[Elecraft] Fw: (K3) RTTY offset ?
- Original Message - From: Adriano adriano.pera...@uol.com.br To: Richard Ferch ve3...@storm.ca Sent: Wednesday, January 26, 2011 9:53 AM Subject: Re: [Elecraft] (K3) RTTY offset ? Hello Greg Richard Sry i forgot mention: Software is MMVARI MixW On the radio i´m using DATA A mode as described on a tutorial i read don´t know where. Tnx for the help PY2ADR - Original Message - From: Richard Ferch ve3...@storm.ca To: elecraft@mailman.qth.net Sent: Tuesday, January 25, 2011 9:48 PM Subject: Re: [Elecraft] (K3) RTTY offset ? Hello Adriano, You didn't say whether you were using FSK D or AFSK A, or what software you were using. I will assume that when you say on the scope you mean on the waterfall in software such as MMTTY. If your radio is in FSK D, then it can receive on any frequency within the filter bandpass, but it can only transmit on one frequency - the one corresponding to the PITCH setting. If you click on a signal in the waterfall to receive it, the frequency you choose in the software's waterfall will probably not be the same as the one the radio will transmit on. If you use the K3's MONitor function to listen to your transmitted signal, you can hear whether the transmitted and received frequencies are the same. Depending on the software you are using and its capabilities, there are advanced methods to use mouse-tuning and AFC in FSK RTTY, but the simplest solution to this problem is never to use clicking in the waterfall to find a signal when you are using FSK. If you are CQing, you can use AFC to let your receiving software tune in callers who come back slightly off-frequency, but when you are planning to call someone else who is CQing you should turn AFC off. In MMTTY, you can use the HAM button to ensure that your receive frequency will be the same as your transmit frequency. You should configure the HAM default to be the same as the radio's PITCH setting. If your radio is in AFSK A, it can transmit on the same frequency it receives on, although the best frequency for both transmitting and receiving is the one in the PITCH setting and the HAM button. If you are using MMTTY software the easiest way to ensure that your transmit and receive frequencies are the same is to turn NET on. With NET on you can safely use mouse-clicking to tune in a signal to work. However, if you are calling CQ you should turn NET off, and use the HAM button before your first transmission to establish your transmit frequency. If the other station comes back off-frequency you can use AFC or a mouse-click to copy the other station's signal, but as soon as the QSO is completed you should click on the HAM button to return to your original transmit frequency. 73, Rich VE3KI PY2ADR wrote: Trying to config k3 on digi modes but i noted a offset between rx and tx ... When i find a sig on the scope i click on it and the rx is ok. Then i go tx and the \ station comes back in another qrg. Or when i call cq the stations comes back in \ another qrg __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: APF effectiveness
Heck, I can hear thiose phantoms with the radio off (tinnitus). Fortunately it subsides in the presence of other noise - just like with the APF, which works FB for me on the low bands. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 On 1/25/2011 7:55 PM, Barry N1EU wrote: What you're describing (hear signals that aren't even there) sounds to me like the APF is working just as intended. You're hearing faint ringing at your sidetone frequency when no signal is present. When a signal is present and tuned in, it will have precisely that same tone but will pop further out of the noise than that phantom signal. It just demands a little practice and patience along with fine tuning. If someone wants a lower Q APF with less gain, they should try a dsp width of 50hz without APF. 73, Barry N1EU Ralph Parker wrote: ...perhaps less gain and a little wider BW or give the user the tools to do it ourselves. I was thinking exactly that myself last night on 160m - no problem with the bandwidth, but I'd gladly give up a db or two of APF gain to reduce the ringing. Because of the ringing, I can hear signals that aren't even there! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA-500 vs THP
I've seen the KPA-500 at Visalia and have been following it closely (I still want #22) and have just been on a DXpedition (ZK2A and VK9NN) with a couple of the THP amps- That just reinforced my desire for the KPA-500. And if I'd had my Elecraft gear, I'd have been on as DU1/N6TQS and DU1/N6TQS/DU8. 73,doug On 24-Jan-11 20:52, Gary Gregory wrote: To All, Well I am a bit surprised at some comments. I guess my thoughts on the 'closeness' of the THP caused some angst with some. The kit version of the KPA-500 is my choice. My 'shack' (read desk) is a THP Free Zone...:-) 73's Gary On Tue, Jan 25, 2011 at 4:31 AM, Ken Chandlerg0...@sky.com wrote: I'm more interested in how the KPA 500 handles a full blown 48hr CW contest with full QSK. What connections are on the rear panel, etc. I just hope someone from the contesting brotherhood has it and given it a really good workout!! Ken..G0ORH k2, K3, P3 Sent from my iPhone On 24 Jan 2011, at 18:04, Wayne Burdickn...@elecraft.com wrote: The KPA500 will do full QSK at over 80 WPM with the K3 in QRQ mode. Yes, it uses PIN-diode T/R switching. Wayne N6KR On Jan 24, 2011, at 9:54 AM, W5UXH wrote: I remain interested in knowing if the KPA-500 will handle QSK with the K3 in CW+ mode at 65 wpm, and if it uses PIN diode switching for QSK. Chuck, W5UXH Eric Swartz - WA6HHQ, Elecraft wrote: Way less than that for both the kit and build versions. We haven't set the final price yet, but the kit version should come in about $1995. We're in field test right now. Stay tuned! 73, Eric __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Fw: (K3) RTTY offset ?
