Re: Kits and Parts 5 Watter build
Thanks! I've submitted a construction article on the build to CQ magazine, but no words yet.
Jack, W8TEE
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On Friday, August 16, 2019, 9:54:59 AM EDT, WA0ITP <wa0itp@...> wrote: Very nice build Jack, thanks for sharing the jpegs. 72 WA?ITP I love this radio stuff. www.wa0itp.com www.4sqrp.com On 8/16/2019 8:37 AM, Jack via Groups.Io wrote: All:
I just finished the Kits and Parts 5 Watter for 40M. As you can see, it's not a beginner's board:
but Diz provides details that, in conjunction with Chuck Adams' excellent assembly manual (downloadable from Diz's site), means a beginner could probably do it with an Elmer looking over their shoulder. There are 4SMD's, 12 toroids/transformers, and just under a bazillion bypass caps, but the result is a very quiet receiver. The first night I copied stations all over the US plus France, Mexico, and a number of Caribbean stations. I have not made a lot of contacts yet, as I wanted to get it into its case first.
Because I plan to take this into the field, I mounted it in a Harbor Freight Apache case, which is watertight. All of the external connections come out the top panel, so there are no holes in the case. Indeed, I'm pretty sure I could float the case in a lake, take it out, and drive my car over it:
Because the 5 Watter sits on a platform in the case, the 20000mAh battery slides under the rig with room left over for paddles and a small headset. I may even get the antenna in their, too. Al (AC8GY) designed the platform:
The block provides a friction point for the vent knob (seen on the front of the picture above) to be tightened against it and hold the platform in place. Thanks, Al!
Jack, W8TEE
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Re: Kits and Parts 5 Watter build
Very nice build Jack, thanks for sharing the jpegs.
72 WA?ITP
I love this radio stuff.
www.wa0itp.com
www.4sqrp.com
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On 8/16/2019 8:37 AM, Jack via Groups.Io wrote: All:
I just finished the Kits and Parts 5 Watter for 40M. As you can see, it's not a beginner's board:
but Diz provides details that, in conjunction with Chuck Adams' excellent assembly manual (downloadable from Diz's site), means a beginner could probably do it with an Elmer looking over their shoulder. There are 4SMD's, 12 toroids/transformers, and just under a bazillion bypass caps, but the result is a very quiet receiver. The first night I copied stations all over the US plus France, Mexico, and a number of Caribbean stations. I have not made a lot of contacts yet, as I wanted to get it into its case first.
Because I plan to take this into the field, I mounted it in a Harbor Freight Apache case, which is watertight. All of the external connections come out the top panel, so there are no holes in the case. Indeed, I'm pretty sure I could float the case in a lake, take it out, and drive my car over it:
Because the 5 Watter sits on a platform in the case, the 20000mAh battery slides under the rig with room left over for paddles and a small headset. I may even get the antenna in their, too. Al (AC8GY) designed the platform:
The block provides a friction point for the vent knob (seen on the front of the picture above) to be tightened against it and hold the platform in place. Thanks, Al!
Jack, W8TEE
|
Kits and Parts 5 Watter build
All:
I just finished the Kits and Parts 5 Watter for 40M. As you can see, it's not a beginner's board:
but Diz provides details that, in conjunction with Chuck Adams' excellent assembly manual (downloadable from Diz's site), means a beginner could probably do it with an Elmer looking over their shoulder. There are 4SMD's, 12 toroids/transformers, and just under a bazillion bypass caps, but the result is a very quiet receiver. The first night I copied stations all over the US plus France, Mexico, and a number of Caribbean stations. I have not made a lot of contacts yet, as I wanted to get it into its case first.
Because I plan to take this into the field, I mounted it in a Harbor Freight Apache case, which is watertight. All of the external connections come out the top panel, so there are no holes in the case. Indeed, I'm pretty sure I could float the case in a lake, take it out, and drive my car over it:
Because the 5 Watter sits on a platform in the case, the 20000mAh battery slides under the rig with room left over for paddles and a small headset. I may even get the antenna in their, too. Al (AC8GY) designed the platform:
The block provides a friction point for the vent knob (seen on the front of the picture above) to be tightened against it and hold the platform in place. Thanks, Al!
Jack, W8TEE
|
My memory of the early days of SSB were that it really started with phasing
rigs. 9MHz. Everything below 9MHz was LSB and everything above 9MHz was USB.
We can do that again with the QRP Labs Rx.
