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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Vince Vielhaber
I figured as much which is why I didn't push disconnecting the antenna.
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Vince. Thanks Gordon???? --
Michigan VHF Corp. |
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Re: Pelican cases
Vince Vielhaber
Have you seen a flyer that has it for less than 9.99? If so, I'm
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interested! I know it's on sale right now (without the coupon) for 14.99 but even with the 20% off coupon (on the sale price) it's still 11.99 and 11.25 with a 25% off coupon. Vince. I saw the case at HF when it was on sale and it looks pretty good. I have --
Michigan VHF Corp. |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Jack Purdum
I must have missed the URL for the video, so I thought I'd check the old posts. This thread has over 270 posts, so can someone repeat the video URL? Thanks! Jack, W8TEE From: K9HZ <bill@...> To: [email protected] Sent: Thursday, December 21, 2017 12:23 AM Subject: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Follow it through with the video. ?You will isolate the problem(s). ?Its almost fool-proof. ?Make a list and we can help you fix the problem areas.? Dr.?William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton - J68HZ Soufriere, St. Lucia W.I. Rent it: email:??bill@... ?
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Re: uBITX Questions
One thing's for sure, we can tell who reads the traffic via email and who reads on-line as a forum. hihihi
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We've got plenty of copies now. /g/BITX20/message/36152 /g/BITX20/message/36638 /g/BITX20/message/36695 And your PDF. 73, Andy On Thu, Dec 21, 2017 at 05:17 am, Kevin Luxford wrote: Hi Ashar and All, |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Vince Vielhaber
Nothing to be sorry about... New job is retirement!!!
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Vince. Vince, --
Michigan VHF Corp. |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Thanks Gordon??
Yes, I'm exceedingly cautious. Look at it from my perspective, guys: I've been a ham for about 3 months. When I got into ham radio, I didn't even know what Flux was. I could solder two wires together, but it'd take me about 30 minutes and I'd get melted solder everywhere. I bought a soldering kit when I was studying for tech and general. I taught myself how to solder using YouTube videos and learned how to solder surface mount and on pcbs in general?? I then repaired a broken Yaesu VX-6R by replacing a ceramic filter. I studied for extra, passed,and thought I might be ready for something like this. Clearly, I was wrong.....well, no...I won't say that. I will say that clearly I didn't have the skills to troubleshoot one of these....but, if I didn't start somewhere, then I'd never have those skills. So here I am. 4 months ago, soldering 2 wires together was almost too difficult.? I think it's understandable that I'm afraid to do anything at this point...afraid I'll mess even more things up, because I don't know if this is my fault or not |
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Re: Pelican cases
Jack Purdum
I saw the case at HF when it was on sale and it looks pretty good. I have a slightly larger Pelican and it has a more "finished" look, but as far as being watertight and durable, there's no substantive difference that I can see. Check their flyer, as the coupon was for a sale price of $9.99. Jack, W8TEE From: Vince Vielhaber <vev@...> To: [email protected] Sent: Thursday, December 21, 2017 8:59 AM Subject: Re: [BITX20] Pelican cases Hopefully this will work: I did some comparing of the Pelican 1120 and this one.? This one is a little bigger than the Pelican but the Pelican is also 2x more.? It's probably not as high quality as the Pelican but for our use it's fine.? At least I don't think we need a Mil Spec case! Vince. > You have a link handy? > > Thanks, > Roy > WA0YMH > > On Dec 20, 2017 8:34 PM, "Vince Vielhaber" <vev@...> wrote: > >> >> If anyone's interested in putting their BitX in a Pelican case, Harbor >> Freight is now selling Pelican clones and has the one that's supposed to >> be >> the same as the Pelican 1120 for $9.99 with coupon.? I'm making panels >> for >> the 1150 so I may have to get one of these to make panels for this size >> too.? Either one will hold a BitX comfortably and it's waterproof. >> >> Vince. >> -- >>? Michigan VHF Corp.? ? >>? ? ? ? ? ? ? ? ? ? ? ? ? >> >> >> >> > -- ? Michigan VHF Corp.? ? ? ? ? ? ? ? ? |
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Re: B40 small problem
Jack Purdum
