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Re: After Building a Two Tinned Tunas EZ Build, what next?
Daniel KK4MRN
Hello,
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I recently built the Sea Sprite+ for the Buildathon on March 25, 2023.? It works.? It was fun!? And I plan on making mods to improve the radio.?? What QRPme kit would any of you reading this group recommend next? Sudden Receiver ? Rock Mite ][ transceiver ? Super Tin Tuna 5W transmitter? Lil Squall Transceiver ? regular Sea Sprite transceiver? Something else? 73 Daniel KK4MRN On Mon, Feb 27, 2023 at 11:25 AM, Daniel KK4MRN wrote: Hello fans of the can, |
Photo of my Sea Sprite+ in my ham shack
Daniel KK4MRN
Hello all,
I have attached a photo of my Sea Sprite+.? I resized it to make the size smaller.
Thanks to John AC9UV, I learned how to tap off?point "H" and ground to use a 50ohm power meter and 50ohm dummy load to measure QRP power levels or use a different antenna. ?
Anybody else care to share a photo of their Sea Sprite+ in their ham shack or wherever you made contacts?
Please? ?
Once I can make contacts in Morse Code using another rig, I will build and put the end fed half wave antenna in a tree and try to make contacts. I am still learning.? However, I will use my Sea Sprite+ to make contacts on my back porch.? Or, I could just the end fed random wire antenna and 9:1 unun and counterpoise that I already am using, but I need to finish my home brew z-match.
?
73 Daniel KK4MRN |
Re: 401 Size Can?
Daniel,
I think the brass sets have been superseeded by another material because the brass sets were hard to source. I have two of those sets and enjoy their utility.
As to the antenna, As I recall from a previous QRPMe build, you cut 17ft from the 80 ft wire leaving 63 feet of wire for the antenna. Or as I calculate now:
Result:
Frequency:
7.11 MHz
Wavelength:
69.17 ft
So maybe cut off 11ft from the 80 ft.?
That should tune to the frequency of the provided crystal.
I cut off 17 ft. I'll have to check SWR with my antenna analyzer. You can always use a tuner, or add/subtract wire at the end to get a good swr.?
I had a problem with my switching primary and secondary on the output transformer, and have corrected that. It seems to be operating fine but the output is below what I think it should be. That may require the proper antenna with the proper impedance to show greater output. Tests to do.
As to the code. I don't know if I will be confident and ready by the weekend but I may leap in with both feet. The protocal for that kind of contact is limited so that means it may be possible.?
The output signal looks clean, no observable harmonics, kudos to Rex and his team for a good design.
? Maybe I'll see you on the air, if not this weekend, soon.
? ?---John AC9UV
? ?73
|
Re: Are your Morse Code skills ready for the Buildathon on March 25th?
Daniel KK4MRN
Hello John and Russel,
I hear ya.? I doubt I will be able to make a contact.? I am getting there but I will not be there in time.? I will try to see to make contacts Friday night or Saturday morning before the Buildathon just to see if I can make some contacts using a different radio and antenna.? If I can, that will give me the confidence to try to make a contact with the Sea Sprite+ on Saturday.? I am learning code at the Long Island CW Club speed of 12 WPM.? ?But, I am optimistic in that I will keep practicing to get on the air even once the weekend is over.? ?Really, I think I will be happy if I can at least hear others making contacts using their Sea Sprites on the weekend.? Nothing like operating your own radio you built... And Chuck says the band conditions may not be great this weekend.? I live on a hill so reception is not that great.? I already use an end fed random wire antenna, 9:1 unun, and counterpoise to get on the air.? So, there are losses.? Not great.? But hey, I can make contacts on 160m - 10m. So, I ask others to keep trying to make contacts the whole week.? Weekend to weekend. I will probably be operating on my back porch.? The funny thing is my QSL card has a photo of my back porch with my radio I was operating. 73 Daniel KK4MRN |
Re: 401 Size Can?
