Re: [Elecraft] General Coverage Module (K3)
Hunter, My instinct would be to remove and re-seat that board. That could solve the problem. A defect in the board is unlikely. All this assumes you have the correct mode in your K3 (e.g., not listening to BC band in CW mode). 73, Phil W7OX On 6/6/16 1:40 PM, Hunter Ellington wrote: I have the General Coverage Module in my K3, serial number 6969. Recently, whenever I listen to the broadcast band, the signals will drop out, or significantly down and an occasion audio will distort. I do not notice this in any other mode, or on the ham bands. Any thoughts? Hunter Ellington, K0GFY Sent using Hushmail __ 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 Message delivered to w...@socal.rr.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] General Coverage Module - List Courtesy
> I have the General Coverage Module in my K3, serial number 6969... Any > thoughts? Any??? Any at all??? Yes. I'm thinking: "It would be useful and courteous if postings to this list indicated ***in the SUBJECT line*** to what Elecraft product the posting applies!" Mike / KK5F __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] General coverage bandpass module
Main receiver. Didn't think about it, could move it if a reason came up. Sent from my iPad Chuck, KE9UW (Jack for BMW motorcycles) On Mar 10, 2013, at 9:58 PM, Harlan hsherr...@reagan.com wrote: For those with the sub receiver and only one bandpass module... Which receiver is it assigned to and why did you pick that receiver? Harlan NC3C Sent from my Verizon Wireless 4G LTE DROID __ 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] General coverage bandpa
I put BPF boards in both receivers but if I had only one it would go in the sub RX. 1) I am more likely to use the out of band Rx for listening to the AM Band and using the Sub RX with a separate antenna eliminates the losses associated with the pin diode T/R switch. 2) I am likely to want to use the main RX for normal ham operations while listening to something else (WWV, route weather, SW BC, etc.) and having the second RX available for the SWLing even when using the transceiver normally just makes sense. On the other hand, if I had a need to *transmit* outside the ham bands I would have no choice other than to put the BPF in the main RX. 73, ... Joe, W4TV On 3/11/2013 3:15 PM, Edward R Cole wrote: Harlan, I chose the main receiver since I assumed most casual listening outside the ham bands would not involve both Rx. Also, I use the main receiver on the 500-KHz band for operating with an experimental license. The general coverage board is required to operate out of a ham band in TEST mode. That is how I transmit on the 600 meter band; taking 1mw level RF to drive a modified surplus NDB transmitter (the K3 replaces the original xtal osc.). But I guess it would reduce to a personal decision for deciding which receiver to install it in. 73, Ed - KL7UW From: Harlan hsherr...@reagan.com To: Elecraft Email elecraft@mailman.qth.net Subject: [Elecraft] General coverage bandpass module Message-ID: ryi94mxyxvb12xk8ndr13xd9.1362970670...@email.android.com Content-Type: text/plain; charset=utf-8 For those with the sub receiver and only one bandpass module... Which receiver is it assigned to and why did you pick that receiver? Harlan NC3C __ 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] general coverage receive on KX3
webrehm wrote: The RF band-pass filters are used for both transmit and receive. Filters are selected with low-loss CMOS RF switches. The band pass filters significantly attenuate receive signals at harmonics of the RX frequency, particularly the odd harmonics. This is true. These filters can seriously degrade SWL sensitivity at non-ham band regions. Not true. The band-pass filters overlap, so sensitivity is good on virtually all SWL bands. It may be a few dB worse in isolated cases. 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
Re: [Elecraft] general coverage receive on KX3
I am not talking about the need to desense because of an IF frequency but that the front end ham band filters may still be active when doing SWL. It is my understanding that the K2 can receive SWL but its front end filters are ham band only so if you are between any ham bands the sensitivity falls off, perhaps quite a bit due to the ham band filtering. so I am really asking if the front end filters of the KX3 can change/switch to accomodate SWL across the most common range of 3-16 MHz. tks Dennis -- View this message in context: http://elecraft.365791.n2.nabble.com/general-coverage-receive-on-X3-tp7559086p7559100.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] general coverage receive on KX3
the kx3 manual describes these front end filters as follows The relay-switched low pass filters are used during both transmit and receive. A few of the filters are dedicated to one band but most cover two bands. The signal on the antenna side of the filters pass through a forward/reflected power and SWR bridge to the HF-6 meter antenna jack (BNC), or to the optional KXAT3 automatic antenna tuner. Latching relays are used to minimize power consumption. The RF band-pass filters are used for both transmit and receive. Filters are selected with low-loss CMOS RF switches. The band pass filters significantly attenuate receive signals at harmonics of the RX frequency, particularly the odd harmonics. These filters can seriously degrade SWL sensitivity at non-ham band regions. Wayne or another designer will be able to answer this question if they are watching this. Dennis -- View this message in context: http://elecraft.365791.n2.nabble.com/general-coverage-receive-on-X3-tp7559086p7559112.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] General Coverage Question - K3
