[Elecraft] K3 Shipping Costs to Australia
For all you guys in the US, I have listed below the alternative shipping costs for my K3 order which I'll place soon. I live in South Australia. US Postal Priority Mail International = $131 US Postal Priority Mail International = $164 UPS Worldwide Expedited = $372 UPS Worldwide Express = $410 How risky is it to use the US Postal service? I'm worried about the delivery taking a month or two and the package arriving in more bits than when it was sent. Thanks, Shane VK5ABQ -- View this message in context: http://www.nabble.com/K3-Shipping-Costs-to-Australia-tp18111660p18111660.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] K3: Choosing which filters to buy
1. I plan to configure my K3 with the following filters - Stock 2.7KHz KBF3 General Coverage RX Filter Module AM 6KHz FM 12KHz CW 400Hz 8 pole (uncertain about this filter) Not having much CW experience and my current radio only using a 2.7KHz wide filter for CW (Rx only), I'm not sure which narrow filter to equip the K3 with. What's recommended for someone who will only use CW intermittently and not for contesting? (General purpose use I suppose). It's worth mentioning that I'm yet to learn morse but certainly appreciate it's worth and plan to use it. Are those filters I've listed above all I can fit in the K3's main receiver? I think I read that it had 5 filter slots. I'm not sure if the KBF3 fills one of these slots. If not, should I consider an alternative additional filter? 2. Can users distinguish the difference between the 2.7KHz 5 pole filter and the 2.8KHz 8 pole filter when using the K3? I understand the skirts of the 8 pole filter's passband will be steeper but is this noticeable? Thanks, Shane VK5ABQ -- View this message in context: http://www.nabble.com/K3%3A-Choosing-which-filters-to-buy-tp18111978p18111978.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: Choosing which filters to buy
Joseph I plan to use the FM filter to receive local medium wave AM broadcast stations (switch in the 12KHz FM filter and then use the DSP to reduce the IF bandwidth to 9KHz or so). I can listen to nice audio while having breakfast each morning then. Thanks, I had overlooked the filter for digital modes. Joseph M. Durnal wrote: Even if you don't use CW very often, you may find the 400 hz filter useful for digital modes. You don't have to get all of the filters right away of course. I'm not sure I'll ever get the FM filter, because I just can't see myself using a K3 for FM. My K3 only has the 2.7 kHz and the 400 Hz filters so far. 73 de Joseph Durnal NE3R On Wed, Jun 25, 2008 at 9:05 AM, Shane White [EMAIL PROTECTED] wrote: 1. I plan to configure my K3 with the following filters - Stock 2.7KHz KBF3 General Coverage RX Filter Module AM 6KHz FM 12KHz CW 400Hz 8 pole (uncertain about this filter) Not having much CW experience and my current radio only using a 2.7KHz wide filter for CW (Rx only), I'm not sure which narrow filter to equip the K3 with. What's recommended for someone who will only use CW intermittently and not for contesting? (General purpose use I suppose). It's worth mentioning that I'm yet to learn morse but certainly appreciate it's worth and plan to use it. Are those filters I've listed above all I can fit in the K3's main receiver? I think I read that it had 5 filter slots. I'm not sure if the KBF3 fills one of these slots. If not, should I consider an alternative additional filter? 2. Can users distinguish the difference between the 2.7KHz 5 pole filter and the 2.8KHz 8 pole filter when using the K3? I understand the skirts of the 8 pole filter's passband will be steeper but is this noticeable? Thanks, Shane VK5ABQ -- View this message in context: http://www.nabble.com/K3%3A-Choosing-which-filters-to-buy-tp18111978p18111978.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 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%3A-Choosing-which-filters-to-buy-tp18111978p18112829.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: Shipping Costs to Australia
