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TinySA or ULTRA Antennas

Mike C. All Messages By This Member #18316 Hi Group, I agree with the suggestion to get away from the 'ham' topics, however, RF antennas from all aspects of transmitting or receiving will play a part in both disciplines. That said, shouldn't we discuss what we find with various antenna designs, both pro and con? The only suggestion would be to only talk about what works and what may not and in that light stay away from+0J-,* math. We can leave the math for our handy dandy VNA. Example: What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? Mike C. Sand Mtn GA
W0LEV All Messages By This Member #18317 But one can not properly address antenna impedance without considering both the real and complex portions of those impedance measurements made with the NanoVNA.? Without the ± jX term to the impedance, one may as well just use a standard SWR meter - a totally scalar measurement.? Further, without considering the ± j X term of the impedance, you're missing a whole bunch of the power of vector analysis.? And.....that would be the NANOVNA.? A little bit of math won't hurt anyone.? We're not speaking calculus or General Relativity, here! Dave - W?LEV toggle quoted message Show quoted text On Thu, Oct 10, 2024 at 3:58?PM Mike C. via <mg=[email protected]> wrote: Hi Group, I agree with the suggestion to get away from the 'ham' topics, however, RF antennas from all aspects of transmitting or receiving will play a part in both disciplines. That said, shouldn't we discuss what we find with various antenna designs, both pro and con? The only suggestion would be to only talk about what works and what may not and in that light stay away from+0J-,* math. We can leave the math for our handy dandy VNA. Example: What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? Mike C. Sand Mtn GA -- Dave - W?LEV
W0LEV All Messages By This Member #18318 QUOTE (Mike):? What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? What is meant by "a 1/32 wave"?? 1/32 of 2.8 GHz would be 87.5 MHz.? To what are you referring? Dave - W?LEV ? toggle quoted message Show quoted text On Thu, Oct 10, 2024 at 3:58?PM Mike C. via <mg=[email protected]> wrote: Hi Group, I agree with the suggestion to get away from the 'ham' topics, however, RF antennas from all aspects of transmitting or receiving will play a part in both disciplines. That said, shouldn't we discuss what we find with various antenna designs, both pro and con? The only suggestion would be to only talk about what works and what may not and in that light stay away from+0J-,* math. We can leave the math for our handy dandy VNA. Example: What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? Mike C. Sand Mtn GA -- Dave - W?LEV
Erik Kaashoek All Messages By This Member #18319 Dave, It would help if you focus on helping and base your replies on a positive understanding of the question. ? Suggestions and discussions about a good antenna for a specific application is welcome in this group. But please do not stear the discussion away from tinySA related contant ? If you think someone is making a wrong statement it would be appreciated if you ask clarification questions, just in case you misunderstood something -- Designer of the tinySA For more info go to
W0LEV All Messages By This Member #18320 Eric, I have just been "criticised" (yes, this afternoon) on another group for long posts due to EXPLAINING the reason(s) behind my answer(s).? Just supplying the answer teaches nothing.? The reason behind the answer teaches a bit of engineering and possibly physics.? I'll stick with my "longer" explanations in an effort to help others in expanding their knowledge.? Just me......... Dave - W?LEV? toggle quoted message Show quoted text On Thu, Oct 10, 2024 at 6:42?PM Erik Kaashoek via <erik=[email protected]> wrote: Dave, It would help if you focus on helping and base your replies on a positive understanding of the question. ? Suggestions and discussions about a good antenna for a specific application is welcome in this group. But please do not stear the discussion away from tinySA related contant ? If you think someone is making a wrong statement it would be appreciated if you ask clarification questions, just in case you misunderstood something -- Designer of the tinySA For more info go to -- Dave - W?LEV