I just found this:
This is an Analog Devices Evaluation Board for the AD9854. The AD9854 is a
combined DDS and QSD.
It looks like something to investigate. I found it from a Flex Radio paper.
Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
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----- Original Message ----- From: "ajparent1/kb1gmx" <kb1gmx@...> To: < [email protected]> Sent: Thursday, August 15, 2019 2:52 PM Subject: Re: [qrp-tech] Just Thinking?? The filter can be easier but the IQ/phasing a large part of the work is at audio. Doing it with high speed switch ICs can simplify it or even DBMs for the RF work. A pair of DBMs and a twisted wire hybrid is a very low parts count path. I've done it multiple ways and one item to note most IQ phasing rigs using at least a 2nd order allpass (audio phase shifter) will sound better than a filter rig. That allpass takes a few dual Opamps to make it go. RF filters especially some of the lower frequency ones have significant delays that are not uniform in the pass band. That adds audible distortion. I've done a bit of work with them and have what I call a hybrid radio using superhet front end at 6M and phasing hardware (miniR2/T2) as the IF. The trick is that it was for 6M and phasing hardware works as well for an IF at 36mhz as it would at 1.8mhz and that made the VFO simple (14mhz). That said the QRPlabs phasing RX as an IF has two features, one being you can pick the frequency to suit yourself in a range from a few mhz up to 30-40mhz it performs just as well. Allison -- Please reply on the group, no private emails we as a group get to share info that way.
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Re: Low cost Visor Magnifier even lower cost
I find I can't wear those headbands, with or without my readers on, they make me feel nauseous.
Looks like it may be time to experiment with the USB microscope for smd work.
--
Terry VK5tm
www.vk5tm.com ( )
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Bob
I concur that its more fun to not use the sa612, except to note the k2 uses one in the product detector.
If you don't have a qcx they have a wonderful receiver. It uses a massive number of parts in the audio section, but it sounds wonderful.
Yes hard to choose your adventure sometimes. I even went off deep end to build a few regens just to experience them.
Curt
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The filter can be easier but the IQ/phasing a large part of the work is at audio.
Doing it with high speed switch ICs can simplify it or even DBMs for the RF work.
A pair of DBMs and a twisted wire hybrid is a very low parts count path.
I've done it multiple ways and one item to note most IQ phasing rigs using
at least a 2nd order allpass (audio phase shifter) will sound better than a
filter rig. That allpass takes a few dual Opamps to make it go. RF filters
especially some of the lower frequency ones have significant delays
that are not uniform in the pass band. That adds audible distortion.
I've done a bit of work with them and have what I call a hybrid radio using
superhet front end at 6M and phasing hardware (miniR2/T2) as the IF.
The trick is that it was for 6M and phasing hardware works as well for
an IF at 36mhz as it would at 1.8mhz and that made the VFO simple
(14mhz).
That said the QRPlabs phasing RX as an IF has two features, one being you
can pick the frequency to suit yourself in a range from a few mhz up to
30-40mhz it performs just as well.
Allison
--
Please reply on the group, no private emails we as a group get to share info that way.
|
Hi Bob,
I experimented using two 602s to make a Quadrature Demodulation receiver
IF. Used a 7MHz crystal because that's what I had in my bin of parts.
Lowered part count of phase audio shift by only accommodating narrow CW
passband. Though still has a significant part count. Not sure which is
easier, crystal filter or quad demod.
John KN5L
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On 8/15/19 12:15 AM, Bob Macklin wrote: I am looking at using the QRP Labs receiver module with the phase shift
network to replace the 4.915MHz IF in a design similar to the Burdick
designs. To eliminate the crystal matching.
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Re: Low cost Visor Magnifier even lower cost
Be vareful of dollar store readers. I bought a 4+ last year and they are ground to 4+ only in the center. A good pair (maybe $5 to $25) are ground all the way across so you can look out of them off center and still see the board with magnification. The center ground ones I bought for $1 I can only see magnified when I look straight through the center only.
David J. Wilcox K8WPE¡¯s iPad
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On Aug 14, 2019, at 12:04 PM, ajparent1/kb1gmx <kb1gmx@...> wrote:
I do like BillC...
I need readers for some things +1.5 both eyes and no other astigmatism.
However I can buy at the dollar store +1.5, +1.75, +2 all the way to +3.5
"readers" for doing close fine work. I Keep my nominal reader handy and
a second pair I just wear over them for doing SMT work down to 0603.
fast and easy solution and far less learning intensive than stereo
microscope.
