K3 Crystal Filter Installation
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K3 Crystal Filter Installation
 
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Hello,
It would appear as though I have bit off more than I can chew as the saying goes. Today two optional filters arrived and have to be installed. Currently there are 3 filters used (2.8, 2.1 and 400Hz) and they are in positions FL-1, FL-2 and FL-3 I have to add the FM and 6.0Khz filters. I assume (hate that word) that reading the manual I will place the widest filter in FL-1..? (6.0Khz, followed by the FM, 2.8, 2.1 and 400..??) I have also become confused with the values to enter in the Config menu. If anyone can e-mail me direct with some more specific details I would greatly appreciate it. regards, Gary K3/100 #679 -- Stokers...we get ya goin' _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: K3 Crystal Filter Installation
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Actually the FM is the widest filter, and should go in FL-1, followed by the 6.0, etc. If any of the filters are 5-pole filters (bare PCBs with crystals on them) they have a number on them which needs to be entered in the config menu. If you are moving a 5 pole filter you will have to zero out the number you entered at its old position, and re-enter it at the new one. You will then have to go through all the filter entries in the menu to ensure that the K3 knows which filter is installed at each position, and then you will have to specify which filter is enabled for each mode. It's all described at the back of the User Manual.
Julian, G4ILO. K2 #392 K3 #222 KX3 #110
* G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html |
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The easiest way to do the latter is to use the K3 Utility used for downloading new firmware. Click Configuration and Edit Crystal Filters. You can enter everything very quickly without even having to go into the K3's CONFIG menu (or even the Manual). When you're done, click Save K3 Configuration on the Utility's Configuration page and the new filter settings will be stored. 73, Bill |
RE: K3 Crystal Filter Installation
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In reply to this post by Gary Gregory-3
Hi, Gary.
Elecraft recommends installing the filters in descending bandwidth order. Since you have the FM, AM. 2.8, 2.1 and 400 Hz filters (all 8-pole), you should install the filters: 13 KHz FM filter in FL1. This is required, as only FL1 may be used to transmit FM. 6 KHz AM filter in FL2. 2.8 KHz filter in FL3. 2.1 KHz filter in FL4. 400 Hz filter in FL5. Then you can configure the filters either from the K3 front panel's CONFIG menu or you can use the K3 Utility's Crystal Filter Configuration page, which you reach from the Configuration tab, click the "Edit Crystal Filters" button. The K3 Utility Help has an example of one user's settings. In your case, you'll be putting the values 13.00, 6.00, 2.80, 2.10, and 0.40 in the "bandwidth" row for FL1-FL5. All of these are 8-pole filters so you'll put 0.00 in each of the five "freq offset" entries. The K3 Utility Help has a table of suggested "starting point" values for loss compensation (gain), as the narrower filters have more insertion loss than the wider filters. Start with values 0, 0, 0, 2, and 7 for FL1-FL5. You may need to play with these values later so that a steady carrier stays at a more or less constant volume as you adjust the bandwidth. Now there are a set of check boxes to indicate which filters are enabled for receiving. I'd enable all filters for CW, USB, LSB, and Data. The rationale for enabling very narrow filters for USB and SSB is that sometimes you might use these modes in a Data mode context (AFSK?) Enable FL1, FL2, FL3 and FL4 for AM. You might want to use your 2.8 and 2.1 KHz filters when listening to an AM station in a crowded environment. Enable FL1 for FM receive. Then you choose which filter you're going to use for transmit. For CW and SSB, you must use the 2.8 KHz filter, so select FL3. For AM, use FL2, your 6.00 KHz filter. For FM, use the 13.00 KHz filter, which must be in FL1. This isn't really a choice, FM is always transmit-enabled on (only) FL1. Click "Apply" or "OK" and the K3 Utility will send all these choices to the radio. Note that you can do this with the K3's front panel CONFIG menu as well. Some find it easier to use the K3 Utility for this step, but it's certainly not the only way to do it. 73 de Dick, K6KR -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Gary Gregory Sent: Friday, June 13, 2008 1:10 AM To: [hidden email] Subject: [Elecraft] K3 Crystal Filter Installation Hello, It would appear as though I have bit off more than I can chew as the saying goes. Today two optional filters arrived and have to be installed. Currently there are 3 filters used (2.8, 2.1 and 400Hz) and they are in positions FL-1, FL-2 and FL-3 I have to add the FM and 6.0Khz filters. I assume (hate that word) that reading the manual I will place the widest filter in FL-1..? (6.0Khz, followed by the FM, 2.8, 2.1 and 400..??) I have also become confused with the values to enter in the Config menu. If anyone can e-mail me direct with some more specific details I would greatly appreciate it. regards, Gary K3/100 #679 -- Stokers...we get ya goin' _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: [hidden email] 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 |
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In reply to this post by Julian, G4ILO
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What's the hold up at Elecraft to start shipping the second receiver option? It's been over a month since they've sent a bunch of them out in the field for Beta testing. Is there any problems or ?
73 from Fern with K3. _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In a recent message, Fern Rivard <[hidden email]> wrote ...
> What's the hold up at Elecraft to start shipping the second >receiver option? It's been over a month since they've sent a bunch of >them out in the field for Beta testing. Is there any problems or ? > 73 from Fern with K3. There is a full update on the Elecraft K3 shipping web site, Fern.... "The only other gating items for full production are receipt of the next batch of KRX3 enclosures and several small parts. If everything stays on track we will begin shipping production KRX3s on volume on or before the week of June 23rd. " 73 -- David G4DMP Leeds, England, UK ------ _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Fern Rivard
I was told that my order placed in September for the 2nd rcv should ship in
about 4 to 6 weeks. -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Fern Rivard Sent: Friday, June 13, 2008 9:46 PM To: [hidden email] Subject: [Elecraft] re second rcvr option for K3 What's the hold up at Elecraft to start shipping the second receiver option? It's been over a month since they've sent a bunch of them out in the field for Beta testing. Is there any problems or ? 73 from Fern with K3. _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: [hidden email] 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 |
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