Which RTC clock are you using, since most of them require different coding to be read? If you Google your RTC (e.g., "ds1302 source code"), you'll probably find examples that will work for your chip. If you update the clock every second, you will make other things sluggish. Do you really need to update the clock every second? I would think a granularity of 30 seconds would be good enough for most. Jack, W8TEE From: DaveC <murzim@...> To: [email protected] Sent: Thursday, December 21, 2017 9:00 AM Subject: [BITX20] B40 small problem Hi all, Just finished my B40 build with the RTC install. I get spurious characters on the date time line and the next line on the display, also the frequency change is very sluggish. If I remove the RTC everything seems to be ok. Anyone have any suggestions Dave |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Hi Gordon,
Just scanned through some replies in this topic and found your earlier (#8) on the 12Mhz. Did not find the confirmation. As all other signals direct or indirect are heard this is the one and only missing. Not much can go wrong just holding a piece of coax NEAR the board. And when slowly approaching towards the board even less. Can imagine him being cautious not to harm his other equipment. Managed to get Tom W5KUB get his DDS working and reverting the dds from 4.9-4.5 remotely last Christmas. Did not have the BITX40 at that time and using teamviewer and a lot of night work we managed to get it going. Even the first attempts to get CW incorporated into the sketch. Allard kindly took over improving the software last year, did not have the time nor the full expertise to get that far. But getting this close and having to wait until after Christmas...... Merry Christmas and a healthy 2018 to you all ! Ron - PA3FAT -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Gordon Gibby Verzonden: 21 December, 2017 16:28 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Hi fellows.............. No, we never got the 12 MHz signal investigated. Tausciam appears to be an exceedlingly CAUTIOUS fellow, and he wasn't willing to do "sniffing" with his only known-good rig an expesnive yaesu.....can't blame him if I were new at this....and the 12 MHz signal doesn't have the advantage of huge WIRING or a LARGE CIRUIT BOARD to act like antenna..... so he never heard it. I'm not sure why some have concluded that the Raduinio is guaranteed to be broken--- when he was able to hear the 26MHz signal! That would have been created by the Raduino and woud suggest the Si5351 was able to synthesize at least some frequencies --- then he furthered that by picking up several signals in the 4.8-4.9 range --- THROUGH AN EXTERIOR DIPOLE OUTSIDE HIS HOUSE and against background atmosspheric noise and other signals.... Something seems to happen when it gets PLUGGED INTO the bitx and we can't be certain of what. y'alls investigations so far haven't found any explanation for shorting out or whatnot---but it still might be happening. We're all a bit limited because Tausciam is doing the best he is willing and knowledgeable enough to do and that level is growing, but still not quite able to test some things yall (and I) would like to see happen. Who knows, maybe I'll be able to do a few more tests when the rig arrives and publish the results and y'all can guide us expertly and efficiently to the cure. I was helping out someone recently and when I finally got to SEE what they were doing.....there were a zillion little issues they were having that had not even yet risen to the surface....when we conquered those, they wre able to make a lot mmore progress. A 2nd set of eyeballs here might help, might not, we'll see soon. Another thing: once Tausciam has TWO working rigs in his house, and I may be able to add a few shunt options to the bandpass filter --- he may become much more willing to "sniff" using a castaway Bitx40 for his sniffing receiver! I think his detective skills will jump several more levels in the coming month or so. And his daughter is soon having a working rig and they'll get use d to the little idiosyncracies of the bitx platform and be more able to deal with whatever we're able to get working. Ah, patience & forebearance --- what virtues, and so many times I've not exhibited them!!! ________________________________________ From: [email protected] <[email protected]> on behalf of ron van doremalen (PA3FAT) <ronvandoremalen@...> Sent: Thursday, December 21, 2017 10:17 AM To: [email protected] Subject: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Vince, Read that, but hope we still have time to inspect 12Mhz before he goes to the post office ? Just watched the trouble shooting video, nothing about checking 12Mhz. The L5 seems a piece of wire. C103.....where is it.... OT: Last day : switching jobs? If so have fun in your new job if that is the case, if not, sorry ! -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 16:10 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah We won't be finding out much of anything for a few days, at least. He's sending it to Gordon per Gordon's post a little while ago. Vince. Vince, Found a small picture that indeed shows C103 and L5 are no longer visible on the board. Let's see if we can identify if there is a 12Mhz signal. If he hears 4.5-4.9 (even weak) that's the only missing signal so far. