I just tried reception on the am BC band and 500-KHz but the receiver
seems deaf there. There was mention of using the suto-tuner to improve reception below the BC band, but how is this accomplished? Or is this waiting for firmware to implement? How about Tx capability down there? 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep [hidden email] "Kits made by KL7UW" http://www.kl7uw.com/kits.htm ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Hello Edward,
I observe the same for MF broadcast band here. I can get big signal for local 783KHz AM BC station in my K3 but not KX3. TNX & 73, Johnny VR2XMC ________________________________ 寄件人︰ Edward R. Cole <[hidden email]> 收件人︰ [hidden email] 傳送日期︰ 2012年07月7日 (週六) 4:33 PM 主題︰ [Elecraft] KX3: use at <500-KHz I just tried reception on the am BC band and 500-KHz but the receiver seems deaf there. There was mention of using the suto-tuner to improve reception below the BC band, but how is this accomplished? Or is this waiting for firmware to implement? How about Tx capability down there? 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep [hidden email] "Kits made by KL7UW" http://www.kl7uw.com/kits.htm ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
In reply to this post by Edward R Cole
Art,
Thanks for your report. Tonight I connected my 600m band inverted-L and found I could copy am BC stations local and in Anchorage 70-mi away. I also could copy the ADIS station on 380-KHz and the RGPS beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it registered about S4 on the KX3. So with a 20-dB preamp sensitivity probably can be restored on 630m. The final question then is whether the KX3 is capable of transmitting there. I would be satisfied with 0-10 dBm as that is all I need to drive my 100w amp (converted NDB transmitter). I have been received 2800 km away on 495-KHz. 73, Ed - KL7UW At 09:51 AM 7/7/2012, Art Nienhouse wrote: >Ed >My KX3 copies down to .540 ok but the frequency read out is not >accurate the s meter >report is s3 across the broadcast band the copy is ok however. > >Regards >Art >ka9zap > > > >On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>I just tried reception on the am BC band and 500-KHz but the receiver >>seems deaf there. There was mention of using the suto-tuner to >>improve reception below the BC band, but how is this >>accomplished? Or is this waiting for firmware to implement? How >>about Tx capability down there? >> >> 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep [hidden email] "Kits made by KL7UW" http://www.kl7uw.com/kits.htm ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Hello Edward,
For my K3, I got high S meter readings for local MF AM BC stations. However, for my KX3, I bearly got a reading on the S meter for the same station. TNX & 73, Johnny VR2XMC 寄件人︰ Edward R. Cole <[hidden email]> 收件人︰ Art Nienhouse <[hidden email]>; [hidden email] 傳送日期︰ 2012年07月8日 (週日) 3:48 PM 主題︰ Re: [Elecraft] KX3: use at <500-KHz Art, Thanks for your report. Tonight I connected my 600m band inverted-L and found I could copy am BC stations local and in Anchorage 70-mi away. I also could copy the ADIS station on 380-KHz and the RGPS beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it registered about S4 on the KX3. So with a 20-dB preamp sensitivity probably can be restored on 630m. The final question then is whether the KX3 is capable of transmitting there. I would be satisfied with 0-10 dBm as that is all I need to drive my 100w amp (converted NDB transmitter). I have been received 2800 km away on 495-KHz. 73, Ed - KL7UW At 09:51 AM 7/7/2012, Art Nienhouse wrote: >Ed >My KX3 copies down to .540 ok but the frequency read out is not >accurate the s meter >report is s3 across the broadcast band the copy is ok however. > >Regards >Art >ka9zap > > > >On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>I just tried reception on the am BC band and 500-KHz but the receiver >>seems deaf there. There was mention of using the suto-tuner to >>improve reception below the BC band, but how is this >>accomplished? Or is this waiting for firmware to implement? How >>about Tx capability down there? >> >> 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep [hidden email] "Kits made by KL7UW" http://www.kl7uw.com/kits.htm ====================================== ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Johnny,
Here is a related statement by Wayne made yesterday on the KX3 Yahoo group list. ----------------------------------------------- I frequently use the KX3 in the BC band. I can clearly copy all the same stations with the KX3 that I can hear using other AM- capable radios at my QTH. The KX3's receive sensitivity does fall off by design below about 1.5 MHz (as described below), but in many cases you don't need a lot of sensitivity here due to high atmospheric noise. The exception, of course, is if you're a serious BC-band SWL. In that case you might want to consider a simple broadcast-band receiving converter using an IF of say 7 MHz. The KX3 provides up to 9 built-in transverter bands, one of which could be programmed for this purpose so the VFO would still display the actual target frequencies. 73, Wayne N6KR --------------------------------------------- I did not copy his "described below" text in the interest of brevity. Check the Yahoo group posts if you are interested in all the reasons. 