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Re: Pre-wound Toroids
I don't LOVE winding toroids, but I also don't mind it. At least not the ones that you're going to encounter in most ham kits: T37, T50, or T68 cores with reasonably flexible wire. The tiny sizes (T25
I don't LOVE winding toroids, but I also don't mind it. At least not the ones that you're going to encounter in most ham kits: T37, T50, or T68 cores with reasonably flexible wire. The tiny sizes (T25
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By
Shirley Dulcey KE1L
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#44813
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Re: Pre-wound Toroids
Humor is a funny thing...
I thought it was funny for the same reason. Hams are grasping at straws trying to attract a generation for whom radio isn't magic at all. 9 year olds walk
Humor is a funny thing...
I thought it was funny for the same reason. Hams are grasping at straws trying to attract a generation for whom radio isn't magic at all. 9 year olds walk
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By
Eric KE6US
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#44812
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Re: U3S remaining issues I have
Sorry but you are wrong. Highest frequency goes in slot ONE. It is in the manual.
Roger
G3YTN
Get BlueMail for Android
On 4 Apr 2020, at 17:50, dl2arl@... wrote:
Sorry but you are wrong. Highest frequency goes in slot ONE. It is in the manual.
Roger
G3YTN
Get BlueMail for Android
On 4 Apr 2020, at 17:50, dl2arl@... wrote:
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By
Roger Hill
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#44811
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Re: U3S remaining issues I have
Hello dear OM Andrew,
I humbly disagree with your opinion above. Out of my point of view, the LPFmodule for the highest frequency should go into the slot closest to the PA. Related to the numbering
Hello dear OM Andrew,
I humbly disagree with your opinion above. Out of my point of view, the LPFmodule for the highest frequency should go into the slot closest to the PA. Related to the numbering
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By
DL2ARL
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#44810
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Re: Pre-wound Toroids
Well I suppose I am on the other side of this conversation. I did find it funny. When I read this I thought of my 3 kids not necessarily all kids. No way would they want to wind toroids and I can
Well I suppose I am on the other side of this conversation. I did find it funny. When I read this I thought of my 3 kids not necessarily all kids. No way would they want to wind toroids and I can
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By
Tim and Janet
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#44809
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Re: Pre-wound Toroids
On Sat, Apr 4, 2020 at 09:17 PM, James Daldry W4JED wrote:
Tempting. Not too bad a price for prime toroids, too.60¢ per toroid and a tool to the end user IS good.
+1
On Sat, Apr 4, 2020 at 09:17 PM, James Daldry W4JED wrote:
Tempting. Not too bad a price for prime toroids, too.60¢ per toroid and a tool to the end user IS good.
+1
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By
Da Amazin' man G0FTD
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#44808
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"7.1 - Release of the Magic smoke" v 50W PA
#magicsmoke
#smoked
This afternoon for your reading pleasure bring you
"7.1 - Release of the Magic smoke"
A couple weeks ago went to do alignment and fuse on ps I used blew. Set all side. Yesterday thought about
This afternoon for your reading pleasure bring you
"7.1 - Release of the Magic smoke"
A couple weeks ago went to do alignment and fuse on ps I used blew. Set all side. Yesterday thought about
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By
KN4ULD
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#44807
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Re: Pre-wound Toroids
I really meant no offense by it can we just drop it!
73s
Rick, W2JAZ
--
73
Rick, W2JAZ
I really meant no offense by it can we just drop it!
73s
Rick, W2JAZ
--
73
Rick, W2JAZ
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By
Richard Lawn
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#44806
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Re: Ultimate3s Power output
You did check here:
https://www.qrp-labs.com/qcx/qcxtrouble
Ed
AB8DF
Sent from Mail for Windows 10
You did check here:
https://www.qrp-labs.com/qcx/qcxtrouble
Ed
AB8DF
Sent from Mail for Windows 10
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By
Ed Kwik
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#44805
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Re: Pre-wound Toroids
Tempting. Not too bad a price for prime toroids, too.
Jim
On 4/4/20 3:18 PM, Colin Evans M1BUU wrote:
Tempting. Not too bad a price for prime toroids, too.
Jim
On 4/4/20 3:18 PM, Colin Evans M1BUU wrote:
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By
James Daldry W4JED
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#44804
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Re: #QCX40 Rev5 LCD contrast adjustment appears to cause massive current draw
#qcx40
Hi, Paul
Here are my guesses:
(1) R65 is mis-marked, actually 0.3 ohms. Or the topside wire is touching something.