--
Please reply on the group, no private emails we as a group get to share info that way.
|
BTW:
I am looking at using the QRP Labs receiver module with the phase shift
network to replace the 4.915MHz IF in a design similar to the Burdick
designs. To eliminate the crystal matching.
Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
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----- Original Message ----- From: "Curt via Groups.Io" <wb8yyy@...> To: < [email protected]> Sent: Wednesday, August 14, 2019 5:44 PM Subject: Re: [qrp-tech] Just Thinking?? Bob Cool stuff. I enjoy reading your posts. The k2 and k3 use passive mixers, hence the rf preamp. I use the preamp nearly 100 percent with my k2, as its light on front end gain even on 80m, and its a brawny preamp. Note the other rigs you mentioned use a sa612 that includes an rf amplifier. Try to find a local buddy with a deep junkbox. Reminds us we all need to network more. Don't be afraid to dialog direct with Hans on his list, he may help with what you consider rough edges on his goods. Curt
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Kurt,
My understanding is the 602/612 have limited dynamic range.
It was interesting to read the development of the Burdick designs.
I guess the K4 is completely different.
Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
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----- Original Message ----- From: "Curt via Groups.Io" <wb8yyy@...> To: < [email protected]> Sent: Wednesday, August 14, 2019 5:44 PM Subject: Re: [qrp-tech] Just Thinking?? Bob Cool stuff. I enjoy reading your posts. The k2 and k3 use passive mixers, hence the rf preamp. I use the preamp nearly 100 percent with my k2, as its light on front end gain even on 80m, and its a brawny preamp. Note the other rigs you mentioned use a sa612 that includes an rf amplifier. Try to find a local buddy with a deep junkbox. Reminds us we all need to network more. Don't be afraid to dialog direct with Hans on his list, he may help with what you consider rough edges on his goods. Curt
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Re: 4.915 Crystal Filters?
Bob
I have some measured 4915 khz xtals. Email me if you wish, see qrz.
Curt wb8yyy
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Bob
Cool stuff. I enjoy reading your posts.
The k2 and k3 use passive mixers, hence the rf preamp. I use the preamp nearly 100 percent with my k2, as its light on front end gain even on 80m, and its a brawny preamp. Note the other rigs you mentioned use a sa612 that includes an rf amplifier.
Try to find a local buddy with a deep junkbox. Reminds us we all need to network more. Don't be afraid to dialog direct with Hans on his list, he may help with what you consider rough edges on his goods.
Curt
|
Re: Aluminum Enclosures by K7QO
I had forgotten about BitChute...
Jack, W8TEE
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On Wednesday, August 14, 2019, 12:35:14 PM EDT, k6whp <k6whp@...> wrote:
While this thread seems to be fragmenting, I would like to add to the fork in the road regarding the maintaining Chuck's videos for fair use by interested hams.
Chuck, Are you aware of BitChute (bitchute.com)? It is a YouTube workalike and refuge for those disgusted with Google's political meddling. I will leave it at? that suffice to say that the more robust BitChute becomes..er.. the more robust BitChute becomes. (Sort of like a ramjet.) While you will not get a lot of views their either, at least your efforts will not disappear from the annals of QRPdom. Similarly, there is Patreon where we who like/need your work can pony up a periodic honorarium for the privilege. Probably not roll up a lot of dough but if it ameliorates the cost of a fw SBL1s here or a roll of solder there, what the heck? As a digression, I am reminded..
"My Uncle's a brave Missionary
He saves young ladies from sin
He'll save you a blond for five dollars
My God how the money rolls in.."
..et seq.
I have personally taken advantage of your kind release of your videos into the public domain, as it were, and downloaded a number of them. They are absolutely marvelous references when going back over the making of a 1Watter or NorCal 40A 25th anniversary project -- or even a tangential reference to electronics/RF principles, etc. This does not even address the fine examples of craftsmanship and building skills the "other" videos teach a ham about cabinets, muppet boards, etchings, etc.
To that end, have you considered DropBox (or similar) as an archive for your works? Their might be overhead? involved but it might be an effective way to allow folks to share your efforts. (But, then again, you already have your wonderful, minimalist website festooned with treasures and fine examples of your superior documentation efforts.)
Just suggestions to which I will add that we lot are a monumentally lazy bunch. We will go out, watch a video, not comment or up-vote and then wander on. (Well, it is a failing of mine.) We all know you as a good friend and true, a valuable contributor to our pathetic existences, and a producer of terrific resource material yet are not willing to expend a scintilla of effort to say "thanks".