Hey we have electrons here too you know. They deserve as much chance as U.S. electrons to power a radio. You guys a just jealous that we're now a fatter nation than you. Gregg R. Lengling wrote: No but it goes down the drain anti-clockwise. Gregg R. Lengling, W9DHI Administrator http://www.milwaukeehdtv.org http://forums.ham-radio.ch/ - Original Message - From: nz0t [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Wednesday, June 25, 2008 9:16 AM Subject: Re: [Elecraft] K3: Shipping Costs to Australia Does it have to be shipped upside down to work properly in Australia Shane White wrote: For all you guys in the US, I have listed below the alternative shipping costs for my K3 order which I'll place soon. I live in South Australia. US Postal Priority Mail International = $131 US Postal Express Mail International = $164 UPS Worldwide Expedited = $372 UPS Worldwide Express = $410 How risky is it to use the US Postal service? I'm worried about the delivery taking a month or two and the package arriving in more bits than when it was sent. Thanks, Shane VK5ABQ -- View this message in context: http://www.nabble.com/K3%3A-Shipping-Costs-to-Australia-tp18111660p18113626.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 -- No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.4.1/1516 - Release Date: 6/24/2008 7:53 AM ___ 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%3A-Shipping-Costs-to-Australia-tp18111660p18113846.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: Shipping Costs to Australia
G4ILO wrote: I didn't get the option of using the postal service here to the UK because the maximum insurance was not enough to cover the value of the shipment. I assume that you just looked at the website, which doesn't understand this, rather than contacting Elecraft Sales direct. That seems odd considering I had to enter my country and post code. Wouldn't this make the quotes provided meaningless? -- View this message in context: http://www.nabble.com/K3%3A-Shipping-Costs-to-Australia-tp18111660p18123906.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: Synchronous AM Receive
WW2PT wrote: Yeah, well... it had better be soon. Us SWL natives are getting restless! ;-) (We tease because we love...) Paul WW2PT Yes and I'm having trouble justifying $12,500 for an IC-7800 (which also has synch AM RX). I've been told though that the IC-7700 doesn't have synch AM. Does anyone here disagree with this? I reckon I could almost justify the money for that. -- View this message in context: http://www.nabble.com/K3%3A-Synchronous-AM-Receive-tp17959523p18020330.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: Synchronous AM Receive
WW2PT wrote: Wasn't me who said it! I know little about the 7800. But I have seen specs online that indicate Synchronous AM mode (here for example: http://tinyurl.com/43yz2g), but no mention of it on the Icom web site or in the English brochure that I have. As for the K3... I can (but won't) name a handful of radios with bad synchronous AM detection, and only a few that implement it effectively. I'm banking on my belief that Elecraft can and will do it right if it isn't rushed. Right, Lyle? ;-) Paul WW2PT My local Icom agent rang Icom Hong Kong yesterday who told him that the IC-7800 uses synchronous AM receive automatically. You can't engage or disengage it. They also told him that the 7800 is the only Icom radio to incorporate synchronous AM. I find it hard to believe that the 7700 doesn't feature it though considering it's new. Shane VK5ABQ -- View this message in context: http://www.nabble.com/K3%3A-Synchronous-AM-Receive-tp17959523p18022156.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] K3 Filters
Found the following text at http://www.zerobeat.net/mediawiki/index.php/K3_Suggested_Configurations AM filter $120. FM Filter $120, not yet available as of February 2008. Also, the firmware as of Feb 2008 is not ready to allow the 15khz roofing filter to work with modes other than FM. Is this still the case? I plan to buy a K3 soon and will want to be able to use a 9KHz bandwidth in AM mode. -- View this message in context: http://www.nabble.com/K3-Filters-tp17994927p17994927.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: Synchronous AM Receive
Shane White wrote: Any progress on this yet please Elecraft? VK5ABQ. Any idea whether the synchronous AM receive capability will require hardware mods or will it solely be a firmware modification? If hardware mods are required I would rather wait to buy a K3 considering the radio would need to be sent back from Australia. -- View this message in context: http://www.nabble.com/K3%3A-Synchronous-AM-Receive-tp17959523p17995206.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] K3: Synchronous AM Receive
Any progress on this yet please Elecraft? VK5ABQ. -- View this message in context: http://www.nabble.com/K3%3A-Synchronous-AM-Receive-tp17959523p17959523.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 IF Design
Thanks Bill. It's amazing to learn where Icom and Yaesu place their priorities. I suppose they have chosen a different compromise between style and substance than Elecraft. Icom and Yaesu's brochures and radios are adorable though. Shane. -- View this message in context: http://www.nabble.com/K3-IF-Design-tp17418075p17424552.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] K3 IF Design
