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Re: ND6T AGC implementation for uBIT-X
¿ªÔÆÌåÓýShipping all orders for say? VK to one group member,who then distributes them via the domestic mail service has worked well in the past but we would need to know the size,weight etc of typical orders, and also the cost of mailing the bulk order from Texas to know whether the arrangement is viable. Auspost rates have increased considerably since I last did this. On the other hand, I have succssfully received small pcbs and smd components for them from Mike Hagen WA6ISP that were simply taped to a piece of light card and then posted in a normal envelope, using a USPS international stmp and an extra ounce stamp. Bill, VK7MX On 4/05/2018 11:08 AM, Kees T wrote:
A list of potential orders as of 5/3/2018 at 7:30 PM local time has been uploaded to the FILES section under my call? K5BCQ. The total is surprisingly high (250+) for just starting out, but very manageable. If you want to make corrections or additions, email me directly at? K5BCQ(at)ARRL.net? (to keep from overloading this "topic") and I'll update the spreadsheet. |
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Re: 45Mhz crystal filter specification
I don't think you are seeing the LO frequency on the scan. You are
seeing a mixing product. The scan shows spurious responses at about 8Mhz, 18Mhz, and 31Mhz. I'll check the other LO and the BFO to see what frequencies they show. It might be that the 5351 is hosed. I haven't tried the base software to see what happens. That is something else I can do. Till I figure out what is happening with the 45Mhz IF there isn't much use in moving down the chain. tim ab0wr On Thu, 03 May 2018 18:26:11 -0700 "ajparent1/KB1GMX" <kb1gmx@...> wrote: Something is mighty fishy. |
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Re: 45Mhz crystal filter specification
Allison,
I just set the markers manually using eyesight. I don't know if they are exactly on frequency or not. Tomorrow I'll let the SA do a peak search and see what the actual frequencies are. No RIT or PBT. Since I'm looking at the output of the first mixer, the VFO is the only frequency that applies. I'm using a cheap MH5200 signal generator so I won't guarantee it's accuracy. I'll rerun the test tomorrow and see what comes up. tim ab0wr On Thu, 03 May 2018 18:13:01 -0700 "ajparent1/KB1GMX" <kb1gmx@...> wrote: The 45mhz filter is rather narrow If memory serves its a 15khz (wide) |
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Re: Arduino Projects...
Jack Purdum
I bought an original SW40 kit about two months ago, and it's sitting on the shelf staring at me. As soon as the JackAl project is done, that's the first thing I'm going to build. And thanks for the BD wishes and kind words...they are appreciated!
Jack, W8TEE
On Thursday, May 3, 2018, 10:23:00 PM EDT, Kelly Jack <kellyjack1968@...> wrote:
Jack, couldn't agree more about building your own stuff and CW. Just finished a small wonder labs sw40 (Midway electronics version) and its been getting way more airtime than my appliance rig. And Happy Birthday!! Thanks for your contributions to this and other forums. Always good to have experts sharing their knowledge. Regards Simon VK3ELH? |
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Re: Arduino Projects...
Jack, couldn't agree more about building your own stuff and CW. Just finished a small wonder labs sw40 (Midway electronics version) and its been getting way more airtime than my appliance rig.
And Happy Birthday!! Thanks for your contributions to this and other forums. Always good to have experts sharing their knowledge. Regards Simon VK3ELH? |
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Re: Arduino Projects...
Jack Purdum
Thanks, Craig. I wish there were some magic wand I could wave to make all hams experience the enjoyment that comes from building and operating your own "stuff", whatever that might be. Same for CW. I remember when I upgraded from Novice to General and saying: "I am NEVER going back to CW again...EVER!!" And, I really didn't for a long time, but here I am really enjoying CW and working to get my speed back up. My goal: 30wpm. Alas, today marks 75 laps around the sun, so I need to knuckle down and "git 'er done".
Keep building and enjoy the ride! Jack, W8TEE
On Thursday, May 3, 2018, 6:18:05 PM EDT, Craig Thibodeaux <km4yec@...> wrote:
Dr. Jack,? As he well knows¡.my purchase of ¡®that¡¯ book¡. the spark that helped start a monthly meeting presentation at the Ham club that I attended at that time¡.I wanted to do some building, some making, some home brewing and was having a little trouble getting others to play with¡..so I put together a presentation that started with Dr. Jack¡¯s book¡.followed that up with the club having a builders group that started with Dr. Jack¡¯s book¡.. a few months later¡.that led to Dr. Jack speaking at a Builders Fest at the Ham clubs hamfest that I am no longer associated with¡..said Builders Fest was opened up with my explanation of how everything in the room started with Dr. Jack¡¯s book, and holding up of said book¡.and few going out as door prizes¡. read more at my amazon review, and if you bought one make sure to leave your review¡.. in the last few months, my builders group presentation has gone on the road to knoxville, and to kingsport, tn¡¡the opening of both presentations¡..holding up Dr. Jack¡¯s book¡¡ ask me how I really feel? Craig KM4YEC
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Re: BITX20 at Dayton Hamvention?