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 16:03 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Depending how new the BitX is, there may not be a variable cap. It was eliminated at some point, although still on the schematic. Not sure what/where L5 is, I no longer have the schematic on this computer. Today's my last real day so it's all cleaned off. Vince. Measure the values of Q10 and Q11 on all three legs of the transistor. Could give indication if supply voltage is ok at that point, and if the transitors are bad. Is C103 the variable capacitor looking ok? L5 inductor looking ok, no loose at any end, e.g. broken wire? These are all involved in the 12Mhz oscillator. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:54 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Was remark nr 8 by think Gordon indeed. If the 12Mhz is not working it will do nothing. Using external antenna is not the way to go. Just take piece of coax with PL259 put into the monitoring radio (any HF general coverage receiver will do, even any radio cable of receiving shortwaves as long as 5Mhz and 12Mhz are on it). Extend the other end of the cabling near the Raduino board. A short piece of inner cabling from the coax made blank. 3-5 cm (1-2 inch) open and not connected to the braid. You should be able to hear 12Mhz and 4.5-4.9Mhz clearly on the received. If one of them is missing, you found the cause of the malfunctioning, at least are getting very very close. Ron - PA3FAT -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 15:49 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah We never got that far since we weren't getting anything out of the raduino, or not that we could tell. It was one of the tests Gordon wanted him to do but it didn't happen. Vince. Did we verify that the 12mhz signal is working, did we hear this? If this crystal isn???????€??????€???t working we can generate any signal into the BITX40 but we will have no luck receiving anything as there will me nothing to mix with. Ron ???????€?????????¡° PA3FAT Van: [email protected] [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:31 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah C6 is indeed supplying the dds signal to the bitx40. Clk1 is unused and not doing anything in this radio. uBitx probably will use this. You still have L4 on your board where the bitx40 is connected to the DDS? Or is this space already empty on the newer boards? If you hear the 4.5-4.9 signal how close is the antenna cabling into your monitoring radio away from the DDS board? Does nearing (NOT touching) the DDS board increase the signal? Still the C6 is a concern in soldering???????€??????????????€???????leaving very little wire to act as an antenne to receive the 4.5-4.9 signal into the monitoring radio. Could you post a picture of the display so we can see where the display is stating the receive frequency on the BITX40. Assume 7-7.4 Mhz. Ron ???????€?????????¡° PA3FAT Van: [email protected]<mailto:[email protected]> [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:20 Aan: [email protected]<mailto:[email protected]> Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Tausciam, Would you be able to inspect the bottom of where the DDS enters the BITX? So we are sure there is not shorting there? Or maybe just make some picture of the top where you connected the connector with the black/brown coming from the DDS board (from the connector on the back of the Raduino)? In the meantime will check the schematics if CLK0 pin and C6 are the ones going towards the BITX40 (again). Ron ???????€?????????¡° PA3FAT Van: [email protected]<mailto:[email protected]> [mailto:[email protected]] Namens tausciam@...<mailto:tausciam@...> Verzonden: 21 December, 2017 15:02 Aan: [email protected]<mailto:[email protected]> Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah On Thu, Dec 21, 2017 at 05:51 am, ron van doremalen (PA3FAT) wrote: Could you verify underneath the bitx board where the DDS signal get???????€??????€???s into the board that there is no shorting of the pins? And it is not accidently connected backwards (probably the connector prohibits this???????€???????.) Something is reducing your generated signal if you hear something on 4.5-4.9 Mhz it is the only option left. You need more signal that???????€??????€???s sure. The board is raised up with the standoffs. Nothing can touch it. As far as being connected backwards, there are two grooves on the edges of the connectors. They fit on rails on the board. So no...can't be accidentally flipped and fit. You can hear the signal, but only if you force the raduino to output at that signal. If you try to tune the raduino and hear a signal, you don't hear one anywhere. -- Michigan VHF Corp.
