________________________________ 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]