Adriano, In MMVARI, make sure NET is selected (turned on). If NET is off, your transmit and receive frequencies can be different. If you see two different indicators at the top of the waterfall (one is light blue and the other one is dark blue), that means your transmit and receive frequencies are different. You can make them the same by clicking on NET. In MixW, make sure LOCK is turned off. If LOCK is on, your transmit and receive frequencies can be different. If you are using DATA A, you will need to select rtty-U in MMVARI. To tune in a signal, click in the waterfall midway between the two peaks in the waterfall. Note that in DATA A, the frequency on the radio dial is the suppressed carrier (BFO) frequency. The actual frequency you are transmitting and receiving on will be higher than the BFO frequency by the same amount as the audio frequency of the left track in the waterfall. For example, if the radio's dial is on 14080.00 and the left track of the signal is on 1500 Hz in the waterfall, the actual signal frequency is 14081.50 kHz. 73, Rich VE3KI PY2ADR wrote: Sry i forgot mention: Software is MMVARI MixW On the radio i´m using DATA A mode as described on a tutorial i read don´t know where. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] My opinion ..KPA 500
Everyone feels differently about QRO. What limit or no limit is enough. As a hardcore DXer I was taught as a pup antenna was everything. Skill then power in that order. I've done very well never running over 6-700w. I concentrated on antenna improving my skill. My new challenge is 6m. I've seen no mention of 6m in these comments. There are no 6m amps in this price range. ... Once the KPA 500 is on the market if you ever dreamed of going on a Dxpedition you'll be able to fulfill your fantasy. A K3 switcher PS with a KPA500 and a spool of wire in a suitcase. Weighing under 60 lb.s. .. If you ever had a REAL emergency had to go temporary location/antenna that wouldn't be a bad combination either. I guess the answer will be known in a year if it's a hit. I personally plan on buying one if I can. If it's as great as my K3 how can I lose? . K9IL . __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 120-240VAC option?
Will the KPA500 have a 120VAC or 240VAC option. I just rewired my shack with a 50A 240VAC sub panel with 2- 240VAC outlets and 2- 120VAC 10 socket power strips and would like to use one of the 240VAC sockets. Rick W1GHF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My opinion ..KPA 500
In fact there are a number of 6 meter (alone) amps in the 300-400 watt category. I am using a TE Systems 0552G amp that provides 375 watts cool with 20-25 watts in. It runs in roughly the $680 range and is IMHO an outstanding little amp for the magic band. (I should add that I have worked KL7 from MA with 10 watts and a wire dipole on 6 meter sideband...hot is hot) John Ragle -- W1ZI = On 1/26/2011 8:47 AM, r miles wrote: I concentrated on antenna improving my skill. My new challenge is 6m. I've seen no mention of 6m in these comments. There are no 6m amps in this price range. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Question about K2 K3 Aux bus compatiblity
Hi All, I have a question. Does the band select output from the K2 (Aux bus signal coming out of the back of the KPA100) the same signal information that is output by the K3? I am looking at interfacing an amp to the K2 and there is an off-the-shelf cable available but it is advertised as a K3 to amp cable. Big thanks Duane - N1BBR -- bw...@fastmail.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500- are you ready for your close-up?
