Re: Secondary antenna switch needed
- Hi Jim,
I got the Network PCB in the mail today - Thanks much. I cannot seem to find the cutting template for the enclosure that you refer to in the Network Manual. Do I download it from somewhere?
Thanks again & 73,
Sebastian - NS0W
--- In firstname.lastname@example.org, "Jim Garland" <4cx250b@...> wrote:
> Hi Sebastian,
> Sorry to take so long responding to your inquiry, but I was in WDC over the
> holidays visiting my son and his family. My visit coincided with the
> nightmarish storm which pounded the eastern seaboard, and we were without
> power for several days.
> I don't see any reason why your switching idea wouldn't work fine. I'll
> drop a network PCB in the mail for you (no charge). Let me know how the
> arrangement works out.
> Jim W8ZR
> From: email@example.com [mailto:firstname.lastname@example.org] On
> Behalf Of kc0cqq
> Sent: Monday, July 02, 2012 10:45 PM
> To: email@example.com
> Subject: [stationpro] Secondary antenna switch needed
> I briefly discussed this problem with you in Dayton in 2011 but at that time
> I have not quite thought the problem through. I am only getting to
> implementing my StationPro II now. Here is the problem again:
> I use a SDR-IQ as a panadapter in a somewhat unconventional way on my
> radios. The SDR-IQ is fed from an antenna splitter on the RX only line on
> all 3 radios. This means I need a second RF switch unit in parallel without
> the amplifier switching part that will switch the SDR-IQ input to each of
> the radios. Initially I planned to implement this by means of an Ethernet
> splitter that takes the RF unit control signals to a home brew board with 3
> relays that drives a 3-way 24V coax relay (which I happen to have) - then I
> noticed the StationPro "networking unit" that will actually do what I want
> to do without having to mess with 24V.
> There are a couple of outstanding questions:
> 1. Will the Ethernet cable and circuitry handle 2 units in parallel. I think
> the relays pull about 35mA - so we are talking about 70mA which sounds
> reasonable to me.
> 2. I will obviously have to make a RJ-45 to RJ-25 interface cable. I already
> have a commercial Ethernet splitter that just plugs in - so no mods or fancy
> Y-cables needed.
> 3. I guess I will have to ask Harbach how much they will charge for a
> networking unit since I do not "qualify" through the normal channels.
> Any reason why this would not work or any better ideas?
> 73 de NS0W
Oops, sorry Sebastian. I forget that it was a separate document from the instruction sheets. I’ve attached it to this email.