73, Don W3FPR On 7/8/2012 8:46 AM, Johnny Siu wrote: > Hello Edward, > > For my K3, I got high S meter readings for local MF AM BC stations. However, for my KX3, I bearly got a reading on the S meter for the same station. > > > TNX & 73, > > > Johnny VR2XMC > > 寄件人︰ Edward R. Cole <[hidden email]> > 收件人︰ Art Nienhouse <[hidden email]>; [hidden email] > 傳送日期︰ 2012年07月8日 (週日) 3:48 PM > 主題︰ Re: [Elecraft] KX3: use at <500-KHz > > Art, > > Thanks for your report. Tonight I connected my 600m band inverted-L > and found I could copy am BC stations local and in Anchorage 70-mi > away. I also could copy the ADIS station on 380-KHz and the RGPS > beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it > registered about S4 on the KX3. > > So with a 20-dB preamp sensitivity probably can be restored on > 630m. The final question then is whether the KX3 is capable of > transmitting there. I would be satisfied with 0-10 dBm as that is > all I need to drive my 100w amp (converted NDB transmitter). > > I have been received 2800 km away on 495-KHz. > > 73, Ed - KL7UW > > At 09:51 AM 7/7/2012, Art Nienhouse wrote: >> Ed >> My KX3 copies down to .540 ok but the frequency read out is not >> accurate the s meter >> report is s3 across the broadcast band the copy is ok however. >> >> Regards >> Art >> ka9zap >> >> >> >> On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>> I just tried reception on the am BC band and 500-KHz but the receiver >>> seems deaf there. There was mention of using the suto-tuner to >>> improve reception below the BC band, but how is this >>> accomplished? Or is this waiting for firmware to implement? How >>> about Tx capability down there? >>> >>> > > 73, Ed - KL7UW, WD2XSH/45 > ====================================== > BP40IQ 500 KHz - 10-GHz www.kl7uw.com > EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? > DUBUS Magazine USA Rep [hidden email] > "Kits made by KL7UW" http://www.kl7uw.com/kits.htm > ====================================== > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Thanks, Don, I don't realise KX3 is less sensitive than K3 in listening to loocal AM BC stations.
TNX & 73, Johnny VR2XMC ________________________________ 寄件人︰ Don Wilhelm <[hidden email]> 收件人︰ Johnny Siu <[hidden email]> 副本(CC)︰ Edward R. Cole <[hidden email]>; "[hidden email]" <[hidden email]> 傳送日期︰ 2012年07月8日 (週日) 9:22 PM 主題︰ Re: [Elecraft] KX3: use at <500-KHz Johnny, Here is a related statement by Wayne made yesterday on the KX3 Yahoo group list. ----------------------------------------------- I frequently use the KX3 in the BC band. I can clearly copy all the same stations with the KX3 that I can hear using other AM- capable radios at my QTH. The KX3's receive sensitivity does fall off by design below about 1.5 MHz (as described below), but in many cases you don't need a lot of sensitivity here due to high atmospheric noise. The exception, of course, is if you're a serious BC-band SWL. In that case you might want to consider a simple broadcast-band receiving converter using an IF of say 7 MHz. The KX3 provides up to 9 built-in transverter bands, one of which could be programmed for this purpose so the VFO would still display the actual target frequencies. 73, Wayne N6KR --------------------------------------------- I did not copy his "described below" text in the interest of brevity. Check the Yahoo group posts if you are interested in all the reasons. 73, Don W3FPR On 7/8/2012 8:46 AM, Johnny Siu wrote: > Hello Edward, > > For my K3, I got high S meter readings for local MF AM BC stations. However, for my KX3, I bearly got a reading on the S meter for the same station. > > > TNX & 73, > > > Johnny VR2XMC > > 寄件人︰ Edward R. Cole <[hidden email]> > 收件人︰ Art Nienhouse <[hidden email]>; [hidden email] > 傳送日期︰ 2012年07月8日 (週日) 3:48 PM > 主題︰ Re: [Elecraft] KX3: use at <500-KHz > > Art, > > Thanks for your report. Tonight I connected my 600m band inverted-L > and found I could copy am BC stations local and in Anchorage 70-mi > away. I also could copy the ADIS station on 380-KHz and the RGPS > beacon 3-mi away (usually a whopping -30 dBm on the SDR-IQ). it > registered about S4 on the KX3. > > So with a 20-dB preamp sensitivity probably can be restored on > 630m. The final question then is whether the KX3 is capable of > transmitting there. I would be satisfied with 0-10 dBm as that is > all I need to drive my 100w amp (converted NDB transmitter). > > I have been received 2800 km away on 495-KHz. > > 73, Ed - KL7UW > > At 09:51 AM 7/7/2012, Art Nienhouse wrote: >> Ed >> My KX3 copies down to .540 ok but the frequency read out is not >> accurate the s meter >> report is s3 across the broadcast band the copy is ok however. >> >> Regards >> Art >> ka9zap >> >> >> >> On 7/7/2012 3:33 AM, Edward R. Cole wrote: >>> I just tried reception on the am BC band and 500-KHz but the receiver >>> seems deaf there. There was mention of using the suto-tuner to >>> improve reception below the BC band, but how is this >>> accomplished? Or is this waiting for firmware to implement? How >>> about Tx capability down there? >>> >>> > > 73, Ed - KL7UW, WD2XSH/45 > ====================================== > BP40IQ 500 KHz - 10-GHz www.kl7uw.com > EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? > DUBUS Magazine USA Rep [hidden email] > "Kits made by KL7UW" http://www.kl7uw.com/kits.htm > ====================================== > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net/ > Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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