When considering the differences between the K3 and IC-7800/7700/756PRO3 or FTDX-9000/2000, apart from the K3's lack of band-scope, numerous large knobs and colour screens, the other thing that stands out is the selection of the 1st IF frequency. Most other radios use a VHF 1st IF (typically about 70MHz) whereas the K3 has been designed to use 8MHz. Icom and others point out that a VHF IF allows their radios to obtain superior image rejection. This is done at the expense of non-ideal filter bandwidths though, as it's difficult to design narrow filters at around 70MHz. I think the K3 manages to provide 1st IF filter bandwidths of just 400Hz doesn't it? Does anyone have a useful link to the definition of image rejection? Does the K3 manage to obtain image rejection comparable to Icom's and Yaesu's flagships? If so then it seems to me that Icom and Yaesu seem to be relying on a proven RF design and instead are concentrating their current efforts on ergonomics and presentation. There's nothing wrong with that though. Thanks, Shane VK5ABQ South Australia. -- View this message in context: http://www.nabble.com/K3-IF-Design-tp17418075p17418075.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 IF Design
Thanks Dave. I'll read your review. Having been out of HAM radio for over a decade, I'm just trying to understand where each company involved in selling radios is heading and what their priorities are. Dave G4AON wrote: Shane In the case of 14 MHz and the K3, the first IF is 8.215 MHz. An oscillator at 22.215 MHz mixes with 14 MHz to give the difference frequency of 8.215 MHz, however there is another difference of 14 MHz minus 8.215 MHz which is 5.785 MHz which is the image frequency. The ratio in dB between the wanted frequency and the image gives the image rejection. There are other images involving the 2nd IF of 15 KHz too. With the K3, the main images are greater than 70 dB below the wanted signal. My own measurements give figures of 70 dB on 28.1 MHz (worst case) to better than 110 dB on 1.8 MHz and 50 MHz. The big advantage of a low 1st IF is the ability to use narrow roofing filters to reject nearby interference. The disadvantage is potential for poorer image rejection. Image rejection is only one aspect of a transceiver design, of model A was better in all respects than model B (and was cheaper) everyone would buy model A, but life isn't so simple! 73 Dave, G4AON http://www.astromag.co.uk/k3/ Does the K3 manage to obtain image rejection comparable to Icom's and Yaesu's flagships? If so then it seems to me that Icom and Yaesu seem to be relying on a proven RF design and instead are concentrating their current efforts on ergonomics and presentation. There's nothing wrong with that though. Thanks, Shane VK5ABQ ___ 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-IF-Design-tp17418898p17418993.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] The K3 in comprison to the Big Guns
Thanks Simon. I will. Simon Brown (HB9DRV) wrote: If you read the eHam.net reviews for the IC-7700 one thing stands out: 'Build Quality', followed by ergonomics, people are willing to pay for this. http://www.eham.net/reviews/detail/6708?page=1 - well worth reading. I would willingly pay a lot for a K3 in a 19 case. Simon Brown, HB9DRV -- From: Bob Serwy [EMAIL PROTECTED] Maybe you need to ask Icom and Yaesu why they charge so much for their rigs. ___ 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/The-K3-in-comprison-to-the-Big-Guns-tp17267266p17273992.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: Comparison to Big Guns
Thanks Ken but I don't understand your last paragraph. What makes the IC7700 more capable in SSB mode than the K3? Shane, VK5ABQ. Ken-99 wrote: The K3 has a different receiver design. Its first IF is 8,215 Mhz while the IC-7700, IC7800 has an IF that is near 75 Mhz. The result is that roofing filters can be built for 8,215 Mhz that have smaller and pass, since trying to build a 200-500 cycle filter for the higher freq is impossible or extremely expensive using current technology. SO... the design of the K3 and Orion allow the roofing filters that are key to their performance. The higher first IF used in the Icom rigs has an advantage of fewer images. That is their key disign criteria, rather than a sharp roofing filter. As a result, I would say the K3 is the performance choice for CW and digital, where as the Icom rigs with all the bells and whistles are the SSB operator's dream. It sure is pretty'! Ken K5WK ___ 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%3A-Comparison-to-Big-Guns-tp17273600p17274699.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] The K3 in comparison to the Big Guns