I think now I would be a good time repost a link to some photographs I took at HamCom 2010 where Eric had their new baby on display. You have viewed the photograph almost 900 times so there is some interest :) The production model may not resemble this display, but I bet it will be close. I have visualized the KPA500 beside my K3, P3 and have begun the decision process on what must go to make room. The ICom rig is looking vulnerable. http://www.flickr.com/photos/ak5x/4691125211/ 51 years of Ham Radio: http://www.flickr.com/photos/ak5x/sets/72157612687555968/ The rest of the HamCom 2010 including more Elecraft pictures: http://www.flickr.com/photos/ak5x/sets/72157624253942974/ Hamcom 2011, where the ARRL National Convention will be held this year: http://www.hamcom.org/catalog/ 73, Bill AK5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - KPA500 - KAT500
I am not sure if I have read this or not. However, if I have read it, I forgot the answer. If I have not read it, then my question. If I have my K3 feeding my KPA500 feeding my KAT500 then, If I push the Tune button on the K3, what happens? My guess is that the K3 AT will be disabled and my tune signal will operate through the KPA500 which is automatically disabled at the moment and the KAT500 is tuned to my load. Or, maybe I have to configure the AT in the K3 to be disabled yet allow the tuning to operate the KAT500. My preference is that if the KPA500 is on at the time I push the tune button then it is temporarily switched off so that the tune signal passes through at 10 watts to the KAT500. Or, do I have to physically switch off the KPA500 prior to doing my tune operation. Knowing Eric and Wayne, I wouldn't think so. 73, phil, K7PEH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: APF effectiveness
Exactly my thoughts. I found the initial beta release with APF to be excellent. After further improvements, more miss than hit, despite trying all the tricks. Just my two cents worth... Now back to the extensive QRP/QRO thread, and it's tenuous connection to the KPA500... Paul WB2ABD K3 #129 I was thinking exactly that myself last night on 160m - no problem with the bandwidth, but I'd gladly give up a db or two of APF gain to reduce the ringing. Because of the ringing, I can hear signals that aren't even there! Ralph, VE7XF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] N2CQ QRP Contest Calendar: Jan 26 - Feb 25, 2011
~ N2CQ QRP CALENDAR JANUARY 26 - FEBRUARY 25, 2011 ~ NAQCC's 160m QRP Sprint *** QRP Contest *** EST: Jan 26, 8:30 PM to 10:30 PM UTC: Jan 27, 0130z to 0330z Rules: http://naqcc.info/contests.html ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Jan 27, 9 PM to 10:29 PM UTC: Jan 28, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ CQ WW 160-Meter DX Contest (CW) ... QRP Category Jan 28, 2200z to Jan 30, 2200z Rules: http://www.cq160.com ~ REF (French) CW Contest Jan 29, 0600z to Jan 30, 1800z Rules: http://concours.ref-union.org/reglements/actuels/reg_cdfhfdx.pdf ~ UBA DX Contest (Belgian) (SSB) ... QRP Category Jan 29, 1300z to Jan 30, 1300z Rules: http://www.uba.be/sites/default/files/uploads/hf_contests/ubatest_dx.pdf ~ SPAR Winter Field Day (Any Mode) ... Portable Battery Points Jan 29, 1700z to Jan 30, 1700z Rules: http://www.spar-hams.org/contests/winterfd/index.php?pg=2 ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Jan 31, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ SKCC Weekend Sprintathon (Straight Key CW) ... QRP Category Feb 1, z to 2359z Rules: http://www.skccgroup.com/sprint/wes/ ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 1, 9 PM to 10:29 PM UTC: Feb 2, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 3, 9 PM to 10:29 PM UTC: Feb 4, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ 10-10 Int. Winter Phone QSO Party ... QRP Category Feb 5, 0001z to Feb 6, 2359z Rules: http://www.ten-ten.org/Forms/QSOPartyRulesRevised.pdf ~ Black Sea Cup International (CW/SSB) ... QRP Category Feb 5, 1200z to Feb 6, 1159z Rules: http://bscc.ucoz.ru/index/0-21 ~ EPC WW DX Contest (BPSK63) ... 10W LP Feb 5, 1200z to Feb 6, 1200z Rules: http://www.epcwwdx.srars.org/index.php/contest-rules.html ~ Vermont QSO Party (CW/PH/Dig) ... QRP Category Feb 5, 1300z to Feb 6, 0300z and Feb 6, 1300z to Feb 7, 0300z Rules: http://vtqsoparty.westriverradio.org/ ~ Minnesota QSO Party (All) ... QRP Category Feb 5, 1400z to 2359z Rules: http://www.w0aa.org/ ~ FYBO Winter QRP Field Day (CW/SSB) ... QRP Contest! Feb 5, 1400z to 2400z Rules: http://www.azscqrpions.org ~ AGCW Straight Key QSO Party (CW 80M) ... QRP Category Feb 5, 1600z to 1900z Rules: http://www.agcw.org/en/?Contests:Straight_Key_Party ~ British Columbia QSO Party (CW/PH/Dig) ... QRP Category Feb 5, 1600z to Feb 6, 0759z Rules: http://www.deltaamateurradio.com/bcqsoparty/Delta_Amateur_Radio/Rules.html ~ Delaware QSO Party (All) ... QRP Category Feb 5, 1700z to Feb 6, 2359z Rules: http://www.fsarc.org/qsoparty/qsohome.htm ~ North American Sprint (CW) ... QRP Category Feb 6, z to 0400z Rules: http://www.ncjweb.com/sprintrules.php ~ New Mexico QSO Party (CW/PH/Dig) ... QRP Category Feb 6, 1500z to Feb 7, 0300z Rules: http://pages.swcp.com/~n5zgt/nmqsoparty/index.html ~ QRP ARCI Fireside Sprint (SSB) ...QRP Contest! Feb 6, 2000z to 2359z Rules: http://www.qrparci.org/ ~ Adventure Radio Spartan Sprint (CW) ... QRP Contest! EST: Feb 7, 9 PM to 11 PM (First Monday each month) UTC: Feb 8, 0200z to 0400z Rules: http://www.arsqrp.blogspot.com/ ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Feb 7, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Feb 8, 9 PM to 10:29 PM UTC: Feb 9, 0200z to 0329z Info: http://www.qrpfoxhunt.org/
