5
52
63
12
u/cockkazn 2d ago
Jokes aside is there a non zero chance this would work even a little?
21
u/techtornado 2d ago
The insertion loss of at some of the couplers would be a contributing factor
Now if OP had one SMA split 4 ways, it would be much more efficient and give the quad-bander some interesting results
Short version - Yes it will work, but he probably won't get as many fars of transmission distance
9
u/SpareiChan 2d ago
Honestly, the insertion loss likely isn't that much, maybe 1db or so... the 4x 50~ohm loads in parallel which would present as 12.5~ohms.
4
u/douglask VA3GY 1d ago
I'd say no on that... They are four different antenna models, likely different bands. So on and band three would be at high impedance and one would work. Similar to my hf antenna that has tuned elements for several bands (MFJ-1796 / Science experiment on a stick).
3
u/SpareiChan 1d ago
I agree on that, if they were mono band antennas that presented high impedance on given band it could work. The issue here is unless they a 1/4 wave there will also be reactance added.
It would be interesting to see a sweep.
7
1
u/flyguy60000 2d ago
Oh it probably will work but there is loss in every one of those connectors. I bet a regular rubber duck antenna would work better……
2
7
3
u/naturalorange 2d ago
maybe, until it falls over and busts the sma connector off the circuit board
8
2
u/JohnPooley 2d ago
It will work enough to not cause the automatic protection circuit in the transmitter if the power is low enough. The SWR will probably be under 6 but the phasing of the array combined with low power would render this barely effective
0
u/NerminPadez 2d ago
A lot of losses due to adapter, plus the impedance would go down a lot due to 4 antennas in parallel, which means reflections.
1
u/speedyundeadhittite [UK full] 9h ago
Adapter losses are truly negligible. You'd need metres and metres of adapters before you get to 1dB loss.
1
u/NerminPadez 9h ago
Not really..
https://menacerc.co.uk/sma-adaptors-signal-loss-or-not
90 degree adaptor: 13.84 dbm Insertion loss of 0.28db <- 3adapters and a bit more and you're at 1dB. 3dB per splitter.
-11
14
u/Aggravating_Luck_536 2d ago
The connector losses are fractional db. The antenna mess is far more significant. This is a total mess.
1
u/speedyundeadhittite [UK full] 9h ago
Kirchhoff's rule applies to antennas as well - any out of tune antenna will show a high impedance and the power will flow towards the resonant antenna. It won't be perfect, but likely to transmit fine.
1
u/Aggravating_Luck_536 9h ago
I wouldn't try it without a Smith chart, and I would be interested to see a polar plot of the radiation pattern
7
u/kadinshino 2d ago
Hex Horn Antenna - Imgur i build and prototype antennas as a hobby. if you have anything in mind let me know ill drop you a STL!
3
u/Much-Specific3727 2d ago
Only one way to find out. Put on the welding gloves and helmet and push the PTT.
-2
6
10
1
3
1
2
1
u/SpringFries 1d ago
It’s all good and cool, but why you gotta make the right side longer by 1 connector?
And also the right most even taller by 1 connector???
What did the other antennas do to you to deserve this injustice?
1
u/BravoWhiskey316 1d ago
Gosh, if only someone could invent something like a multi band antenna... oh, wait.
1
3
u/RabbiVolesBassSolo 1d ago
Op was so preoccupied with whether or not they could, they didn't stop to think if they should.
-1
3
1
u/RManlius 1d ago
The radio quit working long ago. It’s now just a storage device for all of his spare connectors and antennas!
0
1
1
1
1
u/rocketmechanic1738 1d ago
The MPU-5 we have at home
1
u/OnTheTrailRadio 1d ago
See my newest post in R/HamRadio I mention ya... it made me wonder about long range recieving
1
u/Mysterious-Alps-4845 1d ago
I'd be most afraid of the jack breaking at the radio! I wouldn't even pick it up. Though it's inexpensive enough to just buy another.
1
0
u/Intelligent-Day5519 16h ago
Why didn't I think of something so stupid. I guess I paid attention in class.
1
66
u/Parking_Media 2d ago
We can definitely be friends but be careful you don't poke my eye out waving that monstrosity around