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noobbbb

suggestions for antenna SDR

Hey until now I was only watching and testing some antennas from here,( bester wich I extend a bit, quazi bow tie, biquad , double biquad and others, I didn't have the time to make the invAmos --all 2,4G) Now I get my hands on SDR and want to make some broadband antennas for it. It has 2 sma HF and UF 100khz to 1700Mhz.
Do you have some suggestions for the toy?

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,,, show your Software-defined radio (SDR)...!!!

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its similar to that one https://www.ebay.co.uk/itm/252473370203?hash=item3ac895e65b:g:UA0AAOSwRypZjTsx exept the chipset is  RTL2832 & R820T.  I catn't upload pics because I am waiting the dellivery today or tommorow and the seller have removed it. But as soon as I get it the screwdrivers will play and upload the real one

that one is more like it hhttps://www.ebay.co.uk/itm/201773887159?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20201210111452%26meid%3D205512cc9f374948af29c314e28d4c02%26pid%3D101196%26rk%3D1%26rkt%3D8%26sd%3D252473370203%26itm%3D201773887159%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWebWithBBEV2bAndUBSourceDemotionWithUltimatelyBoughtOfCoviewV1%26brand%3DUnbranded&_trksid=p2047675.c101196.m2219&amdata=cksum%3A201773887159205512cc9f374948af29c314e28d4c02|enc%3AAQAGAAACMOj9yveJBnYbHnaj9PwbsbAqVkIQWs%2FC5jogax5z8welyvuM60DeltUmLlTuAY42XXda7lEYcPp4CfE1LGj3JPJVjuMKzetEcIqbMDwY0AgR003LR%2FtjyKYdcjaecqQj3vvd5gOmNZfvyNNij%2BUjGfS9LIVMEcBTOzTlKtRfDSKreAjKPWzOOMLui4maCuD3EZkuYrmVY3PGKSJMwRuq5%2FIUppbUsCcd4fm4rkQdHlWzv%2BHa8y%2BUHJSekFxjz8RV1OnZV%2FUZSYfwhJieS%2FbWlVabSbgmBAUJjO1%2BVgBykRUsoma%2F7eCoKlmui6Ki8ojVYmr6WHuOH3cB3SlRt6qKqwJtKDdqDfMjxPtMhPASuFIyui5TUWmcPS1kAdUR8bULKg76rj1RmegBf3f7NWBy%2FijkXXEw9vQH881o0TLBE1pW45BZ8VsYfWDcjouJU93tVh1PLG6rKSDlqU2ja1eBUpP%2BQF49t7oZkZ7nHXHHIjKSl%2FX4xuhuT8eoCMznUJaV6tJfJKKpKCeMe0PdimKSuPZxUUAZNDFUF5VBE%2FntBg5kAETQyq0R3RlXWA4KNZ4Y4jCM2lRcu6D3zxSDaf0dKKHHOlq1kgwWsBbfdBFLwD3ullWQgORbhPXZ8C5yuRqNC1JmxDAYcbKtAWEiSWzoLqKFuup6tqIg12xor1CAbHH7sOxfBBGeFBdluvULFhtDFfaJN577nVeej9FTfcssohwCnZAzNR73HsGBhk9L9w4B|ampid%3APL_CLK|clp%3A2047675

 

Edited by noobbbb
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,,, well, what do you want, to replace the existing antenna with another one..???

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the one I have ordered have no antennas at all. The seller use them for another project so I want to make some antennas for it. If possible to be broadband to cover as much of the freq as possible.

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,,, for the car it is more difficult to make an UWB omnidirectional antenna, so you have to buy one..!!!

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,,, then you could try something like that...

,,, and you can contact the user "Sl4va" to send you the laser cut antenna..!!!

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It seems they use VIVALDIs (modified) on pcb for this...

Edited by clanon

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yes some of those looks easier to make because I don't have laser cutter around. Maybe from pcb. If you have some suggestions for antenna to buy it also welcome. 

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Can you burn your own PCB...?

we could dig up some design...

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yep, I remmember my brother burn his pcb's with some solution( I dont know the name of it on english "some kind of blue stone") but for 2-3 days and the copper layer was of and the left was what he draw with a permanent marker. I can try to print the pcb and repeat it with marker to the same measurments

 

 

Edited by noobbbb

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I'll try that VIVALDI on FR4 i'll tell later how it went

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if you have two connectors...do you know the frecuencies EACH connector covers...

Is the whole bandwidth 100khz to 1.7 ghz...? (or more)

divided into TWO antennas...

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i think is 25Mhz to 1.7ghz...

and the LF is below that , any wire antenna would do there...

s-l1600.jpg

Edited by clanon

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Vivaldi is OK ABOVE 1ghz...

not much GAIN tho, and it SUCKS under 1ghz...we must try and reconsider...JOMY might have a UWB design...CONE and DISC...

efficiency.JPG

viv.JPG

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I have ordered one of https://moonrakeronline.com/skyscan-desktop-25-2000mhz-scanner-antenna  to see how it behaves. In the meantime there is cnc laser cutter that may accept commercial orders for some bat wings at the 2.4 and 5 (as dish feeder ) and also Wide Band Batwing Dual from the admin post. Otherwise the connectors are 100Khz-30Mhz and 25Mhz-17000Mhz. Also I am thinking to do some more bester if I get my hands on latte cuz the last time I did it with drill and sand paper to the exact measurements .... long long time do get there.  On the to do list Bi-connical( looking for materials)  and Inv-ammos. I will post the dimensions fot the skyscan if you like to make some simulations.

Edited by noobbbb
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On 10/15/2021 at 11:22 PM, noobbbb said:

I have ordered one of https://moonrakeronline.com/skyscan-desktop-25-2000mhz-scanner-antenna  to see how it behaves. In the meantime there is cnc laser cutter that may accept commercial orders for some bat wings at the 2.4 and 5 (as dish feeder ) and also Wide Band Batwing Dual from the admin post. Otherwise the connectors are 100Khz-30Mhz and 25Mhz-17000Mhz. Also I am thinking to do some more bester if I get my hands on latte cuz the last time I did it with drill and sand paper to the exact measurements .... long long time do get there.  On the to do list Bi-connical( looking for materials)  and Inv-ammos. I will post the dimensions fot the skyscan if you like to make some simulations.

I just got the antenna. Next week I will have stubler  to take the exact measurments and post it here.

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