-- Michigan VHF Corp.
-- Michigan VHF Corp. |
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Re: uBITX works!
While digging for parts to build the little 2N7000 key interface, I came across a "Ham Gadgets"? mini keying adapter which was originally designed to allow a low current keyer to work with old Cathode keyed and high current MOPA solid state rigs that had keying currents over 100 milliamps.? Just perfect for checking this out.
Wired it up so I could plug my bug into the uBITX through it.? Baseline test, hooked the bug up direct first.? Keying was terrible and kept throwing garbage into the characters.? I put a .1uf capacitor across the bug as a quick & dirty contact bounce filter which helped a little but didn't cure it.? Next, hooked up the keying adapter and WOW what a difference.? There was still a little bounce problem but a .1uF cap right at the input to the adapter fixed it.? Might have been a bit of RF getting into the adapter through the keying line as I don't have the adapter in a shielded box, just open board on the desk top.? It appears that the problem with the hand key circuit is contact resistance in some keys is sufficient to upset the sensing in the uBITX and will vary from key to key, with length cable and gauge of wire and a whole bunch of other variables.? In my case it appears the solution is to even the playing field by using a simple transistor switch to present as close to zero resistance between the A4 and ground on "Key Down" intervals. I can now use my old bug with the uBITX and work on a simple transistor interface for the key paddle inputs as well.? This would give consistent resistance from the paddle inputs to ground which would help the ADC read the voltage drop across the dot and dash voltage dividers.? Just my opinion, but I intend to breadboard a simple circuit to test that theory as well. Jim Sheldon - W0EB |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Gordon Gibby
Hi fellows..............
No, we never got the 12 MHz signal investigated. Tausciam appears to be an exceedlingly CAUTIOUS fellow, and he wasn't willing to do "sniffing" with his only known-good rig an expesnive yaesu.....can't blame him if I were new at this....and the 12 MHz signal doesn't have the advantage of huge WIRING or a LARGE CIRUIT BOARD to act like antenna..... so he never heard it. I'm not sure why some have concluded that the Raduinio is guaranteed to be broken--- when he was able to hear the 26MHz signal! That would have been created by the Raduino and woud suggest the Si5351 was able to synthesize at least some frequencies --- then he furthered that by picking up several signals in the 4.8-4.9 range --- THROUGH AN EXTERIOR DIPOLE OUTSIDE HIS HOUSE and against background atmosspheric noise and other signals.... Something seems to happen when it gets PLUGGED INTO the bitx and we can't be certain of what. y'alls investigations so far haven't found any explanation for shorting out or whatnot---but it still might be happening. We're all a bit limited because Tausciam is doing the best he is willing and knowledgeable enough to do and that level is growing, but still not quite able to test some things yall (and I) would like to see happen. Who knows, maybe I'll be able to do a few more tests when the rig arrives and publish the results and y'all can guide us expertly and efficiently to the cure. I was helping out someone recently and when I finally got to SEE what they were doing.....there were a zillion little issues they were having that had not even yet risen to the surface....when we conquered those, they wre able to make a lot mmore progress. A 2nd set of eyeballs here might help, might not, we'll see soon. Another thing: once Tausciam has TWO working rigs in his house, and I may be able to add a few shunt options to the bandpass filter --- he may become much more willing to "sniff" using a castaway Bitx40 for his sniffing receiver! I think his detective skills will jump several more levels in the coming month or so. And his daughter is soon having a working rig and they'll get use d to the little idiosyncracies of the bitx platform and be more able to deal with whatever we're able to get working. Ah, patience & forebearance --- what virtues, and so many times I've not exhibited them!!! ________________________________________ From: [email protected] <[email protected]> on behalf of ron van doremalen (PA3FAT) <ronvandoremalen@...