Daniel KK4MRN
Hello,
In my pantry, I found a Great Value (Walmart generic brand) Premium Chunk Chicken Breast in water fully cooked. NET WT 12.5 OZ (354g). The Sea Sprite+ pcb fits in it nicely.? However, I have not pulled the top yet.? It expired in 2021 so I may have to toss what is in it. I got the envelope yesterday with the extra parts.? And I have the kit already.? So, I will try to build the key and wind the coils tonight.? And order things.? I kept Styrofoam from packages I got.? I actually was intending to use them for crystal matching for something else I am building.? But, ordering my sea sprite + kit parts is more important right now. What about the end fed half wave antenna and counterpoise?? What needs to be done to build it? . However, I actually prefer those brass cube pcb holders from QRPme for soldering.? ?I think I want to order more sets of them.? I only have one set of 4.? But I build multiple stuff at the same time. 73 Daniel KK4MRN |
My Sea Sprite+ Kit for the Buildathon arrived in the mail
Daniel KK4MRN
Hello,
My Sea Sprite+ kit arrived in the mail to day.? I was waiting at the door today when the mail man arrived... See the attached photos.? Ooooh!? ?Awwww!? ?Cooool... The hardest part about this kit - trying to contain myself and wait for the Buildathon to start on Saturday, March 25th... But, I can go ahead and build the end fed half-wave antenna, the straight key, and wind the toroid coils.? ?How early can I start on these 3 things?? ? I did create an un-boxing video but I made a mistake.? I took the video of my package which had all my info.? So, I tried to blur it.? But it takes YouTube Studio hours to blur parts.? I did the blur twice.? And still found a few more frames that had the info I wanted blurred.? So, I gave up.? However, If others still want to see it, I can work on it a little more and then make the video public.? ?Or redo the video but the package has already been cut open.? ? Now, my bag of parts has not been opened yet, that won't happen until I start building something...? Probably best if I get a plastic container with a good lid and put my parts there.? Less likely to lose parts that way. 73 Daniel KK4MRN |
Re: Are your Morse Code skills ready for the Buildathon on March 25th?
Daniel,
We will see, my code comprehension is not strong yet. That Sunday is also XYL's birthday so may not have much time to get on the air. But will try. I have been excersizing the CWOps online code excersize program.
? ?Hope to hear you online,
---John AC9UV?
|
Re: Are your Morse Code skills ready for the Buildathon on March 25th?
Daniel, The single most important Morse Code skill is tenacity.? Here's what I'd tell anyone who is learning (or like me that has done it for years, sometimes with gaps in operating activity). Just do it and don't worry about it. That's 99.99% of it. If you mess up, you still made a contact. You got some practice and maybe a QSL card in the mail. If you can send nothing more than 599 TU and your callsign, you can work DX with the best of them. I promise. If you've made CW contacts before, ignore my comments or read them and laugh at my stupidity. If not, it might help. I've had plenty of times where I've gotten behind the 8-ball, so to speak, and just got through the QSO as quickly as possible and moved on. That's normal. Go slow. Follow the normal format and don't vary too much from it at first. Chatting can come later. You'll also find that with most ops that have been doing it a while, there isn't a hard and fast, rigid procedure.? I mean, you do hear <AR> <SK>, etc., but everything else more like phone.? It's relatively rare to hear stuff like : CQ CQ CQ DE KK4MRN KK4MRN KK4MRN K? <--- 3x3 is good. I usually do 3 x 2 or 3x3. KK4MRN DE N0QLT N0QLT N0QLT K? ?<----------------? You're more likely to hear someone just send their call once or twice.?? Then you will probably hear N0QLT K? ?instead of N0QLT N0QLT N0QLT DE KK4MRN? KN Some will argue that short form is sloppy operating. I think both are fine. I'm not a stickler for 13th decimal place precision and it's maybe a bit more natural (conversational) to do contrary to the established QSO "rules."? You do need to know how to do it though. It just isn't as common as it was when I was in the Novice bands 30+ years ago. It's something to be aware of. You'll eventually find that CW is a lot more like phone in casual operation than you'd have guessed. Here's what IS important, though. The old Novice-Contact format is really useful and makes a nice stress-free contact because you know what's included. SKCC does a version of this. I imaging LI CW does, too: I DO NOT do the whole send the other station's callsign DE me thing with every transmission. Not necessary. You know who you are talking to. CQ CQ CQ DE N0QLT N0QLT N0QLT K KK4MRN. KK4MRN TU.? UR 599 599 IN MO MO. OP RUSTY RUSTY. SKCC 1074 1074. TNX QSO ES 73. K TU, RUSTY. UR 339 339 IN KY (I forgot your state!) KY.? OP Daniel SKCC 123456 123456 TNX ES 73. DE KK4MRN <SK> DIT DIT 73, DANIEL. DE N0QLT <SK> DIT DIT It's still pretty much the old Novice format, just a little shorter and less formal than: CQ CQ CQ DE N0QLT N0QLT N0QLT K N0QLT