[Elecraft] Minicircuits splitter for diversity?

[Edward R Cole]

I looked at the link and opened the Data Sheet.
Splitter loss goes from about 3.2 to 4.0 dB in each arm (if 
terminated) depending on frequency.  Assuming use only on HF up to 
30-MHz, 3.2 dB.  Isolation of ports is above 25.99 dB which should 
not result in any crosstalk problems (more an issue if used for 
transmit).  Limited to 1w max.  Fine for receive.

But why would you connect both Rx to a single antenna?  You can use 
both Rx on ANT1 without a splitter.

Diversity implies two separate signal sources (two antenna).   I do 
dual polarity Rx on 144-MHz EME by feeding output of the horizontal 
antenna to sub-Rx and vertical antenna to main Rx (via a two receiver 
transverter).  Special sw processes these two signal after SDR 
conversion to IQ baseband and converted by four input soundcard to 
digital.  The software both decodes the digital signal (JT65B) and 
resolves the actual polarity angle of the received signal to one 
degree.  If grid square info of station worked is input it also 
recommends which polarity (Horz or Vert) to use for transmit.  Much 
more is involved but only germane to those doing eme.
http://www.kl7uw.com/MAP65.htm

I guess if you want two Rx to see the same antenna it would be a good 
use, but that does not involve diversity mode.

73, Ed - KL7UW

Date: Mon, 6 Nov 2017 08:13:08 -0500
From: Jim Miller <jim at jtmiller.com>
To: Elecraft Reflector <elecraft at mailman.qth.net>
Subject: [Elecraft] Minicircuits splitter for diversity?
Message-ID:
         <CACYeN9wwWCHepsfWZJEMME0K=ANwPKLucdgiBi+njmC6XmjR5g at mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

I'm looking at this splitter to set up diversity for my K3s. It will only
be connected to RX paths.

https://www.minicircuits.com/WebStore/dashboard.html?model=ZSC-2-1BR%2B

It goes down to 100Khz and up to 400Mhz.

BNC connections and a rear bracket make it fit well with my setup.

Anyone see a problem with it?

Price seems reasonable for something built with a nice metal case, BNCs and
quality.

Suggestions?

73

jim ab3cv


73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com