900MHz Yagi changing the coax and taking a look at the balun

[@ramjet4025]

Andrew, Tiniri asks below what the impedance of the "innor coax" is. The inner connector has the shield removed and the shield becomes the inside of the tube of the dipole. This is not 50 ohms but a higher impedance, probably closer to 100 or more ohms. It appears to be a copy of other similar dipoles but missing the superior design.

[@ozgur280]

So good video thank you so much... How could we decide length of the tubes? and positions etc. Best regards.

[@3rdworldtrillionaire46]

Don't you want to show us a VSWR chart before and after the mod ?

[@ManuelPinner]

Thank for this Information, Now I know how to make the Balun for these Antennas,

[@djtahir7752]

Good job sir ...keep it ...

[@sunandajayakoday5418]

Very useful video.Thanks Bro.

[@cyberjack]

Thanks buddy

[@devgiri8613]

I would appreciate if you could provide the measurement template for this yagi as always Thanks 😊

[@Joe_ProDJ]

In terms of continuity test, should the outer and inner part of the connector test short or open?

[@tiniri5208]

Great video... what is the impedance of the replaced inner coax??

[@stridermt2k]

Nice sir! Hoo!

[@justainereid5]

can you give me links to parts for the cantenna build especially the stainless can that is used. Cant find dimensions anywhere. Urgent help

[@jcrimethereal17]

Hello my brother please get tutorial about how to use vistumbler

[@viocaia]

Hey! How can we lower the tuned frequency I wish to use this for LORa 868Mhz..is there any calculator for this kind of antenna, I've searching for a schematic , no results..Thank you and A Happy New Year!

[@SimonShaws]

So, the coax inside the tube is acting as a balun? That's something I have never seen before. I usually use a quarter wave folded balun, however I really liked the sleeve balun you did recently on another Yagi video. Much neater and far less room consumed. I usually earth the centre point to the boom with almost a point connection. (Like a bolt through to the boom). This thing has a huge connection. Guess the bandwidth is increased. Would really like to see frequency response and a VSWR chart.

[@noimnotarobotcanubeleiveit7024]

please show it on a vna if you have one

[@Shreyam_io]

i have been watching old video of yours..i was wondering if you ever made 1691 MHz antenna with a LNA for GOES-13 satellite specially it needs a parabolic dish to get signals

[@freefilms10000]

what transmits on 900MHz?

[@kyawsankoko-kyarpwarvillag3424]

I got a lot of knowledge

[@Paulman50]

What was the gain advantage over the original.

[@SimonShaws]

Gains really hard to measure.

[@tik-tokeurope752]

Is possible tu put a lmr400 cable on that?

[@andrewmcneil]

Yep

[@tik-tokeurope752]

@@andrewmcneil I notice you put a cupper wire, inside, is a must tu put lmr400 wire like this, or should leave it and only solder the lmr400 cable, I newbie, sorry for asking, the 2 mm cupper wire will fit, inside?

[@tik-tokeurope752]

And will have the same frencwency?

[@TuttleScott]

I got one of those cheap chinese yagis off ebay for wifi and when I pulled off the black caps the parasitics were all random lengths and shifted up and down. total pos. must've been made on hangover monday.

[@noimnotarobotcanubeleiveit7024]

yep trash. a test on vna shows most several hundred mhz off frequency and bad swr

[@SteveWrightNZ]

Likely ruined the impedance match doing that..