I've not got one in my radio but you should be able to hear it click in as you tune well out beyond the edge of a ham band. So maybe put it into really coarse fast tune mode and head off the top end of the 80 meter band until you hear it click into place? You could also pick a frequency way between bands and turn the KBPF3 on/off and compare amplitudes. Keep in mind I believe that you have to power cycle the radio after making changes to options that are installed. ~Brett (KC7OTG) On Sat, 2010-03-20 at 19:00 -0500, Don Cunningham wrote: Well, I have completed K3, s/n 4076 and all checks well at the low power level with one exception. I can't figure out how to put the K3 into general coverage mode so I can see if the KBPF3 is recognized and working. All else I have found, which in itself is amazing to me, hi. I want to check the KBPF3, then install the 100w amp while I'm on a roll!!! By the way, the W2 was a fun build, and works like a champ too!! 73, Don, WB5HAK __ 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] General Coverage Question - K3
Brett, You are a genious, it worked and the KBPF3 lives, hi. That was too simple, I just didn't try tuning out of the ham bands!!! I still have yet to figure out how to do a lot on the rig (like entering a direct frequency), so now I can finish the build with the KPA3 amp. Thanks for your insight, Brett. 73, Don, WB5HAK __ 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] General Coverage Question - K3
Entering a direct freq is easy... Press FREQ ENT (red button high right from the knob). Then use the red numbers to enter the freq (and you can abbreviate). You can put in 14.2 or you can enter 142 and both will put you on the same freq. ~Brett On Sat, 2010-03-20 at 19:17 -0500, Don Cunningham wrote: Brett, You are a genious, it worked and the KBPF3 lives, hi. That was too simple, I just didn't try tuning out of the ham bands!!! I still have yet to figure out how to do a lot on the rig (like entering a direct frequency), so now I can finish the build with the KPA3 amp. Thanks for your insight, Brett. 73, Don, WB5HAK __ 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] General Coverage Question - K3
Well, I was doing it all right, but didn't see the return icon on the keypad. I'm getting too old, Brett, I don't do icons well at all, hi. Thanks once more. I will read the manual, after I finish the build and play, I promise!!! 73, Don, WB5HAK __ 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] General Coverage Question - K3
Get your PA in! I just wanted to make sure you were able to move on as quick as possible... Have fun!!! ~Brett (KC7OTG) On Sat, 2010-03-20 at 19:28 -0500, Don Cunningham wrote: Well, I was doing it all right, but didn't see the return icon on the keypad. I'm getting too old, Brett, I don't do icons well at all, hi. Thanks once more. I will read the manual, after I finish the build and play, I promise!!! 73, Don, WB5HAK __ 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] General Coverage Receive Module
Mike, I believe it can be installed in both receivers - 2 modules would be needed. I like to monitor 10 and 15 mhz. Also like to monitor the 10 meter beacons. I have the general coverage module in the main receiver at present, and am contemplating switching it. Monty K2DLJ I see that the general coverage receiver module can be installed in either the main or sub-receiver. Mike, W4UM __ 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] General Coverage
Bob, It is not abnormal - the amount of out-of-hamband range may be slightly different from one K2 to another. You may be running out of VFO tuning even though the numbers change. If you want to verify, check the voltage at the left end of R30 on the RF board. If it is less than 0.5 volts or much over 7.5 you have run out of range and it will tune no further. 73, Don W3FPR - Original Message - I'm the builder of #4175 and have a question concerning the lower end of the spectrum. I was attempting to listen for the VFO of the 2N22-40+ that I'm building at 2085-2185mhz. I don't hear the VFO nor do I hear anything else down there. I tuned into the AM broadcast band and couldn't hear a single station. Is this normal for the K2 or do I have a problem? ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] General Coverage
That's normal because of the way the dial works. In normal operation the dial readout is not directly related to the VFO frequency. It's what the logic *assumes* would be the frequency, assuming the local oscillator can tune to it. There's no direct measurement of the local oscillator. The local oscillator frequency is only measured in CAL PLL. When you run the CAL PLL, you look up the internal counter to the L.O. output and the K2 logic measures the frequency of the L.O. at various tuning voltage levels. It then creates a table of values that says If a tuning voltage of 'x' volts is applied to the L.O. tuning, then the receiver ought to be tuned to 'y' kHz. And it's that 'y' kHz frequency that is shown on your dial in normal operation. Think of it as an old analog dial with numbers written on the face so you can see what frequency it's tuned to by seeing where the pointer is on the dial. Running CAL PLL tunes the K2 across the tuning range and writes numbers on the dial at intervals so you can see what frequency you are tuned into when you are operating. Unlike the old analog dial, there's no hard stop at each end of the range saying that you can't go farther. It'll just let you keep tuning and tuning and tuning. So, if you tune outside the L.O. range, the numbers will continue to change on the dial, even though the local oscillator can't be tuned to that frequency. Ron AC7AC - Original Message - I'm the builder of #4175 and have a question concerning the lower end of the spectrum. I was attempting to listen for the VFO of the 2N22-40+ that I'm building at 2085-2185mhz. I don't hear the VFO nor do I hear anything else down there. I tuned into the AM broadcast band and couldn't hear a single station. Is this normal for the K2 or do I have a problem? ___ 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/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
