I am looking for a monopole, adjustable lenght, 50 ohm reference impedance and SMA connector tu use with my LimeSDR mini.

I have found the ANT500 from greatscottgadgets, but 37 € + shipping seems to be very expensive.

Isn't it ? Where I can find some cheaper parts, avoiding chinese junk ?

Thanks.
s.

 

I am looking for a monopole, adjustable lenght, 50 ohm reference impedance and SMA connector tu use with my LimeSDR mini.

I have found the ANT500 from greatscottgadgets, but 37 € + shipping seems to be very expensive.

Isn't it ? Where I can find some cheaper parts, avoiding chinese junk ?

Thanks.
s.

That's a pretty tall order. You do realize that changing the length changes the impedance and last I checked "non-Chinese" junk was not selling for appreciably less. I suppose you could build one but that would require effort and the acquisition of readily available parts especially the SMA connectors.

 

Hello,

Why not try this cheaper one:
https://www.amazon.es/dp/B07L8Z2HCF/ref=dp_prsubs_3

Bertus

 

Hello,

Why not try this cheaper one:
https://www.amazon.es/dp/B07L8Z2HCF/ref=dp_prsubs_3

Bertus

That's a 75 Ω model, and the connector doesn't look like and SMA type. The TS did not specify a frequency band of interest for the Lime-SDR.

 

Hello,

@Papabravo , You are right, that would be an F connector.
Perhaps the TS could have a look at this one:
https://www.amazon.es/comtrak-SRH-775-antena-Bibanda-portátil-Conn-SMA/dp/B01HSC50FC/ref=sr_1_136?__mk_es_ES=ÅMÅŽÕÑ&crid=3EBRI2BK4CRP1&dchild=1&keywords=sma+antena&qid=1613401215&refinements=p_72:831280031&rnid=831271031&s=electronics&sprefix=sma+a,electronics,160&sr=1-136

Bertus

PS I have linked a spanish site, as the TS IP seems to be spain.

 

Hello,

@Papabravo , You are right, that would be an F connector.
Perhaps the TS could have a look at this one:
https://www.amazon.es/comtrak-SRH-775-antena-Bibanda-portátil-Conn-SMA/dp/B01HSC50FC/ref=sr_1_136?__mk_es_ES=ÅMÅŽÕÑ&crid=3EBRI2BK4CRP1&dchild=1&keywords=sma+antena&qid=1613401215&refinements=p_72:831280031&rnid=831271031&s=electronics&sprefix=sma+a,electronics,160&sr=1-136

Bertus

PS I have linked a spanish site, as the TS IP seems to be spain.

I've actually paid approximately that price ($30-$75) for 2M, 220(~1.25M) & 440 (70 cm) vertical antennas with PL259 connectors. They are all fixed length to keep the SWR within reasonable limits (< 2:1).
I'm not quite sure what the TS is complaining about.

 

Hello,

Thanks for your replies.

The ANT500's specified bandwidth (no S parameters plot are shown into the DS) is enough to play with SDR with this board.

I don't have any particular frequency requirements.

As far as I understand these are the common prices for a minimum seriousness antenna.

s.

 

Well, to be precise it seems that there is no datasheet for the mentioned antenna... I wonder why .

The PDF I found it is the first from google search for ant500 datasheet.

s.