(2) There is a wire scrap wedged underneath R47
(3) There is a wire scrap wedged
Hi, Paul
Here are my guesses:
(1) R65 is mis-marked, actually 0.3 ohms. Or the topside wire is touching something.
(2) There is a wire scrap wedged underneath R47
(3) There is a wire scrap wedged
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By
James Daldry W4JED
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#44803
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Re: Pre-wound Toroids
I'm with Arv and Colin as well. I don't see what's funny about kids learning to wind toroids and bring introduced to ham radio. The abundance of small affordable kits these days could help rekindle
I'm with Arv and Colin as well. I don't see what's funny about kids learning to wind toroids and bring introduced to ham radio. The abundance of small affordable kits these days could help rekindle
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By
Don VE3IDS
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#44802
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Re: Pre-wound Toroids
Well, I was blessed(?) with four aunts and some of them decided to teach me cork knitting so they could get on with watching soap operas in peace.
It is not a million miles away from
Well, I was blessed(?) with four aunts and some of them decided to teach me cork knitting so they could get on with watching soap operas in peace.
It is not a million miles away from
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By
Jim Mcilroy
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#44801
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Re: Pre-wound Toroids
I'm with Arv, I don't see what's funny.
Getting kids involved with making toroids is a good idea. Winding a toroid is a fulfilling process, you can see instantly whether you've done a good job or
I'm with Arv, I don't see what's funny.
Getting kids involved with making toroids is a good idea. Winding a toroid is a fulfilling process, you can see instantly whether you've done a good job or
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By
Colin Evans M1BUU
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#44800
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Re: Pre-wound Toroids
Introducing kids to ham radio is a great idea, but the thought of them winding toroids I found funny.
--
73
Rick, W2JAZ
Introducing kids to ham radio is a great idea, but the thought of them winding toroids I found funny.
--
73
Rick, W2JAZ
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By
Richard Lawn
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#44799
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Re: Ultimate3s Power output
Thanks Andy, will have a look for it. I seem to vaguely remember seeing the thread some time ago.
Hi Jakob, I'm getting about 0.5w on 20m and about 1w on 30m.
Thanks for the help guys.
Dave, G8PGO
Thanks Andy, will have a look for it. I seem to vaguely remember seeing the thread some time ago.
Hi Jakob, I'm getting about 0.5w on 20m and about 1w on 30m.
Thanks for the help guys.
Dave, G8PGO
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By
Dave, G8PGO
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#44798
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Re: Ultimate3s Power output
Hi Dave,
as its 20m your problem is most likely to be the caps on the lpf board, search the forum and you'll find several references to it. I can't remember which ones off the top of my head but it's
Hi Dave,
as its 20m your problem is most likely to be the caps on the lpf board, search the forum and you'll find several references to it. I can't remember which ones off the top of my head but it's
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By
M0RON
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#44797
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Re: Question regarding measuring power output.
Hi Power measured on a U3S running at 5V on the PA at 20M bilfler wound, using R &S NRPS8:
and Just under 7.5V PTP on the scope (7.375V) nothing wrong with scopes!
73 Andrew G8UUG
Hi Power measured on a U3S running at 5V on the PA at 20M bilfler wound, using R &S NRPS8:
and Just under 7.5V PTP on the scope (7.375V) nothing wrong with scopes!
73 Andrew G8UUG
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By
Andrew Lenton
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#44796
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Re: Upgraded Firmware to 1.04
Ok, then that explains my concern when I saw one oscillator value of 27,004. So I wont change anything and judging from my recent QSO there was no mention of being off freq.
Thanks
Ok, then that explains my concern when I saw one oscillator value of 27,004. So I wont change anything and judging from my recent QSO there was no mention of being off freq.
Thanks
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By
Allen Lee <alee@...>
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#44795
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Re: Ultimate3s Power output
This drift in power output is most likely a thermal effect. The BS170 changes its offset voltage in function of the junction temperature.
See https://www.onsemi.com/pub/Collateral/BS170-D.PDF
You may
This drift in power output is most likely a thermal effect. The BS170 changes its offset voltage in function of the junction temperature.
See https://www.onsemi.com/pub/Collateral/BS170-D.PDF
You may
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By
jakob@...
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#44794
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