> Sent: Thursday, December 21, 2017 10:17 AM To: [email protected] Subject: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Vince, Read that, but hope we still have time to inspect 12Mhz before he goes to the post office ? Just watched the trouble shooting video, nothing about checking 12Mhz. The L5 seems a piece of wire. C103.....where is it.... OT: Last day : switching jobs? If so have fun in your new job if that is the case, if not, sorry ! -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 16:10 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah We won't be finding out much of anything for a few days, at least. He's sending it to Gordon per Gordon's post a little while ago. Vince. Vince, Found a small picture that indeed shows C103 and L5 are no longer visible on the board. Let's see if we can identify if there is a 12Mhz signal. If he hears 4.5-4.9 (even weak) that's the only missing signal so far. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 16:03 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Depending how new the BitX is, there may not be a variable cap. It was eliminated at some point, although still on the schematic. Not sure what/where L5 is, I no longer have the schematic on this computer. Today's my last real day so it's all cleaned off. Vince. Measure the values of Q10 and Q11 on all three legs of the transistor. Could give indication if supply voltage is ok at that point, and if the transitors are bad. Is C103 the variable capacitor looking ok? L5 inductor looking ok, no loose at any end, e.g. broken wire? These are all involved in the 12Mhz oscillator. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:54 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Was remark nr 8 by think Gordon indeed. If the 12Mhz is not working it will do nothing. Using external antenna is not the way to go. Just take piece of coax with PL259 put into the monitoring radio (any HF general coverage receiver will do, even any radio cable of receiving shortwaves as long as 5Mhz and 12Mhz are on it). Extend the other end of the cabling near the Raduino board. A short piece of inner cabling from the coax made blank. 3-5 cm (1-2 inch) open and not connected to the braid. You should be able to hear 12Mhz and 4.5-4.9Mhz clearly on the received. If one of them is missing, you found the cause of the malfunctioning, at least are getting very very close. Ron - PA3FAT -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 15:49 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah We never got that far since we weren't getting anything out of the raduino, or not that we could tell. It was one of the tests Gordon wanted him to do but it didn't happen. Vince. Did we verify that the 12mhz signal is working, did we hear this? If this crystal isn???????€??????€???t working we can generate any signal into the BITX40 but we will have no luck receiving anything as there will me nothing to mix with. Ron ???????€?????????¡° PA3FAT Van: [email protected] [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:31 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah C6 is indeed supplying the dds signal to the bitx40. Clk1 is unused and not doing anything in this radio. uBitx probably will use this. You still have L4 on your board where the bitx40 is connected to the DDS? Or is this space already empty on the newer boards? If you hear the 4.5-4.9 signal how close is the antenna cabling into your monitoring radio away from the DDS board? Does nearing (NOT touching) the DDS board increase the signal? Still the C6 is a concern in soldering???????€??????????????€???????leaving very little wire to act as an antenne to receive the 4.5-4.9 signal into the monitoring radio. Could you post a picture of the display so we can see where the display is stating the receive frequency on the BITX40. Assume 7-7.4 Mhz. Ron ???????€?????????¡° PA3FAT Van: [email protected]<mailto:[email protected]> [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:20 Aan: [email protected]<mailto:[email protected]> Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Tausciam, Would you be able to inspect the bottom of where the DDS enters the BITX? So we are sure there is not shorting there? Or maybe just make some picture of the top where you connected the connector with the black/brown coming from the DDS board (from the connector on the back of the Raduino)? In the meantime will check the schematics if CLK0 pin and C6 are the ones going towards the BITX40 (again). Ron ???????€?????????¡° PA3FAT Van: [email protected]<mailto:[email protected]> [mailto:[email protected]] Namens tausciam@...<mailto:tausciam@...> Verzonden: 21 December, 2017 15:02 Aan: [email protected]<mailto:[email protected]> Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah On Thu, Dec 21, 2017 at 05:51 am, ron van doremalen (PA3FAT) wrote: Could you verify underneath the bitx board where the DDS signal get???????€??????€???s into the board that there is no shorting of the pins? And it is not accidently connected backwards (probably the connector prohibits this???????€???????.) Something is reducing your generated signal if you hear something on 4.5-4.9 Mhz it is the only option left. You need more signal that???????€??????€???s sure. The board is raised up with the standoffs. Nothing can touch it. As far as being connected backwards, there are two grooves on the edges of the connectors. They fit on rails on the board. So no...can't be accidentally flipped and fit. You can hear the signal, but only if you force the raduino to output at that signal. If you try to tune the raduino and hear a signal, you don't hear one anywhere. -- Michigan VHF Corp. -- Michigan VHF Corp. -- Michigan VHF Corp. |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Vince,