Re: [Elecraft] KPA500 - just 500 watts?
On 1/25/2011 3:08 PM, Bill W4ZV wrote: I enjoy operating QRP from portable sites using makeshift antennas but I give 99% of the credit to the guy on the other end. I strongly agree. 73, Bill P.S. I run 1.5 kW on Topband but always get a thrill working QRP callers. Same here. I have a lot of land, lots of nice antennas, including Beverages, so I can hear pretty well. I particularly like the Stew Perry contest, where you get extra points for working QRP stations, and the ARRL DX Contest, where the DX station sends his power as the exchange. Each year, I'm pleasantly surprised to work a fair number of 5W and 1W stations from JA on 80M and 40M! I'm a member of NCCC, one of the top contesting clubs, and one of our recent Presidents, N6WG, ONLY runs QRP. There are top contesters in AL and MN who often runs QRP. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Fishing
The four stages of fishing: 1 - I caught a fish! 2 - I caught a LOT of fish! 3 - I caught a Trophy fish! 4 - Did I bait my hook? (the Zen state has been achieved) Now how do these relate analogically to amateur radio? Kevin. KD5ONS __ I'll bite -- 1. I made a QSO! 2. I got a BIG contest score! 3. I won an Award! 4. Did I turn my 1.5 KW amp on?? Or did I actually do all that with the exciter? Eric VA7DZ -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 500Hz 5-pole vs Inrad 500Hz 8-pole?
Is either one/both wide enough for 500Hz Olivia modes? I would question using either 500 Hz option for Olivia since the group delay will be significant in the shoulder areas and that can impact the outer tones considerably. Any thoughts on the merits of one vs the other? My Elecraft 500 Hz, 5-pole filters averaged 480 Hz at the -6dB points while the INRAD filters tend to be about 10% (or more) wider than nominal, particularly as the nominal bandwidth decreases. On the other hand, the skirts are much sharper (better shape factor) with the 8 pole filters. does the 8-pole Inrad filter not need to be matched? There is no matching for the INRAD filters but their center frequencies are not well controlled. In a recent sample of four 400Hz INRAD filters, I measured offsets at -15 Hz, +24 Hz, +45 Hz and + 55 Hz. The total difference of 60 Hz in 430 Hz (average) measured bandwidth is a bit concerning. I ended up with the -15 Hz/+24 Hz pair in one rig (no offset) and the +45 Hz/+55 Hz pair in the other rig with a slight offset to center the pair. 73, ... Joe, W4TV On 1/25/2011 9:27 AM, Ross Primrose wrote: Any thoughts on the merits of one vs the other? The 5-pole filter is cheaper, but they need to me matched for diversity receive, does the 8-pole Inrad filter not need to be matched? Is either one/both wide enough for 500Hz Olivia modes? Thanks... 73, Ross N4RP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] APF
Did anything change with APF in the latest release ? Seemed to perform better before rev 2.45. Maybe I 'm just loosing my touch. 73 Dave Lear NE5DL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Hi Dave I asked the same question. The gurus at Elecraft indicated that nothing had changed. I still have the original firmware and load it up in my spare K3. The original version is the ESP version that works for me. I like you cant get the same results with the current release of the APF that I go with the original. The original blew my socks off I was so impressed with it. I have done the comparison test so many times now that I know that the original was the better release and its not my imagination. If the programmer says the hex code is the same then there must be some other factors at play. I dont really have the answer. I am keeping the original firmware just for contests. 73 John --- On Wed, 1/26/11, David Lear del...@charter.net wrote: From: David Lear del...@charter.net Subject: [Elecraft] APF To: Elecraft@mailman.qth.net Date: Wednesday, January 26, 2011, 11:27 AM Did anything change with APF in the latest release ? Seemed to perform better before rev 2.45. Maybe I 'm just loosing my touch. 