N0QLT N0QLT DE KK4MRN KK4MRN KK4MRN K KK4MRN KK4 MRN DE N0QLT N0QLT K N0QLT DE KK4MRN?? THANKS FER THE CALL. UR RST IS 599 599 NAME IS RUSTY RUSTY. QTH IS JOPLIN, MO JOPLIN, MO. HW CPY?? KK4MRN DE N0QLT KN ...? and so on. There's nothing wrong with either. The information is the same, but the SKCC format is a bit shorter.?? The big thing is that either format gives you a framework to keep the pressure off.? You know what is expected (although sometimes the order will be rearranged) and you can be looking for it. It's hard for new CW ops to go about getting all the i's dotted and t's crossed and have to copy long chats right off the bat.? Stick to the basics for now: RST, QTH, Name, 73.? It's really that simple and you'll be surprised at how fast you get better. And even if you don't (you will), you still are reliably making contacts. It's supposed to be about fun, right?? ?I'm an average (at best) CW op. I'll probably never make CW Ops, FOC, or get an award for saving the Titanic II from sinking. But CW IS my favorite mode. I hated it when I was learning it, but it grew on me. It's the majority of all the operating I do these days. And about 50% or more is QRP @ 2W or below with homebrew or kit radios. The other 50% or so is chasing DX.?What you get out of the hobby is what you want to get out of it.? And that might change over time. One other thing... A QRP secret: At least at first, answer the loud stations. If you can hear them well, you've likely got a decent shot in the clear. And don't mention QRP. Uttering those 3 letters on the air will often drop your signal 10dB or more.? UR 579... What? you're running 1W? Oh, your signal is now 119 w/ QSB... ;) Hope that helps some! -HRS ? H. Russell Smith, N0QLT???
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On Wednesday, March 15, 2023 at 08:14:32 AM CDT, Daniel KK4MRN via groups.io <sqldan2000@...> wrote:
Hello?John Putnum, AC9UV and others, Are your Morse Code skills ready for the Buildathon on March 25th? I am still trying.? Numbers are the hard thing for me.? I am learning at 12 WPM like Long Island CW Club is doing.? I got less than 2 weeks! So, if you hear an idiot on 40m this weekend sending bad code, it could be me...? ?LOL? ?Just reply and say hello. Long Island CW Club has started a Sked page and a Code Buddy program.? I think they have a chat thing now too and some Discord thing too.? A good way for cw ops to meet up and make contacts to help improve their code skills.? ? And of course, SKCC Group has their Sked page.? SKCC Group membership is free. Nothing like being able to operate and make contacts on your own radio you built with your own hands... 73 Daniel KK4MRN |
Are your Morse Code skills ready for the Buildathon on March 25th?
Daniel KK4MRN
Hello?John Putnum, AC9UV and others,
Are your Morse Code skills ready for the Buildathon on March 25th? I am still trying.? Numbers are the hard thing for me.? I am learning at 12 WPM like Long Island CW Club is doing.? I got less than 2 weeks! So, if you hear an idiot on 40m this weekend sending bad code, it could be me...? ?LOL? ?Just reply and say hello. Long Island CW Club has started a Sked page and a Code Buddy program.? I think they have a chat thing now too and some Discord thing too.? A good way for cw ops to meet up and make contacts to help improve their code skills.? ? And of course, SKCC Group has their Sked page.? SKCC Group membership is free. Nothing like being able to operate and make contacts on your own radio you built with your own hands... 73 Daniel KK4MRN |
Re: 401 Size Can?
BBQ sauce is standing by, LOL. Thanks, looking forward to checking the mail.
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Davey - KU8L
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Re: 401 Size Can?
Group,
Who cares about stares, just bring a Tuna kit with you to the store. Measurement solved
? ?---John AC9UV
|
Tuna Power
1) The LIFEPO4 has a BMS battery management system that will cut off the charge once it has determined it is FULL or ~14.6 volts. 2) The charge voltage of the UC3906N as hardware programmed is actually only sufficient to change the LIFEPO4 battery to approximately 66% at 13.8 volts. So overcharging isn't actually likely. The charging input voltage is asking for an 18-20 volt wall cube which is the same as a solar panel with peak power at 18 volts and an open circuit voltage of ~20 volts. I have a 20-watt solar panel that outputs a 1-amp peak in the ideal sun with afternoon temps in the "cool" range. This seems ideal. Any more and the 1N4004 Rectifier diode would need to be upgraded. A 1.5 - 2-amp suggestion? At one amp that is a good idea anyway just for the margin of cooling safety. So for a long weekend of camping and Tuna operating, the solar panel could extend the operating time of the 6 AH battery and a conventional LIFEPO4 changer could be used on the disconnected battery after the fun is packed up for the weekend. It seems that the T.P.S. hasn't been passed over in technology quite yet! Stay tuned for a video on it, of course! Davey - KU9L |
Re: QRPme RF Monitor
That's cool. Great job! I need to get one of those. -HRS H. Russell Smith, N0QLT???