Mike C. All Messages By This Member #18321 开云体育 Whoops! I should have said "1/32 wave length" as my reference to 2.4GHz.? In that case it would equal 125mm, nice catch. :0) Mike C. Sand Mtn GA On 10/10/2024 12:16 PM, W0LEV wrote: toggle quoted message Show quoted text QUOTE (Mike):? What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? What is meant by "a 1/32 wave"?? 1/32 of 2.8 GHz would be 87.5 MHz.? To what are you referring? Dave - W?LEV ? On Thu, Oct 10, 2024 at 3:58?PM Mike C. via <mg=[email protected]> wrote: Hi Group, I agree with the suggestion to get away from the 'ham' topics, however, RF antennas from all aspects of transmitting or receiving will play a part in both disciplines. That said, shouldn't we discuss what we find with various antenna designs, both pro and con? The only suggestion would be to only talk about what works and what may not and in that light stay away from+0J-,* math. We can leave the math for our handy dandy VNA. Example: What does the signal of a 1/32 wave look like on our TinySA or Ultra at 2.4GHz? Mike C. Sand Mtn GA -- Dave - W?LEV
Paul Wilson VA6PW All Messages By This Member #18322 开云体育 Well said Dave. 73 de Paul VA6PW On 10/10/2024 13:03, W0LEV wrote: toggle quoted message Show quoted text Eric, I have just been "criticised" (yes, this afternoon) on another group for long posts due to EXPLAINING the reason(s) behind my answer(s).? Just supplying the answer teaches nothing.? The reason behind the answer teaches a bit of engineering and possibly physics.? I'll stick with my "longer" explanations in an effort to help others in expanding their knowledge.? Just me......... Dave - W?LEV? On Thu, Oct 10, 2024 at 6:42?PM Erik Kaashoek via <erik=[email protected]> wrote: Dave, It would help if you focus on helping and base your replies on a positive understanding of the question. ? Suggestions and discussions about a good antenna for a specific application is welcome in this group. But please do not stear the discussion away from tinySA related contant ? If you think someone is making a wrong statement it would be appreciated if you ask clarification questions, just in case you misunderstood something -- Designer of the tinySA For more info go to -- Dave - W?LEV
Jim Shorney All Messages By This Member #18328 Keep on 'splaining Dave. I enjoy reading them, On Thu, 10 Oct 2024 19:03:27 +0000 "W0LEV via groups.io" <davearea51a@...> wrote: I'll stick with my "longer" explanations in an effort to help others in expanding their knowledge. -- 73 -Jim NU0C
Julio VE3FH All Messages By This Member #18330 Good morning Dave, I certainly find your detailed explanations extremely useful, please do not stop, and the more math the better? 73, Julio VE3FH On Thursday, October 10, 2024 at 03:03:53 p.m. EDT, W0LEV <davearea51a@...> wrote: Eric, I have just been "criticised" (yes, this afternoon) on another group for long posts due to EXPLAINING the reason(s) behind my answer(s).? Just supplying the answer teaches nothing.? The reason behind the answer teaches a bit of engineering and possibly physics.? I'll stick with my "longer" explanations in an effort to help others in expanding their knowledge.? Just me......... Dave - W?LEV? toggle quoted message Show quoted text On Thu, Oct 10, 2024 at 6:42?PM Erik Kaashoek via <erik=[email protected]> wrote: Dave, It would help if you focus on helping and base your replies on a positive understanding of the question. ? Suggestions and discussions about a good antenna for a specific application is welcome in this group. But please do not stear the discussion away from tinySA related contant ? If you think someone is making a wrong statement it would be appreciated if you ask clarification questions, just in case you misunderstood something -- Designer of the tinySA For more info go to -- Dave - W?LEV
W0LEV All Messages By This Member #18331 Thanks, Jim.? I shall try.... Dave - W?LEV toggle quoted message Show quoted text On Fri, Oct 11, 2024 at 12:04?PM Jim Shorney via <jimNU0C=[email protected]> wrote: Keep on 'splaining Dave. I enjoy reading them, On Thu, 10 Oct 2024 19:03:27 +0000 "W0LEV via " <davearea51a=[email protected]> wrote: > I'll stick with my "longer" > explanations in an effort to help others in expanding their knowledge. -- 73 -Jim NU0C -- Dave - W?LEV
73_Fred All Messages By This Member #18336 for me it was clear from the very beginning that he meant "1/32 wave length" without any need for further discussions. Thats what Erik wrote: "a positive understanding of the question" - would be helpful. But people ...

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