I think that's an unreasonable statement Joe. Please have another read of my initial post. I didn't make any such assumption, I merely questioned the relative cost and performance of some radios. No 73's for you. Shane. Joe Stofko-2 wrote: Hi Dave, Right you are! Actually, Shane's thinking is a bit flawed. He equates performance with product price and weight. Joe - W1AIU -- View this message in context: http://www.nabble.com/The-K3-in-comprison-to-the-Big-Guns-tp17267266p17275630.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] The K3 in comprison to the Big Guns
That's it, I'm going to ask the silly question. How can the K3's receiver outperform that of the Icom IC-7800 and Yaesu FTDX9000? These two radios cost in excess of $11,000 and weigh in at over 25Kg (55lbs)! The K3 costs about $2000 and weighs about 4Kg (8.5lbs). Yes the K3 is deficient of a screen, internal PSU and some knobs but why on earth is there such a difference in price and weight? Given this, how can the K3's receiver outperform these other radios? These questions keep bugging me. Those glossy Yaesu and Icom brochures certainly don't help! -- View this message in context: http://www.nabble.com/The-K3-in-comprison-to-the-Big-Guns-tp17267266p17267266.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] 9KHz AM IF Bandwidth
Is this available yet please Elecraft? -- View this message in context: http://www.nabble.com/9KHz-AM-IF-Bandwidth-tp17198647p17198647.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] 9KHz AM IF Bandwidth
Thanks Wayne. I was referring the passband width, not tuning rate thanks. I thought the FM filter couldn't be used when listening to AM mode? 10KHz may be a little wide though. Do you know how recent testing of wider AM IF bandwidths went please? wayne burdick wrote: Hi Shane, The AM bandwidth at the I.F. is limited to 10 kHz with an FM crystal filter, and 6 kHz with the AM crystal filter. The bandwidth at the audio output is a little less than half this. If you're referring to VFO tuning rates in AM mode, yes, 9 kHz is one of the step sizes available for AM mode in the CONFIG:VFO CRS (VFO Coarse) menu entry. 73, Wayne N6KR On May 12, 2008, at 5:07 PM, Shane White wrote: Is this available yet please Elecraft? -- --- http://www.elecraft.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 -- View this message in context: http://www.nabble.com/9KHz-AM-IF-Bandwidth-tp17198647p17198846.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] 9KHz AM IF Bandwidth
So I could select the FM filter to provide a 10KHz IF bandwidth and then narrow that down to suit me? wayne burdick wrote: Shane White wrote: Thanks Wayne. I was referring the passband width, not tuning rate thanks. I thought the FM filter couldn't be used when listening to AM mode? 10KHz may be a little wide though. Do you know how recent testing of wider AM IF bandwidths went please? Shane, You can narrow the AM IF bandwidth down as much as you'd like. The NORM value is 6 kHz, which translates to an audio bandwidth of 3 kHz. Widening it above 6 kHz is only useful if you have the FM filter, which you can indeed use for AM RX. (But not TX -- yet.) 73, Wayne N6KR --- http://www.elecraft.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 -- View this message in context: http://www.nabble.com/9KHz-AM-IF-Bandwidth-tp17198647p17199217.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] 9KHz AM IF Bandwidth
Great. What's the approximate time between placing an order and receiving the radio at the moment please? wayne burdick wrote: Shane White wrote: So I could select the FM filter to provide a 10KHz IF bandwidth and then narrow that down to suit me? Yes. Be sure to enable all relevant crystal filters; they'll be selected automatically as you rotate the WIDTH control. The 6 kHz filter will give you the best combination of fidelity and adjacent-channel rejection. You can go down to 2.8 or 2.7 kHz, if you like, although that will severely constrain the audio bandwidth (to about 1.4 kHz). 73, Wayne --- http://www.elecraft.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 -- View this message in context: http://www.nabble.com/9KHz-AM-IF-Bandwidth-tp17198647p17199344.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] 9KHz AM IF Bandwidth
Thanks for your help Wayne. -- View this message in context: http://www.nabble.com/9KHz-AM-IF-Bandwidth-tp17198647p17199422.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] AGC Design of the K3