73 Dave Lear NE5DL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Hi John, I agree with you. 73 Detlef, DL7NDF Am 26.01.2011 21:19, schrieb juergen: Hi Dave I asked the same question. The gurus at Elecraft indicated that nothing had changed. I still have the original firmware and load it up in my spare K3. The original version is the ESP version that works for me. I like you cant get the same results with the current release of the APF that I go with the original. The original blew my socks off I was so impressed with it. I have done the comparison test so many times now that I know that the original was the better release and its not my imagination. If the programmer says the hex code is the same then there must be some other factors at play. I dont really have the answer. I am keeping the original firmware just for contests. 73 John --- On Wed, 1/26/11, David Leardel...@charter.net wrote: From: David Leardel...@charter.net Subject: [Elecraft] APF To: Elecraft@mailman.qth.net Date: Wednesday, January 26, 2011, 11:27 AM Did anything change with APF in the latest release ? Seemed to perform better before rev 2.45. Maybe I 'm just loosing my touch. 73 Dave Lear NE5DL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K2] K2's frequency counter cable with KPA100 installed
Page 55 of the KPA100 manual recommends removing the K2's frequency counter cable when the KPA100 is installed, since leaving the cable in may cause an increase in the amplitude of spurious signals. Since the manual says may and I'd really like to leave the cable in, what are people's experience with this? Do you hear a notice-able increase in spurious signal amplitude? If the answer really is yes, remove the cable, is there any other way, short of disassembling the K2/100 and inserting the cable, to align the K2's filters? Thanks! - Bruce - Bruce Rosen K1FFX -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-K2-s-frequency-counter-cable-with-KPA100-installed-tp5964511p5964511.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: Big Ferrite Split Beads @ B.G. Micro
Hi all, I followed the advice about the advantage of the larger cores and ordered a few those and a few of these: 0431176451. They came in today and the latter ones are *huge* and heavy; I was shocked when I open the parcel from UPS (Mouser sure packs them well). But hopefully they will come in handy as long as there is something solid to support their weight. Not something you can have hanging off your router or switch. AB2TC - Knut Craig D. Smith wrote: snip I use lots of the 0431164181 clamp-ons here. They will accommodate one pass of RG-8 size coax or several turns of computer cables, audio cables, etc. For example, it will allow 6 or 7 turns of RG-174. 73 Craig AC0DS snip again -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-Big-Ferrite-Split-Beads-B-G-Micro-tp5939488p5964453.html Sent from the [HAM] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K2] Frequency counter cable with KPA100 installed
[Sorry for the double post! I inadvertently posted to the Elecraft main list. but I really meant to post here to the K2 list] Page 55 of the KPA100 manual recommends removing the K2's frequency counter cable when the KPA100 is installed, since leaving the cable in may cause an increase in the amplitude of spurious signals. Since the manual says may and I'd really like to leave the cable in, what are people's experience with this? Do you hear a notice-able increase in spurious signal amplitude? If the answer really is yes, remove the cable, is there any other way, short of disassembling the K2/100 and inserting the cable, to align the K2's filters? Thanks! - Bruce - Bruce Rosen K1FFX -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Frequency-counter-cable-with-KPA100-installed-tp5964552p5964552.html Sent from the [K2] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] K2's frequency counter cable with KPA100 installed
The third harmonic of the BFO appears around 14.4 MHz, if I'm not mistaken. I did notice an increase in the level of this spurious output on 20 meters when the cable was inserted. I didn't measure it or anything -- but it was louder. Someone with appropriate test equipment might be persuaded to measure it, but of course it might vary from K2 to K2. On 1/26/2011 2:44 PM, K1FFX wrote: Page 55 of the KPA100 manual recommends removing the K2's frequency counter cable when the KPA100 is installed, since leaving the cable in may cause an increase in the amplitude of spurious signals. Since the manual says may and I'd really like to leave the cable in, what are people's experience with this? Do you hear a notice-able increase in spurious signal amplitude? If the answer really is yes, remove the cable, is there any other way, short of disassembling the K2/100 and inserting the cable, to align the K2's filters? Thanks! - Bruce - Bruce Rosen K1FFX -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] K2's frequency counter cable with KPA100 installed