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On Wednesday, March 8, 2023 at 11:41:24 AM CST, David Knapp via groups.io <renewables@...> wrote:
Yeah, I have the world's worst video editing software, but at least I have fun. Virtually every cool piece of software has not discovered the Chromebook platform yet. However, even the HAMRS ham radio logging software promises Google is working on making Chromebook software writer compatible, someday. Nonetheless, I's does the best as I cans, LOL. Online video creation software was bypassed by most SW designers, LOL. Excuse the AI voice, a golf club accident from a neighbor boy with a mean backswing sent me speaking in a stuttering tone for the past 57 years, therefore I am a CW man, LOL. https://youtu.be/cV8xrOinMuw Davey - KU9L |
QRPme RF Monitor
Yeah, I have the world's worst video editing software, but at least I have fun. Virtually every cool piece of software has not discovered the Chromebook platform yet. However, even the HAMRS ham radio logging software promises Google is working on making Chromebook software writer compatible, someday. Nonetheless, I's does the best as I cans, LOL. Online video creation software was bypassed by most SW designers, LOL. Excuse the AI voice, a golf club accident from a neighbor boy with a mean backswing sent me speaking in a stuttering tone for the past 57 years, therefore I am a CW man, LOL. https://youtu.be/cV8xrOinMuw Davey - KU9L |
Re: 401 Size Can?
Love the monkeys! We had a family friend who had a Capuchin monkey named Tessa. She was ornery! I met a Capuchin monk (OK, friar), when I was in Detroit a few years ago, too. He was a really nice guy, but I don't think he was a Ham. I have no idea if Tessa or Br. David like Cappuccino. I don't.? I do like a good cup of regular coffee with nothing in it, though. Isn't it great how thoughts can chain together??? I think your can is very close to 401 (4" 1/6" OD), maybe within wiggly tape measure end slop. At least we hope so. The upside is the near-certain future of chicken salad sandwiches. Maybe a win/win! -HRS H. Russell Smith, N0QLT???
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On Tuesday, March 7, 2023 at 05:22:42 PM CST, David Knapp via groups.io <renewables@...> wrote:
Here is the 12.5 oz can of chicken from WM, but inconclusive if it's a 307 or 401 size. Monkeys are now on my back to find out, LOL. -Davey - KU9L
On Tuesday, March 7, 2023 at 05:46:22 PM EST, Russell Smith via groups.io <n0qlt@...> wrote:
Google says a 12.5oz can of chicken should be able to be found in a 401-size can.? I also seem to remember I bought some Asian food (I don't remember exactly what) and some bbq or chipped/chopped beef stuff in the same squatty, much shorter-than-a-can-of-corn-sized can.? ? -HRS H. Russell Smith, N0QLT???
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On Tuesday, March 7, 2023 at 04:37:23 PM CST, David Knapp via groups.io <renewables@...> wrote:
Has anyone found success in finding a 401-size can? I have measured every can at our local WM and aside from the occasional 6" huge size, the largest I "can" find is the 307 size as shown. Our WM is next door to our snowbird campground and walking distance, but before I take the two hour drive to Costco I thought I would seek an extra breadcrumb locally. My next search will be Public 3 miles away. Cheers es 72, Davey - KU9L |
Re: 401 Size Can?
Here is the 12.5 oz can of chicken from WM, but inconclusive if it's a 307 or 401 size. Monkeys are now on my back to find out, LOL. -Davey - KU9L
On Tuesday, March 7, 2023 at 05:46:22 PM EST, Russell Smith via groups.io <n0qlt@...> wrote:
Google says a 12.5oz can of chicken should be able to be found in a 401-size can.? I also seem to remember I bought some Asian food (I don't remember exactly what) and some bbq or chipped/chopped beef stuff in the same squatty, much shorter-than-a-can-of-corn-sized can.? ? -HRS H. Russell Smith, N0QLT???
