#370

[@transmitterguy478]

The small "F" connected antenna is from a Dish receiver to receive the UHF remote control signal on TV 2. The receiver has 2 tuners in it and a coax feeds the TV2 signal and the remote control sends a UHF signal to change channels.

[@billsmotrilla6215]

You will find the measurements shift quite a bit when you orient the antennas vertically, and set the Nano down so the stray capacitance from your hands does not alter the readings.

[@moosiani1]

You are correct. I learned that just. The other day. Had the antenna laid down which changed drastically once i put on an extension cable and made the antenna hang off the table vertically. Another thing I found was the software is definitely the way to use the nano. Lastly this guy didn’t even set any parameters. Hes observing the full scale of the device.

[@danmyself5341]

antenna flag french to english translation: This antenna must be connected to the UHF connector called REMOTE ANTENNA in the back of your receptor

[@BretChilcott]

Thank you for sharing your knowledge. The knowledge you share is helping push the ham radio forward. 73 Bret/AC0AE

[@souta95]

That last antenna with the F connector looks like an RF Remote receive antenna for a Dish Network satellite receiver box.

[@nathantaylor680]

Yup agreed

[@OC35]

That connector on the short lead with the last antenna is the european TV antenna connector. It's called a Belling Lee connector in the UK.

[@vidasvv]

GREAT video ! I believe the last antenna is for DISH Networks remote control that plugs into the back of the box. 73 N8AUM

[@henlij]

+1 agreed

[@christophersylvain4085]

about the two diameter whip antenna: perhaps it's a sleeve (or bazooka) design? to be more accurate, all whip antennas ought to be tested in the middle of a ground plane sized for the lowest frequency of interest. when mounted on a HT, -you- are part of the antenna system.

[@IMSAIGuy]

kzbin.info/www/bejne/rZbQYXelhcpohZI

[@KI5BEZ]

Imo, All HT antennas should be tested holding the ground, because generally you are holding the ht to transmit. Thanks for the video!

[@rayerdinc2441]

Excellent video thank you.

[@cnc55124]

Comet antennas are available thru MFJ

[@msaradio7455]

I bought one of these because of your videos on it.

[@IMSAIGuy]

I like the radio playlist you have. The ARMY morse code one was great. I remember having to do 20WPM to get my extra

[@msaradio7455]

@@IMSAIGuy nice, and thanks. I'm only at about 14-15wpm currently, but I find myself looking for newbies in the slow code portion of the bands to help them out and chat with. I've watched all the videos you've made on the nano, and figured it'd be perfect for field use, thanks a lot for your time.

[@webmastercaribou7570]

Receive is for use with scanners. Good video

[@PapasDino]

TNX for the comparison...BTW, Comet Antennas is still alive and well. Although I prefer Diamond the Comet's are just as good.

[@uploadJ]

Yup. Appreciate the time spent making the measurements and taking the time to do a video too!

[@MirlitronOne]

Moral: size matters.

[@davideisenberger6197]

Great video ! Thank you for taking your time for this - my nano vna is great however when turning the unit off with the slide switch, the unit powers down BUT the LED next to the connector stays lit and eventually drains the battery- hows yours? 73 es Thanks

[@IMSAIGuy]

my LED stays on for a minute or two then turns off. battery is not drained

[@stephenjones9153]

The Blue Led should stay on for no more than 5 Minutes maximum because the charging circuit is in line when switched off for this time..It also switches the Led back on when a charger is connected with the unit switched off...This will not drain the battery.

[@vidasvv]

@@stephenjones9153 depends on which firmware, I have old firmware and stays on about 45 seconds

[@davidsaunders1125]

The. Reason you are getting bad readings on the Chinese antennas, is because, very sensibly, the antennas are designed to be used on a TX Rx held near your head! They actually use a dummy head to test them! Try holding the antenna by the metal base and near your head and the resonant frequency will jump into Ham bands. A lot of Chinese copies are actually very good. M0IIZ.

[@W8ASA]

When using a BNC connector, be sure to turn it to lock it.

[@catalinalb1722]

Any idea if this mini VNA would be able to measure a loop NFC antenna (13,56MHz)?

[@IMSAIGuy]

yes should be fine

[@IMSAIGuy]

oh, the antenna needs to be 50 ohm

[@uploadJ]

Depends on how accurate the Nano is on measuring impedances with its little 50 Ohm bridge when the Z is far away from a nominal 50 Ohm resistive load ...

[@uploadJ]

re: " the antenna needs to be 50 ohm" I'm assuming that the Nano can only do calculations for Z in a 50 Ohm system, so, that would be true IF you depend only on SWR and RL values. The AA-55 Zoom by the other guys can be "set" to do measurements in a 600 Ohm system ... it displays SWR relative to a 600 Ohm system or 'line' Z. Also the Zoom will read out in Rx and Zx, so, useful for making Z measurements on the wire itself.

[@IMSAIGuy]

@@uploadJ see kzbin.info/www/bejne/Z2ikhmVqgNmMock

[@TheWinning247]

"This antenna should be connected to the UHF REMOTE ANTENNA socket at the back of your receiver. Made in China" Is a rough french - english translation for you. I'm sure iy's been google translated umpteen times by now but hey...

[@TheBrynu]

your extending the length of the antenna with the adaptors so its not going to be accurate reading

[@IMSAIGuy]

adding length only effects the phase information not SWR. At low frequencies like 144mhz it doesn't really matter even then. Yes to be more accurate you can calibrate at the end of the connector. I have videos showing that.

[@alklapaxida850]

more antenna is required,

[@catalinalb1722]

Nooo... We want more RF 🙂😊!!!

[@kaybhee6]

keen