Bruce, Remove the cable. You will not hear those spurious signals, they are transmitted ones. It would be OK to store the cable inside the K2 and connected to the plug on the control board, but you need to be sure the other end does not make contact with the circuit parts. Tom Hammond fashioned a clip to hold the end of the cable secure at the rear of the left side panel. If that interests you, I think you can find information at www.n0ss.net. Yes, you will need to remove the KPA100 to change the filters, but you should not have to do that often once they are set up correctly, they will stay put. If you have just been experimenting with the filters. I suggest you get a copy on Spectrogram and set the filters up once and for all. You can find Spectrogram and setup and how-to information at Tom's website too. I have additional information in the K2 Dial Calibration article at my website www.w3fpr.com that may help you as well. 73, Don W3FPR On 1/26/2011 5:44 PM, K1FFX wrote: Page 55 of the KPA100 manual recommends removing the K2's frequency counter cable when the KPA100 is installed, since leaving the cable in may cause an increase in the amplitude of spurious signals. Since the manual says may and I'd really like to leave the cable in, what are people's experience with this? Do you hear a notice-able increase in spurious signal amplitude? If the answer really is yes, remove the cable, is there any other way, short of disassembling the K2/100 and inserting the cable, to align the K2's filters? Thanks! - Bruce __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Okay, what version of firmware has the original APF that worked better for you guys? I'll try and run a spectral comparison of the two and post the results. I'm skeptical that there's a difference but I'm willing to give it a go. Barry N1EU juergen piezo wrote: I like you cant get the same results with the current release of the APF that I go with the original. -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5964585.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 fixed tune - no marker
P3 Version 1.0 - I note that in fixed tune mode, there is no vertical line marker to indicate the tuned frequency, only the bandwidth marker at the bottom. Anyone know why it is absent? Its not user-friendly when tuning to a peak with a marker that is down at the bottom of the display in the noise floor. Any chance, programmers, that it might be made available? Otherwise, new firmware 1.0 is great. Also noticed a small glitch, I put the menu item fixed/tracking into function 8, and it also went into F1 to 4, overwriting what what previously there. Anyone else get something similar? Cheers, Chris Meagher VK2ACD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Gents, Even *I* thought something had changed. (Lyle, our DSP engineer, assured me that it hadn't. The code hasn't changed.) What's happening is that APF's effect is more obvious in the presence of certain band-noise conditions. These conditions will vary from band to band, and can change hourly, daily, maybe even monthly for a given QTH. I went back and listened the next day, and the APF was doing its job. I find it especially useful on the low bands, and many K3 owners have posted testimonials about this -- using the final version of the code. The APF algorithm, with its gradual slope and ~30 Hz wide peak, brings up a very narrow portion of the audio spectrum (around the center pitch) just a few dB, without bringing up the adjacent noise or causing a rapid phase transition. On several occasions I've measured a 3 to 5 dB improvement in S+N/N on weak signals using the K3's built-in audio voltmeter. 73, Wayne N6KR On Jan 26, 2011, at 12:19 PM, juergen wrote: Hi Dave I asked the same question. The gurus at Elecraft indicated that nothing had changed. I still have the original firmware and load it up in my spare K3. The original version is the ESP version that works for me. I like you cant get the same results with the current release of the APF that I go with the original. The original blew my socks off I was so impressed with it. I have done the comparison test so many times now that I know that the original was the better release and its not my imagination. If the programmer says the hex code is the same then there must be some other factors at play. I dont really have the answer. I am keeping the original firmware just for contests. 73 John --- On Wed, 1/26/11, David Lear del...@charter.net wrote: From: David Lear del...@charter.net Subject: [Elecraft] APF To: Elecraft@mailman.qth.net Date: Wednesday, January 26, 2011, 11:27 AM Did anything change with APF in the latest release ? Seemed to perform better before rev 2.45. Maybe I 'm just loosing my touch. 73 Dave Lear NE5DL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Barry From what I can tell. MCU 4.21/DSP 2.69/ etc. is when APF first appeared. I had the same experience. In fact, I was actually leaving APF on most of the time until the newer version came along. I loved it..Now I seldom use it because it does more harm than good. Maybe one's socks can only be blown off once? Steve N4LQ - Original Message - From: Barry N1EU barry.n...@gmail.com To: elecraft@mailman.qth.net Sent: Wednesday, January 26, 2011 6:12 PM Subject: Re: [Elecraft] APF Okay, what version of firmware has the original APF that worked better for you guys? I'll try and run a spectral comparison of the two and post the results. I'm skeptical that there's a difference but I'm willing to give it a go. Barry N1EU juergen piezo wrote: I like you cant get the same results with the current release of the APF that I go with the original. -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5964585.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [Bulk] [K2] K2's frequency counter cable with KPA100 installed