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On Tuesday, March 7, 2023 at 04:37:23 PM CST, David Knapp via groups.io <renewables@...> wrote:
Has anyone found success in finding a 401-size can? I have measured every can at our local WM and aside from the occasional 6" huge size, the largest I "can" find is the 307 size as shown. Our WM is next door to our snowbird campground and walking distance, but before I take the two hour drive to Costco I thought I would seek an extra breadcrumb locally. My next search will be Public 3 miles away. Cheers es 72, Davey - KU9L |
Re: 401 Size Can?
Thanks, Aldi is the same distance as Publix for me. A sure way to get stares is to go into the store with a tape measure, LOL. -Davey - KU9L
On Tuesday, March 7, 2023 at 05:50:42 PM EST, Russell Smith via groups.io <n0qlt@...> wrote:
As an addendum, I've found a number of things at stores like Dollar General, Family Dollar, Big Lots, and the dollar stores in some choice (and more uncommon) cans/tins. Those are the very next places I hit if WalMart/Target/Walgreens/local grocery store doesn't have anything. We don't have Food Lion/Publix/Piggly Wiggly, etc., here. We do have Aldi's.? I almost forgot about them. Another good source. -HRS H. Russell Smith, N0QLT???
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On Tuesday, March 7, 2023 at 04:46:21 PM CST, Russell Smith via groups.io <n0qlt@...> wrote:
Google says a 12.5oz can of chicken should be able to be found in a 401-size can.? I also seem to remember I bought some Asian food (I don't remember exactly what) and some bbq or chipped/chopped beef stuff in the same squatty, much shorter-than-a-can-of-corn-sized can.? ? -HRS H. Russell Smith, N0QLT???
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On Tuesday, March 7, 2023 at 04:37:23 PM CST, David Knapp via groups.io <renewables@...> wrote:
Has anyone found success in finding a 401-size can? I have measured every can at our local WM and aside from the occasional 6" huge size, the largest I "can" find is the 307 size as shown. Our WM is next door to our snowbird campground and walking distance, but before I take the two hour drive to Costco I thought I would seek an extra breadcrumb locally. My next search will be Public 3 miles away. Cheers es 72,
Davey - KU9L |
Re: 401 Size Can?
As an addendum, I've found a number of things at stores like Dollar General, Family Dollar, Big Lots, and the dollar stores in some choice (and more uncommon) cans/tins. Those are the very next places I hit if WalMart/Target/Walgreens/local grocery store doesn't have anything. We don't have Food Lion/Publix/Piggly Wiggly, etc., here. We do have Aldi's.? I almost forgot about them. Another good source. -HRS H. Russell Smith, N0QLT???
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On Tuesday, March 7, 2023 at 04:46:21 PM CST, Russell Smith via groups.io <n0qlt@...> wrote:
Google says a 12.5oz can of chicken should be able to be found in a 401-size can.? I also seem to remember I bought some Asian food (I don't remember exactly what) and some bbq or chipped/chopped beef stuff in the same squatty, much shorter-than-a-can-of-corn-sized can.? ? -HRS H. Russell Smith, N0QLT???
?????????????????????????????
On Tuesday, March 7, 2023 at 04:37:23 PM CST, David Knapp via groups.io <renewables@...> wrote:
Has anyone found success in finding a 401-size can? I have measured every can at our local WM and aside from the occasional 6" huge size, the largest I "can" find is the 307 size as shown. Our WM is next door to our snowbird campground and walking distance, but before I take the two hour drive to Costco I thought I would seek an extra breadcrumb locally. My next search will be Public 3 miles away. Cheers es 72,
Davey - KU9L |
Re: 401 Size Can?
Google says a 12.5oz can of chicken should be able to be found in a 401-size can.? I also seem to remember I bought some Asian food (I don't remember exactly what) and some bbq or chipped/chopped beef stuff in the same squatty, much shorter-than-a-can-of-corn-sized can.? ? -HRS H. Russell Smith, N0QLT???
?????????????????????????????
On Tuesday, March 7, 2023 at 04:37:23 PM CST, David Knapp via groups.io <renewables@...> wrote:
Has anyone found success in finding a 401-size can? I have measured every can at our local WM and aside from the occasional 6" huge size, the largest I "can" find is the 307 size as shown. Our WM is next door to our snowbird campground and walking distance, but before I take the two hour drive to Costco I thought I would seek an extra breadcrumb locally. My next search will be Public 3 miles away. Cheers es 72,
Davey - KU9L |
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