Jack Purdum
Hi Rich:
Yep, books is correct. In fact, 18 books altogether and working on #19. You're kinda an old-timer like me. I got my first license in 1954 and upgraded to General a year later. Been licensed ever since and having a blast with it ever since I retired. 73, Jack, W8TEE
On Thursday, May 3, 2018, 7:25:54 PM EDT, Richard Spohn <wb2gxm@...> wrote:
Oh, don't even go there. I have your book also, by the way.? Isn't that "books?"? I believe I have two of your books.? Don't shoot me if I am thinking of somebody else...? ...I too am a "paper" person!? First licensed in 1970.? Still desire to send and receive paper QSL cards.? Write my own short stories on all kinds of paper, napkins, flyers, envelopes.? When in doubt, print it.? The pen is mightier than the tablet...but the pencil is The Undisputed King.? It not only writes, it easily shades your drawings.? OH NO STOP MY RAMBLING - Rich WB2GXM On 5/3/18, Jack Purdum via Groups.Io <jjpurdum=[email protected]> wrote: > I'm reminded of the question: "Who loves you more, your wife or your dog?" > Easily answered. Lock them both in the trunk of your car, come back two > hours later, and see which one is glad to see you. > > Jack, W8TEE > > >? ? On Thursday, May 3, 2018, 5:37:10 AM EDT, David Wilcox via Groups.Io > <Djwilcox01=[email protected]> wrote: > >? Re your dog: ?I listened to NPR yesterday on the subject of loneliness. ?It > affects a persons health the same as smoking 15 cigarettes a day and is now > considered a major health risk. ?Having a pet greatly reduces the risk of > early death. ?Love your dog. ?I am a retired family doctor and I saw the > effects of loneliness on my patients, not just the elderly ones. Our young > people are the most connected of any generation but are the loneliest they > have ever been. > My wife has been away for 3 weeks helping my kids in a move. ?Our 15 y/o > diabetic cat has been a blessing in addition to a few ham radio friends and > my church. > Again, love your dog. > Dave K8WPE > On May 3, 2018, at 4:25 AM, William R Maxwell <wrmaxwell@...> > wrote: > > > > > Meawhile, love your dog. You have one of life's real treasures in a dog and > he or she will probably assist in your maintaining health. > > >? On 3/05/2018 12:31 PM, Terry Morris wrote: > > > Having a dog really hampers my freedom. I can't afford a kennel. Spending > power from pension seems to be getting smaller each year. I have probably > exceeded the norm for retirement, 25 years. I spend my seed money for Dayton > last month on a really great deal for a tower. I paid less than 1/3 what I > paid for same tower 24 years ago. I really wanted to attend Thursday, first > day of FDIM and maybe half a day Friday. I could've stayed at my Sister's > house in Springfield. Would? also like to be at Dayton on Sunday. My club, > PCARS aka Portage County Amateur Radio Service, is being presented an award > from DARA for the Best Club of 2018 and our club group picture. The DOG > hampers most of my plans. I would go to Dayton (Xenia) just to talk with > people face-to-face and have a stab at the main prize. I have never won > anything at Dayton. Maybe I will be healthy enough to make the trip in 2019. > > >? Terry - KB8AMZ Brimfield Twp, OH? USA Linux User# 412308, Ubuntu User# > 34905 OSs: LM18.2 64bit, Ubuntu 16.04, tahrPup64 64bit, Raspian Orgs: > PCL70-FOP, NTHS, ALUG, ARRL, PCARS#78, NAQCC#6668,? NO-QRP-C, QRP-ARCI#8855, > SKCC#14195, USN 1965-1969 AG3 >? I chair the PCARS CW/QRP SIG and Linux for Hams SIG, second and fifth > Tuesday > >? my computer, my opinion >? On Mon, Apr 30, 2018 at 11:46 PM, Hans Summers <hans.summers@...> > wrote: > >? Hi Jack, all >? > Hans and Ashhar will both be at the FDIM conference just? > before the > Hamvention starts, in Fairborn, OH. I'm fairly certain? > there will also be > a fair number of ?BITX users at that? > conference, too. >? QRP Labs has a table at vendor evening at FDIM (Thursday 17-May-2018) and > also a booth at the Dayton hamvention, #6414. I hope to have a good > selection of QRP Labs kits on show and for sale. >? 73 Hans G0UPL > > > > |
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Re: ND6T AGC implementation for uBIT-X
Let your clients, namely us, pay the full cost of shipping. Just like
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Show quoted text
the good old days. - Rich WB2GXM On 5/3/18, Kees T <windy10605@...> wrote:
A list of potential orders as of 5/3/2018 at 7:30 PM local time has been |
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Re: 45Mhz crystal filter specification
Something is mighty fishy.
