Re: [Elecraft] K3 - ESSB Availability
Hi Joe. Yes, I am also awaiting this firmware update. I have not yet got my K3, but my hopes are that it will be ready soon. Right now I am also using the IC-756pro3, microphone are the TSM MT-57 dynamic, and I use the W2IHY equalizer into the rear ACC connector. I have also ordered a better microphone, the AV Leader STM-11 : http://www.avleader.com.tw/product_Studio%20Microphones.htm This one has a very flat frequency response and needs an equalizer to sound good. This one also needs +48V phantom power, I have the small LEEM PHW-22 phantom power supply. This one is cheap, and it has selectable +48V or +12V. This is what amateur radio is all about for some of us, not just getting a message thrue but making it sound as good as possible. Best regards LA4AMA Roar Joe Word wrote: Any update on when the ESSB function will be turned on in the firmware? I am using the 2.7 filter with various dynamic microphones and getting good audio reports, but not as good as I get from my Icom 756 PRO III. Would like to try a little wider bandwidth (about 3.0) and see if I can match the PRO. Will need the 6.0 filter of course. The various dynamic mics I am using have gotten excellent audio reports using rigs like the Yaesu Mark IV, Kenwood TS-870 and etc. I have had three different people view my transmit bandwidth on their spectrum scopes and confirmed that my 2.7 filter is in fact transmitting at 2.7 bandwidth (not 2.9 as previous thought). Joe N9VX K3 #841 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- View this message in context: http://www.nabble.com/K3---ESSB-Availability-tp17537003p17555896.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] DVR release date
Hi. I am awaiting my new K3 but I wanted it to be shipped with all the options including the DVR (Digital Voice Recorder) installed, so I have to wait. Are there any news on the progress/release date on the DVR ? Best regards LA4AMA Roar -- View this message in context: http://www.nabble.com/DVR-release-date-tp17100349p17100349.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 FIRMWARE UPDATE: MCU 1.87, DSP 1.69 (Finally!)
* SSB TRANSMIT BANDPASS EXTENDED AT LOW END. Improvement is about 2 dB at 300 Hz, 3 dB at 200 Hz, and 6 dB at 100 Hz. Can this be made optional? Excess LF response only wastes power at low frequencies and occupies excess bandwidth. We could add a menu entry for this -- it's on the list. Meanwhile, the low end is rolled off a bit in hardware, too, so in practice I don't think you'll have any problems with this. Hi. At what frequencies are the low end rolled off in hardware ? I think it should be as flat as possible and then rolled off by the microphone (low-cut switc etc.) or the TX eq. The TEN-TEC Omni VII for instance has a menu for TX roll-off (70-300Hz). Adding this will be a fine way for users to set the TX roll-off to the point they want. The only thing one must remember with the Omni VII is that if you set the TX bandwidth to 2400 Hz and the TX roll-off to 70Hz it will sound too muddy. Then one must move the TX roll-off to around 200Hz to cut off the low end. This also add's the 200Hz you set in the TX roll-off to the upper side of the passband (moving it from 2470Hz to 2600Hz). This way the TX bandwidth is still 2400 Hz, and the TX frequency passband are 200Hz - 2600Hz. Alternativly, one can have one single SSB TX bandwidth menu who cuts off at specified frequencies: 2400 Hz : 300 - 2700 Hz 2600 Hz : 200 - 2800 Hz (default?) 2800 Hz : 200 - 3000 Hz 3000 Hz : 100 - 3100 Hz (requires 6kHz IF filter) 3500 Hz : 70 - 3570 Hz (requires 6kHz IF filter) 4000 Hz : 50 - 4050 Hz (requires 6kHz IF filter) This is maybe easier and more user friendly as it cuts off the low end as well, and it's easier to get a good sound without adjusting several menu's. Having a bit more low end and more bandwidth is fine when using 10m or 6m locally for ragchew on a quiet band. Best regards LA4AMA Roar -- View this message in context: http://www.nabble.com/K3-FIRMWARE-UPDATE%3A---MCU-1.87%2C-DSP-1.69---%28Finally%21%29-tp17041394p17053977.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Bass in audio is good
Most HF users want AM and ESSB (occupied bandwidth greater than required for communications quality - 2.6 to 2.8 KHz) banned. Unfortunately, certain special interest groups continue to drive the debate. Hi. There are also a lot of radio amateurs that are concerned about the fact that such restrictions in bandwidth will harm the experimenting part and freedom within amateur radio. Radio amateurs has always been experimenting with different microphones etc. trying to make it sound as good as possible. That is a part of what amateur radio is all about (for some). Implementing strict commercial bandwidth limitations within amateur radio is not a good idea. My view is that as long as we try to make our transmitted signals as clean and splatter-free as possible there should be no problems. When i tune across the bands I see a lot of distorted splatter stations on the spectrum scope on my IC-756pro3, especially on 20m. This is because a lot of radio amateurs use way too much microphone