Signal Splitting?

Discuss commercial and home made antennas.
Username
Posts: 505
Joined: Sun Oct 09, 2016 7:27 am

Re: Signal Splitting?

Post by Username » Mon Aug 19, 2019 11:06 am

which you're want to use.
all 4?! :roll:

radiolistener
Posts: 58
Joined: Thu Jan 25, 2018 10:48 pm

Re: Signal Splitting?

Post by radiolistener » Mon Aug 26, 2019 6:38 pm

you cannot use one antenna for 4 divices simultaneously with no loss, because signal strength will be divided by 4.

You can use 10-20 dB LNA amplifier before splitter in order to fix it, but amplifier will add IMD distortions.

So, the only way to use it with no loss and no distortions is to use antenna switch to connect just one device at a time.

Username
Posts: 505
Joined: Sun Oct 09, 2016 7:27 am

Re: Signal Splitting?

Post by Username » Mon Aug 26, 2019 7:36 pm

Again I need to use multible SDR for all the Decoder Software.
Sure I need an LNA. But which Company for the Splitter is recommend?

snn47
Posts: 192
Joined: Tue Dec 27, 2016 11:00 pm

Re: Signal Splitting?

Post by snn47 » Thu Sep 05, 2019 6:19 pm

Since you want to buy how about trying SAT-TV splitter e.g. http://www.schwaiger.de/en/4-way-distributor-12-db.html these cover VHF?

Comercial splitter combiner are more expensive and price increase with power handling capacity. Another option are directional couplers for providing additional outputs, unforunately coupling loss starts at about 12 dB per port.

Instead of looking for 4 way splitter combiner you can also connect a pair of 2 way splitter/combiner to the outputs of a third 2 way splitter/combiner to form a 4 way output.

There are many manufacturers e.g. http://ww2.minicircuits.com/WebStore/Splitters.html or Spinner-group.com but you have to check for loacal availability at distributors.

Some background on combiner and coupler can be found here
https://www.microwaves101.com/encyclope ... -splitters and here
https://www.minicircuits.com/app/AN10-006.pdf

Username
Posts: 505
Joined: Sun Oct 09, 2016 7:27 am

Re: Signal Splitting?

Post by Username » Thu Sep 05, 2019 6:31 pm

URL-Adresse: http://ww2.minicircuits.com/WebStore/Splitters.html

Fehlermeldung: (10061) WSAECONNREFUSED, Connection refused.
[unknown]
Well I will send then an E-Mail.
What is the price for such splitter?
The cheap are just a bigger T who isnt good.

snn47
Posts: 192
Joined: Tue Dec 27, 2016 11:00 pm

Re: Signal Splitting?

Post by snn47 » Fri Sep 06, 2019 10:19 am

I just tried and the link works.

I don' know if Minicircuits does mailorder, if not you You have to locate and contact a distributor for prices.

hotpaw2
Posts: 109
Joined: Sat Jan 14, 2017 11:07 pm
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Re: Signal Splitting?

Post by hotpaw2 » Fri Sep 06, 2019 3:43 pm

For what bands or frequencies? For HF, QRPGuys sells an active splitter kit that buffers and amplifies multiple outputs. I ordered one, but haven't assembled or tested it yet.

Username
Posts: 505
Joined: Sun Oct 09, 2016 7:27 am

Re: Signal Splitting?

Post by Username » Fri Sep 06, 2019 3:56 pm

I have just an VHF Antenna Outside.
The are capable of receive for example the Wether Sat the are not perfect but good enough for Testing.

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