I noticed a remedy for the following problem on the K3 enhancement list - Some users prefer tuning the band with a wide filter bandwidth selected (for example, using a 2.7 or 2.8 kHz SSB filter in CW mode rather than a 500 Hz or narrower filter). Strong off-frequency signals (above about S9+5) that are inside the crystal filter passband can then activate the hardware AGC circuit, reducing the level of desired signals. Shouldn't a radio's AGC only use signals within the selected final IF passband width to control gain? Wasn't this kind of AGC pumping described above a problem in older radios when DSP initially featured and the AGC wasn't included within the DSP functionality? That is, AGC would operate using circuitry prior to the DSP, users would then narrow the passband width using the DSP but then found that signals outside this passband would reduce the desired signal. -- View this message in context: http://www.nabble.com/AGC-Design-of-the-K3-tp17199520p17199520.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] AGC Design of the K3
Thanks guys. -- View this message in context: http://www.nabble.com/AGC-Design-of-the-K3-tp17199520p17199766.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] AGC Design of the K3
Thanks. -- View this message in context: http://www.nabble.com/AGC-Design-of-the-K3-tp17199520p17199788.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] AGC Design of the K3
Wayne, I don't understand the concept of variable passband filters. Surely the K3 will just choose a filter based on the current operating frequency, and that filter will be used over a range of frequencies. How are these new filters you describe different? wayne burdick wrote: 3. Later this year we'll be offering variable-passband crystal filters that each cover a significant bandwidth range, e.g. 200-400, 400-800, etc. (These are not finalized.) Each of these filters will have 8 discrete bandwidths. As you adjust the DSP controls, the K3 will again optimize the passband of the selected filter. 73, Wayne N6KR -- View this message in context: http://www.nabble.com/AGC-Design-of-the-K3-tp17199520p17199832.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] AGC Design of the K3
Very nice. Will this upgrade be able to be installed on older model K3s? -- View this message in context: http://www.nabble.com/AGC-Design-of-the-K3-tp17199520p17200418.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] AGC Design of the K3
Cool. Nice to see logic reign for a change. -- View this message in context: http://www.nabble.com/AGC-Design-of-the-K3-tp17199520p17200646.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
You meant to say affect other modes Joe, not effect. Joe Subich, W4TV-3 wrote: Excellent job Mike! And if someone doesn't like bass all they need do is adjust the EQ. Now we have a choice. No, adjusting the EQ messes up digital modes. In addition, additional bandwidth below 200 Hz makes the signal illegal on 60 meters where the occupied bandwidth is specified at 2800 Hz maximum. Good engineering practice calls for a default transmitted audio spectrum of 200 Hz to 2800 Hz: http://www.arrl.org/FandES/field/regulations/faq-60.html If you want to act like a spoiled child and be a bandwidth pig, use your EQ to mess up your own signal. Allow the others to occupy 200 - 2800 Hz and be legal on 60 meters without any need to screw around with the EQ and effect other modes. 73, ... Joe, W4TV -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of n4lq Sent: Sunday, May 04, 2008 10:14 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Bass in audio is good Excellent job Mike! And if someone doesn't like bass all they need do is adjust the EQ. Now we have a choice. Steve Ellington [EMAIL PROTECTED] - Original Message - From: Mike Scott [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Sunday, May 04, 2008 9:25 PM Subject: [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 ___ 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 -- No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.8/1413 - Release Date: 5/3/2008 11:22 AM ___ 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 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/Bass-in-audio-is-good-tp17053403p17071544.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: Desired AM mode improvements