On Jan 26, 2011, at 5:44 PM, K1FFX wrote: Page 55 of the KPA100 manual recommends removing the K2's frequency counter cable when the KPA100 is installed, since leaving the cable in may cause an increase in the amplitude of spurious signals. Since the manual says may and I'd really like to leave the cable in, what are people's experience with this? Do you hear a notice-able increase in spurious signal amplitude? If the answer really is yes, remove the cable, is there any other way, short of disassembling the K2/100 and inserting the cable, to align the K2's filters? I only did this once, and yes, I noticed more spurious signals. You don't have to disassemble much to align the filters. Just enough to take the top off and flip it over beside the rest of the unit. And this isn't something you need to do frequently -- and usually then only because you did something else to the K2/100, in which case you'll have the top off anyway Bill Coleman, AA4LR, PP-ASELMail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: Not within a thousand years will man ever fly! -- Wilbur Wright, 1901 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [Bulk] [K2] Frequency counter cable with KPA100 installed
On Jan 26, 2011, at 6:01 PM, K1FFX wrote: [Sorry for the double post! I inadvertently posted to the Elecraft main list. but I really meant to post here to the K2 list] It's all one list. There is no separate K2 list. Bill Coleman, AA4LR, PP-ASELMail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: Not within a thousand years will man ever fly! -- Wilbur Wright, 1901 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5964669.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Fw: K3/K144XV/P3 Signal Strength Readings
N1AL said: I realize that IARU Region 1 recommendations officially apply only to Region 1 (Europe, Africa, Middle East, N. Asia) but since I don't know of any other official recommendation that's the one I used for the P3. Not sure who has adopted the Recommendation. As GM4ESD mentioned, what IARU models itself on has another step to the overall process - though this has more to do with regulatory matters. The bits of that organization that do standardization stuff like this involves stakeholders the process is one where they all agree on something, rather than just some of them then the rest of the world endorses that. Also note that since 1978, this is not one of the things that has made the rounds of the IARU Regions. Since the Recommendation is more like an endorsement of an existing industry standard, the industry association might be a better reference. To be honest, it seems with transverter conversion gains ranging from under 15 to over 25 dB since they also can be cascaded, maybe with products like the K3 P3 where the signal strength indication now means something, the best solution is something the user can set. This seems necessary just for the XVs/K144XV alone. Or maybe just put a sticker below the meter: Signals in the meter may/may not be as strong as they appear. ;^) 73, ex-VR2BG/p. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Tips for using APF
A couple of notes from the Elecraft lab: 1. When using APF, it's critical to tune the signal in very accurately. (Otherwise it may seem like APF isn't working.) For best results, I recommend using 1-Hz VFO tuning. An alternative is to adjust the APF center pitch, which can be moved in 5-Hz increments using the SHIFT control. Note that only 10-Hz increments are displayed. 2. There are two filter Presets (I and II, accessed by HOLDing the HI/WIDTH knob). You can turn APF on for one preset and off for the other. This control is closer to where the action is than DUAL PB, and I find it more convenient to use. 3. You can of course hear the effect of APF by ear, but if you want to quantify it, try using the built-in AF voltmeter on a very weak constant carrier buried in noise. Here's the procedure I use: a. Switch to a noisy band/antenna (80 m at night, let's say, with a vertical or inverted-V). b. Turn APF off. c. Set WIDTH to 300 Hz, with no SHIFT. d. Hunt for an extremely weak on-air carrier -- one you can just barely detect. A carrier that's caused by a local computer or TV is ideal because there won't be much fading during the test. e. Tap DISP and rotate VFO B until you get to AFV (audio volt meter). Let the reading stabilize. f. Rotate VFO B one more tic clockwise to dBV. The number will bounce around 0.0 by maybe +/- 1 dB. Call this the reference level. g. Now tune well off