So here it is: Thanks! And keep the videos up!
In kindest and sincerest appreciation!
--
William, K6WHP
"Cheer up, things could get worse..so I cheered up and, sure enough, things got worse!"
|
Found a source for the no longer available Harbor Freight punch. Northern Tool and Equipment has it both online and in store for $27.99.
The link -
link to picture
Michael
N9XYP
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Re: Aluminum Enclosures by K7QO
And don't forget they're...
Larry
KA5T
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On Aug 14, 2019, at 11:36 AM, k6whp <k6whp@...> wrote:
..I also pledge to learn the difference between "their" and "there".
--
William, K6WHP
"Cheer up, things could get worse..so I cheered up and, sure enough, things got worse!"
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Re: Aluminum Enclosures by K7QO
Greetings!
I am happy that the 2015 Aluminum Enclosure Construction video by K7QO
is back up!
Thank you Chuck, K7QO for finding that and restoring it for historical
purposes, whatever.
So much of our film history is disappearing at an ever accelerating rate.
Today I received a 64 pound box from Fed-X with a KAKA Industrial 12"
bench shear inside.
It looks exactly like the Enco 12" bench shear that Chuck demonstrates
in the video.
$134.99 with Free Shipping from:
It will probably take me a week to clear a space for it, and bolt it
down with shims, etc.
The instructions say to wipe the blades down with Mineral Spirits
before using it.
Evidently, they have some sort of protective coating on them?
Anyway, now I am one step closer to being able to follow the video demo.
Thanks again Chuck!
Regards,
Ken, KM4NFQ "Not Fully Qualified"
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Re: Aluminum Enclosures by K7QO
..I also pledge to learn the difference between "their" and "there".
--
William, K6WHP
"Cheer up, things could get worse..so I cheered up and, sure enough, things got worse!"
|
Re: Aluminum Enclosures by K7QO
While this thread seems to be fragmenting, I would like to add to the fork in the road regarding the maintaining Chuck's videos for fair use by interested hams.
Chuck, Are you aware of BitChute (bitchute.com)? It is a YouTube workalike and refuge for those disgusted with Google's political meddling. I will leave it at that suffice to say that the more robust BitChute becomes..er.. the more robust BitChute becomes. (Sort of like a ramjet.) While you will not get a lot of views their either, at least your efforts will not disappear from the annals of QRPdom. Similarly, there is Patreon where we who like/need your work can pony up a periodic honorarium for the privilege. Probably not roll up a lot of dough but if it ameliorates the cost of a fw SBL1s here or a roll of solder there, what the heck? As a digression, I am reminded..
"My Uncle's a brave Missionary
He saves young ladies from sin
He'll save you a blond for five dollars
My God how the money rolls in.."
..et seq.
I have personally taken advantage of your kind release of your videos into the public domain, as it were, and downloaded a number of them. They are absolutely marvelous references when going back over the making of a 1Watter or NorCal 40A 25th anniversary project -- or even a tangential reference to electronics/RF principles, etc. This does not even address the fine examples of craftsmanship and building skills the "other" videos teach a ham about cabinets, muppet boards, etchings, etc.
To that end, have you considered DropBox (or similar) as an archive for your works? Their might be overhead involved but it might be an effective way to allow folks to share your efforts. (But, then again, you already have your wonderful, minimalist website festooned with treasures and fine examples of your superior documentation efforts.)
Just suggestions to which I will add that we lot are a monumentally lazy bunch. We will go out, watch a video, not comment or up-vote and then wander on. (Well, it is a failing of mine.) We all know you as a good friend and true, a valuable contributor to our pathetic existences, and a producer of terrific resource material yet are not willing to expend a scintilla of effort to say "thanks".
So here it is: Thanks! And keep the videos up!
In kindest and sincerest appreciation!
--
William, K6WHP
"Cheer up, things could get worse..so I cheered up and, sure enough, things got worse!"
|
Re: Low cost Visor Magnifier even lower cost
I do like BillC...
I need readers for some things +1.5 both eyes and no other astigmatism.
However I can buy at the dollar store +1.5, +1.75, +2 all the way to +3.5
"readers" for doing close fine work. I Keep my nominal reader handy and
a second pair I just wear over them for doing SMT work down to 0603.
fast and easy solution and far less learning intensive than stereo
microscope.
--
Please reply on the group, no private emails we as a group get to share info that way.
|
Jack
.jpg)
David Wilcox K8WPE
Ken KM4NFQ