Thanks for the suggestion N4OI but the R8 was released 16 years ago. I'd like to take advantage of some modern receiver design. Shane, You could consider buying a used Drake R8 on eBay -- In my opinion it is a fantastic general coverage receiver with sync dedtection and great sound. You might be able to pick one up for about the cost of a K3 subreceiver option! 73 de Ken - N4OI / K1 Shane White wrote: I'm looking for a new general purpose HF receiver and have been disheartened by radios, including transceivers, currently available on the market for less than around $2K. Consequently, I would like to know if Elecraft plan to incorporate Synchronous AM detection? ...snip -- View this message in context: http://www.nabble.com/K3%3A-Desired-AM-mode-improvements-tp16624208p16763386.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: Desired improvements
Lyle KK7P wrote: ...I would like to know if Elecraft plan to incorporate Synchronous AM detection? Eventually, the plan is to have a synchronous AM detector in the K3. It is behind a number of other tasks on the list, but it is on the list. I noticed the latest firmware update includes wider AM IF bandwidths. Can Elecraft disclose what these bandwidths are yet please? The software being tested now brings the IF bandwidth up to 10 kHz if you have the FM filter installed, 6kHz if you have the AM filter installed. AF response in the 4-ish kHz range. AF response will eventually improve to around 5 kHz. 73, Lyle KK7P ___ 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 In anticipation of my purchase I downloaded the K3's instruction manual. This manual states that Synchronous AM mode can be used. Can Elecraft please verify that the K3 does not yet receive in Synchronous AM mode? Do you expect to provide this functionality within the next 2 or 3 months, or is it a year or more away? Thanks again, Shane VK5ABQ -- View this message in context: http://www.nabble.com/K3%3A-Desired-improvements-tp16624208p16738474.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: Desired improvements
Lyle KK7P wrote: ...I would like to know if Elecraft plan to incorporate Synchronous AM detection? Eventually, the plan is to have a synchronous AM detector in the K3. It is behind a number of other tasks on the list, but it is on the list. I noticed the latest firmware update includes wider AM IF bandwidths. Can Elecraft disclose what these bandwidths are yet please? The software being tested now brings the IF bandwidth up to 10 kHz if you have the FM filter installed, 6kHz if you have the AM filter installed. AF response in the 4-ish kHz range. AF response will eventually improve to around 5 kHz. 73, Lyle KK7P ___ 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 Thanks Llyle - I plan to buy a K3 once Synchronous AM is available and I think you'll capture a good part of the shortwave listener market then too. -- View this message in context: http://www.nabble.com/K3%3A-Desired-improvements-tp16624208p16626774.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: Desired improvements
Lyle, with the improvements you've described, will the K3 be able to receive an IF bandwidth of 10KHz using synchronous AM? Lyle KK7P wrote: ...I would like to know if Elecraft plan to incorporate Synchronous AM detection? Eventually, the plan is to have a synchronous AM detector in the K3. It is behind a number of other tasks on the list, but it is on the list. I noticed the latest firmware update includes wider AM IF bandwidths. Can Elecraft disclose what these bandwidths are yet please? The software being tested now brings the IF bandwidth up to 10 kHz if you have the FM filter installed, 6kHz if you have the AM filter installed. AF response in the 4-ish kHz range. AF response will eventually improve to around 5 kHz. 73, Lyle KK7P ___ 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%3A-Desired-improvements-tp16624208p16627265.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] K3: Desired improvements
I'm looking for a new general purpose HF receiver and have been disheartened by radios, including transceivers, currently available on the market for less than around $2K. Consequently, I would like to know if Elecraft plan to incorporate Synchronous AM detection? I noticed the latest firmware update includes wider AM IF bandwidths. Can Elecraft disclose what these bandwidths are yet please? Thanks, Shane. -- View this message in context: http://www.nabble.com/K3%3A-Desired-improvements-tp16624208p16624208.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] K3: Synchronous Detection
Is there any way to be automatically notified of the K3's developments, such as the addition of synchronous detection? Thanks, Shane. -- View this message in context: http://www.nabble.com/K3%3A-Synchronous-Detection-tp16534680p16534680.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