gain (high ALC-action) and/or compression/processing resulting in very wide occupied transmitter bandwidth. This is also consistent with the findings of SM5BSZ, Leif Asbrink. Check his articles here: http://www.nitehawk.com/sm5bsz/dynrange/alc.htm http://www.nabble.com/file/p17066871/russian%2Bstation%2Bsplatter%2B1.jpg wide splatter station on 20m My experience is that all these splatter stations are a lot bigger problem than if someone transmits with 3,0kHz or 4,0kHz in SSB. If one shall focus on bandwidth, one must go for the area where something should be done. Maybe a lot more education is needed for new radio amateurs (during licensing) regarding ALC-settings and checking transmitted signals on a spectrum scope to avoid splatter. Some improvements has been done in recent years since many radios now uses Digital Phase Shift Network modulation in SSB (DPSN). This also gives better opposite sideband suppression. The transmitted signals are more brick wall than on some older equiptment I think. Going from 2,8kHz to 4,0kHz TX bandwidth on the Omni VII does not create a very wide signal as long as it is clean and not distorted. Too much ALC-action will create splatter regardless of IF-filter bandwidth. http://www.nabble.com/file/p17066871/Omni%2BVII%2Bwith%2B4kHz.jpg the Omni VII with 4kHz SSB TX There are also facts like some radio amateurs have problems with hearing loss, cutting away the audio to a narrow range (200-2800Hz) will make it difficult to read for some people. The area between 100Hz and 4kHz are the most important for the human ear. This can be confirmed by several scientists working with speech intelligibility research : http://www.polycom.com/common/documents/whitepapers/effect_of_bandwidth_on_speech_intelligibility_2.pdf That is why I hope such bandwidth limitations within amateur radio never will be implemented. Best regards LA4AMA Roar -- View this message in context: http://www.nabble.com/Bass-in-audio-is-good-tp17053403p17066871.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Bass in audio is good
I am surprised to hear that people don't like the extra bandwidth in the audio response in the K3. For me I have been reluctant to check into a regular rag chew net until I could have some extra low frequency response. I knew that the K3 wouldn't measure up and I didn't want the K3 to be seen in a poor light. Yes I am quite familiar that this is the opposite of good dx performance but these guys don't care about dx at all. They care about comfortable listening. I of course care about dx when I want it and rag chew when I want it. Now I can have both. AM sounds so much fuller now also. I wouldn't want it any other way. Mike Scott AE6WA Tarzana, CA K3/100 SN508 - Hi Mike! I agree with you. I also like the more full audio and I really would hate to see the K3 restricted in hardware or software. Adding a SSB TX bandwidth menu for adjusting this to each users preferences would be fine: 2400 Hz : 300 - 2700 Hz 2600 Hz : 200 - 2800 Hz (default ?) 2800 Hz : 200 - 3000 Hz 3000 Hz : 100 - 3100 Hz (requires 6kHz IF-filter) 3500 Hz : 70 - 3570 Hz (requires 6kHz IF-filter) 4000 Hz : 50 - 4050 Hz (requires 6kHz IF-filter) One can also use a microphone with low cut (the Kenwood MC-90 is great and fits directly on the K3 without re-soldering the 8-pin connector). This one has a low cut with 2 positions, and it has a great audio response for SSB. It is a 250 ohm dynamic microphone with two replaceable microphone heads. For ragchew on a quiet band it is nice to have some more low end and bandwidth. Best regards LA4AMA Roar -- View this message in context: http://www.nabble.com/Bass-in-audio-is-good-tp17053403p17053999.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Perfect K3 Speaker
Hi Bruce, For communications bandwidths, a sturdy 4-ohm, 3 or 4 diameter mobile speaker (non-powered) does a great job. For a bit more fidelity and to take advantage of the K3's stereo speaker outputs, I use a pair of good quality bookshelf-style speakers (again, non-powered). Right now I'm using Best Buy's Insignia, 4-inch, 3-way surround speakers, which sound quite good, although they're 8 ohms rather than 4 so the available per-channel peak power will be lower. They're about 4W x 8H. I had been using just a single speaker, but having two allows me to get L/R separation of the main and subreceivers, as well as take advantage of the K3's AFX simulated stereo mode. 73, Wayne N6KR Hi. I am awaiting my K3 to be ready including all the options I ordered (DVR etc.). I am planning on connecting two small bookshelf speakers (Proson Sat 51RR) who have excellent audio. I am currently using these on my IC-756pro3, and they sound a lot better than any amateur radio speaker. If one really wants to reveal the details in the received audio I can recommend the AKG HSD-271 headset (with dynamic microphone). These are outstanding in every way, and sounds incredibly clear and neutral. The electret mic version of these are the HSC-271. Best regards LA4AMA Roar -- View this message in context: http://www.nabble.com/Perfect-K3-Speaker-tp17041953p17054004.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