the carrier so that you hear only noise. The dBV number will indicate how many dB the signal has dropped. If it drops 3 dB, your S+N/N ratio is 3 dB. h. Tune the signal back in and make sure the level is back to around 0.0. i. Turn on APF. Using FINE VFO tuning (1-Hz steps), make sure the carrier is peaked as indicated by ear or on the dBV indication. j. Use VFO B to go back to AFV for a few seconds to capture a new relative signal level. Then go back to dBV, which should again show about 0.0 (bouncing a little). k. Tune well off the carrier so you again hear only noise. l. Note the new (negative) dB reading. I just repeated this little test on 80 m with persistent S-6 noise. Here's what I got: Without APF: 1 dB S+N/N With APF: 6 dB S+N/N In fact, having turned APF on, I was now able to find a lot more little carriers :) The secret is to tune slowly. Try hunting for DX with APF on at the low end of 40 or 80 m when the sun is just setting. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] 120V vs 240V
I will need to add a circuit for a KPA-500. It is less than 25 feet from the panel. Other than the cost of wire for the circuit is there any advantage/disadvantage to feeding this amp 120V or 240V? It would have it's own circuit so the voltage droop on 120V would be minimal I guess. 73, Joe W8JH K3 1713 -- View this message in context: http://elecraft.365791.n2.nabble.com/120V-vs-240V-tp5964845p5964845.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 120V vs 240V
For a 500W amp, probably doesn't matter, however, why not plan for the future? Some day, you may want a bigger amp that will require 240V, so put it in now. Barry W2UP -- View this message in context: http://elecraft.365791.n2.nabble.com/120V-vs-240V-tp5964845p5964920.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA500 120-240VAC option?
Yes. It supports both. 73, Eric www.elecraft.com _..._ On Jan 26, 2011, at 5:50 AM, Rick Comins manyh...@comcast.net wrote: Will the KPA500 have a 120VAC or 240VAC option. I just rewired my shack with a 50A 240VAC sub panel with 2- 240VAC outlets and 2- 120VAC 10 socket power strips and would like to use one of the 240VAC sockets. Rick W1GHF __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
May I suggest that one of the necessities of using APF is to throttle back the RF gain so that the AGC is not pushing up the noise to the level of forcing what sounds like ringing. When I'm hearing what sounds like ringing, moving back the RF gain (or removing PRE, or using ATT) will usually clear it up. Using slow AGC usually does NOT help much, but backing off RF gain so the background noise is only moderate or less usually helps. 73, Guy. On Wed, Jan 26, 2011 at 6:52 PM, Barry N1EU barry.n...@gmail.com wrote: Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte). Have a look: http://n1eu.com/k3apf.gif magenta and green plots are taken with width = 200hz aqua and yellow plots are taken with width = 100hz Barry N1EU -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5964669.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
John, What is the firmware version number of the earlier one that the APF worked the best ? I'm thinking about trying the APF out in this version. thanks, Bob K6UJ On Jan 26, 2011, at 12:19 PM, juergen wrote: Hi Dave I asked the same question. The gurus at Elecraft indicated that nothing had changed. I still have the original firmware and load it up in my spare K3. The original version is the ESP version that works for me. I like you cant get the same results with the current release of the APF that I go with the original. The original blew my socks off I was so impressed with it. I have done the comparison test so many times now that I know that the original was the better release and its not my imagination. If the programmer says the hex code is the same then there must be some other factors at play. I dont really have the answer. I am keeping the original firmware just for contests. 73 John --- On Wed, 1/26/11, David Lear del...@charter.net wrote: From: David Lear del...@charter.net Subject: [Elecraft] APF To: Elecraft@mailman.qth.net Date: Wednesday, January 26, 2011, 11:27 AM Did anything change with APF in the latest release ? Seemed to perform better before rev 2.45. Maybe I 'm just loosing my touch. 73 Dave Lear NE5DL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] APF
Hi Barry, I'm curious too. This has come up before. I'd be interested in what you see. 73, Bob K6UJ On Jan 26, 2011, at 3:12 PM, Barry N1EU wrote: Okay, what version of firmware has the original APF that worked better for you guys? I'll try and run a spectral comparison of the two and post the results. I'm skeptical that there's a difference but I'm willing to give it a go. Barry N1EU juergen piezo wrote: I like you cant get the same results with the current release of the APF that I go with the original. -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-tp5963894p5964585.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