Or the input frequency for the VFO as set should 3.915mhz. 48.915mhz -45.000= 3.915mhz Try raising the signal generator from 3.8mumble to 3.915 and see if things get better. The LO for converting from 45 to ~12mhz if should be either 33. or 57. withoutly a few khz from those.? IF the SA is right that seems off too. Allison |
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Re: ND6T AGC implementation for uBIT-X
Kees This is fantastic. Thank you for your work. For Canadians who order, marked package as "Amateur Radio Kit" or something like that. No custom fees will be charged and helps expedite the order through customs quicker. 73 Ken VA3ABN On Thu, May 3, 2018 at 9:08 PM, Kees T <windy10605@...> wrote: A list of potential orders as of 5/3/2018 at 7:30 PM local time has been uploaded to the FILES section under my call? K5BCQ. The total is surprisingly high (250+) for just starting out, but very manageable. If you want to make corrections or additions, email me directly at? K5BCQ(at)ARRL.net? (to keep from overloading this "topic") and I'll update the spreadsheet. |
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Re: 45Mhz crystal filter specification
The 45mhz filter is rather narrow If memory serves its a 15khz (wide) unit
which is typical for common use (FM first IF work).? ?So for low attenuation you need to be between 44.9925 to about 45.0075mhz. The one marker is 44.9625mhz? which is 37k Khz off of center, I'd expect a fair amount of attenuation there compared to inband. Could your LO cal be off or the RIT/PBT be active? Allison |
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Re: ND6T AGC implementation for uBIT-X
A list of potential orders as of 5/3/2018 at 7:30 PM local time has been uploaded to the FILES section under my call? K5BCQ. The total is surprisingly high (250+) for just starting out, but very manageable. If you want to make corrections or additions, email me directly at? K5BCQ(at)ARRL.net? (to keep from overloading this "topic") and I'll update the spreadsheet.
Later on, I will add a "How to Order" document to the FILES section and maybe a "Helpful Hints" document in addition to what is on Don's, ND6T website.? I'm still assuming people will want to order by mail and via PayPal. Any suggestions to hold the costs down, especially for overseas shipping will be appreciated.?? 73 Kees K5BCQ |
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Re: Enclosure
That's interesting I ordered two cases on 4/14 and still haven't got mine! Roy WA0YMH On Thu, May 3, 2018, 7:34 PM Ron <rwatson77@...> wrote: I order mine on 4/15 and received 10 days later via DHL. I received shipping notice from PayPal and was able to track all the way. |
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45Mhz crystal filter specification
All,
My ubitx has quit working in receive and SSB transmit. CW transmit still works. Attached are spectrum analyzer traces at C216 and C210, i.e. the input and the output of the 45Mhz crystal filter. Does anyone else have a spectrum analyzer they can use to verify that this is what I should be seeing? It's hard to believe that the 45Mhz crystal filter has a 30db insertion loss. I have removed nd6t's agc circuit and the thump filter circuit. The ubitx is basically in standard configuration. The CW sidetone comes through the audio section just fine, just no received audio. My test signal is at 3900khz. The 48.915Mhz signal (marker 4) is about where it should be to put the 3.9Mhz signal at 45Mhz. I am a little surprised at the vfo signal being so strong, I would have thought the first mixer would have suppressed the vfo signal more than this. Any help or comments would be appreciated. tim ab0wr |
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Re: BITX20 at Dayton Hamvention?
Oh, don't even go there.
toggle quoted message
Show quoted text
I have your book also, by the way. Isn't that "books?" I believe I have two of your books. Don't shoot me if I am thinking of somebody else... ...I too am a "paper" person! First licensed in 1970. Still desire to send and receive paper QSL cards. Write my own short stories on all kinds of paper, napkins, flyers, envelopes. When in doubt, print it. The pen is mightier than the tablet...but the pencil is The Undisputed King. It not only writes, it easily shades your drawings. OH NO STOP MY RAMBLING - Rich WB2GXM On 5/3/18, Jack Purdum via Groups.Io <jjpurdum@...> wrote:
I'm reminded of the question: "Who loves you more, your wife or your dog?" |
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