Read that, but hope we still have time to inspect 12Mhz before he goes to the post office ? Just watched the trouble shooting video, nothing about checking 12Mhz. The L5 seems a piece of wire. C103.....where is it.... OT: Last day : switching jobs? If so have fun in your new job if that is the case, if not, sorry ! -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 16:10 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah We won't be finding out much of anything for a few days, at least. He's sending it to Gordon per Gordon's post a little while ago. Vince. Vince, -- Michigan VHF Corp. |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Vince Vielhaber
We won't be finding out much of anything for a few days, at least. He's
toggle quoted message
Show quoted text
sending it to Gordon per Gordon's post a little while ago. Vince. Vince, --
Michigan VHF Corp. |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Vince,
Found a small picture that indeed shows C103 and L5 are no longer visible on the board. Let's see if we can identify if there is a 12Mhz signal. If he hears 4.5-4.9 (even weak) that's the only missing signal so far. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 16:03 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Depending how new the BitX is, there may not be a variable cap. It was eliminated at some point, although still on the schematic. Not sure what/where L5 is, I no longer have the schematic on this computer. Today's my last real day so it's all cleaned off. Vince. Measure the values of Q10 and Q11 on all three legs of the transistor. -- Michigan VHF Corp. |
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Re: uBITX works!
¿ªÔÆÌåÓýGood ideas. To confirm your hunch, my keyer has a 2N7000 output stage and it works cleanly so you might be on the right track. Also, is yours packaged up or are you haywiring it for testing
like i did? Possible RF pickup on the Radunio lines which might be
reduced when packaged and leads trimmed. John K0JD On 12/21/2017 08:19, Jim Sheldon wrote:
John (and all), |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Vince Vielhaber
Depending how new the BitX is, there may not be a variable cap. It was
toggle quoted message
Show quoted text
eliminated at some point, although still on the schematic. Not sure what/where L5 is, I no longer have the schematic on this computer. Today's my last real day so it's all cleaned off. Vince. Measure the values of Q10 and Q11 on all three legs of the transistor. --
Michigan VHF Corp. |
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Re: Help! I think I may have just ruined my 9 year old's Chanukah
Measure the values of Q10 and Q11 on all three legs of the transistor. Could give indication if supply voltage is ok at that point, and if the transitors are bad.
Is C103 the variable capacitor looking ok? L5 inductor looking ok, no loose at any end, e.g. broken wire? These are all involved in the 12Mhz oscillator. -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens ron van doremalen (PA3FAT) Verzonden: 21 December, 2017 15:54 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah Was remark nr 8 by think Gordon indeed. If the 12Mhz is not working it will do nothing. Using external antenna is not the way to go. Just take piece of coax with PL259 put into the monitoring radio (any HF general coverage receiver will do, even any radio cable of receiving shortwaves as long as 5Mhz and 12Mhz are on it). Extend the other end of the cabling near the Raduino board. A short piece of inner cabling from the coax made blank. 3-5 cm (1-2 inch) open and not connected to the braid. You should be able to hear 12Mhz and 4.5-4.9Mhz clearly on the received. If one of them is missing, you found the cause of the malfunctioning, at least are getting very very close. Ron - PA3FAT -----Oorspronkelijk bericht----- Van: [email protected] [mailto:[email protected]] Namens Vince Vielhaber Verzonden: 21 December, 2017 15:49 Aan: [email protected] Onderwerp: Re: [BITX20] Help! I think I may have just ruined my 9 year old's Chanukah We never got that far since we weren't getting anything out of the raduino, or not that we could tell. It was one of the tests Gordon wanted him to do but it didn't happen. Vince. Did we verify that the 12mhz signal is working, did we hear this? -- Michigan VHF Corp. |
Arvo W0VRA
Jim Sheldon
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