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Re: No Display....no operability
#40m
Side note: are replacement processors available? ?Will Hans read this exchange? ?Thanks. ?
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Re: No Display....no operability
#40m
Ok will do. ?It was fully operational two weeks ago, and was purchased "Built", and not as a kit. ?I just sat down after pulling the cover and checking to see if the long 26-pin chip was seated properly as directed in the builders' manual. ?But, at your suggestion I'll open it ?again and see if there is any chance that the front panel connections appear OK. ?This is a real mystery.....and honestly, quite disappointing as I have a trip planned in a week and really hoped to take this radio along. ?Dang. ?Thanks. ?
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Re: No Display....no operability
#40m
That single row of rectangles means the display hasn't been initialized, and is consistent with a non-functional processor. I suggest you first check all connections to the front panel, and make sure the processor is fully seated.
-- Julian, N4JO. |
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Re: display jig quite dim
#40m
Is this a Mini? If so, be VERY careful with wiring and using the extender, because it carries 12V for the display. If you accidentally short the 12v pin against an adjacent pin, it will almost certainly take out the processor and the display.
-- Julian, N4JO. |
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No Display....no operability
#40m
Well , Crap!!! I have not used my new little QCX+ 40M in two weeks. Just connected it to my regular trusty power supply and a proven antenna....and this is all I get. No display, no menu, no tuning...... Anyone have any ideas what's going on? It's been stored totally disconnected on my desk. I'm stumped.....
Thanks in advance. 73 AG5GW
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Re: display jig quite dim
#40m
Syd that short length of wire will make no difference. Make sure you have good connections and all the pins go to the correct other end points. It will work. I've extended these things 10" away with?no issues... Ron On Wed, Oct 27, 2021 at 3:24 PM Syd via <nhuq1=[email protected]> wrote: I jury rigged 2 headers, male and female, together 3 inches apart so I could take the display off the main board and still see it while no longer attached to the main board and monkeying with the LP filter alignment.? The display works but is quite dim compared to when I directly plug it into the main PCB.? I didn't think that the extra 3 inches of wires would have any effects on the display operation, but obviously that is not the case.? Still can't figure out why the extra 3 inches makes any difference on the performance of the display. |
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Syd, the 20 meter filter almost always needs L3 to be one or two turns less than specified and expanded somewhat. You can verify this by expanding the turns on L3 fully and if the power is still increasing when fully expanded, then remove?one turn and continue. Don't remove more than 2 turns. L2 is usually as specified ?but compressed and L1 is usually as specified but expanded somewhat. The 40 meter filter almost always comes really close with the specified turns. So if your 40 meter one is not working right, ie. very low power and no changing, then you need to check the soldering and do a continuity test from the BNC connector center pin to the C29 end of L3 and fix any open connections you find. It's a good idea to do this check on both of them. Hope that helps .. 73 .. Ron On Wed, Oct 27, 2021 at 3:13 PM Syd via <nhuq1=[email protected]> wrote: I have two kits (20m & 40m) that need the band pass filters aligned. Hans's tutorial on aligning this section by compressing and decompressing the inductor turns to figure out how many turns to add or subtract from the coils was quite instructive, so I gave it a try on both kits.? I see the power on these kits was 1w and 0.5w so alignment is needed. When I compress the turns on L1 - L4 and measure the rf level for reference on the scope, resulting in the low power,? and then decompress? the turns I never see the output level change either way. On the 40m? unit I removed 5 turns on L1 and got no change in the output.? The 20m kit has less turns to monkey with and easier to compress, so? I'm mainly working on that one first.? Compressing and decompressing the turns on these coils shows no change in output level: very low. The? only thing that I can think of doing now is to go back and add 10 turns to the original 40m unit to see if I'm going in the right direction. |
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Re: QDX
I think I was done with checkout about 2.5 minutes in.? I was hoping one of the receipts (QRP Labs and PayPal) would say exactly when because it would be interesting in a useless sort of way, but they were both processed the next day.? Good deal though.? Most of you will beat me on the air with it anyway.? ?I am busier than a one armed paper hanger, whatever that means.? Enjoy.? Pictures or it didn't happen on Friday when you get yours.? Fred W0FMS? On Wed, Oct 27, 2021, 3:13 PM Mike Besemer - WM4B <mwbesemer@...> wrote:
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Re: QDX
¿ªÔÆÌåÓýLOL! ? Took me a while¡ server kept crashing on me.? Probably 8 minutes in. ? Mike WM4B ? From: [email protected] [mailto:[email protected]] On Behalf Of Fred Spinner ? Same here.? 50001.? That what I get for all my "constructive criticism" in the past I suppose!? :). Still good news?though.? How many seconds after 1800z were you again?? :)? ? Fred W0FMS? ? On Wed, Oct 27, 2021, 3:00 PM Mike Besemer - WM4B <mwbesemer@...> wrote:
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Re: QDX
Same here.? 50001.? That what I get for all my "constructive criticism" in the past I suppose!? :). Still good news?though.? How many seconds after 1800z were you again?? :)? Fred W0FMS? On Wed, Oct 27, 2021, 3:00 PM Mike Besemer - WM4B <mwbesemer@...> wrote:
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Re: QDX
¿ªÔÆÌåÓýHey¡ you cut the line!? ;>) Order #49980 and not a peep! ? Mike WM4B ? From: [email protected] [mailto:[email protected]] On Behalf Of Mike - N5AQM ? Just got ship notification this morning. Order #50150. Says it will be here friday LOL!? |
Keith "Al" AG5GW
Julian N4JO
Ronald Taylor
Fred Spinner
Mike Besemer - WM4B