Your Kiwi must be running the v1.690 (or later) release to use the proxy service and be in the public Kiwi list (rx.kiwisdr.com, map.kiwisdr.com)

Please visit kiwisdr.com (documentation) and kiwisdr.nz (online store)

Multiple Kiwis, single GPS antenna?

Those that are running multiple Kiwis at a location and that are using a single GPS antenna, what have you found to be a good method of doing this, preferably without being overly expensive?

Is it possible in the Kiwi configuration to disable the Bias-T power on the GPS antenna connection?

If not, I know I'll have to ensure that only one of the Kiwis is providing power up the feeding coax to the GPS antenna.

Comments

  • I don't like touching a soldering iron to my kiwi or BB so got some DC blocks from eBay. But, I'll DIY my next ones. A 15 or 18 pF series cap would work. I don't think the kiwi cares about antenna sensing, so that simple cap should suffice.
    cathalferris
  • edited April 2020
    For over a year, at KPH I have fed 7 Kiwis from one GPS antenna on the roof: GPS Puck ====> 30M RG-6u =====> $15 passive splitter =====> 7 Kiwis
    The 8-way I used is no longer offered, but I have installed this 6 way at other sites: https://smile.amazon.com/gp/product/B01KCY5MBU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
    No mods are required on the Kiwis
    I started with the Kiwi's GPS puck on the roof into this system and that worked fine, but replaced the puck with a 45 dB gain 'bullit' GPS antenna which I bought as a precaution against the losses
    The 100' RG8 measured 8 dB loss at 1500 MHz and the splitter introduces 11 dB, but the rooftop location more than compensates for those losses



    cathalferris
  • Is that view through a hatch in the top of the "little blue rack"? Love it.
  • Yes, that is the LBR. You donated one of those 7 Kiwis.
    It is good that I haven't needed to touch it for months, since now I can't get access until the quarantine is lifted.
    The Pi4 running wsdprdaemon is on a lower shelf.
  • Just Sayin'
    £12.05 - limit on shares probably 10+ (I've only used it for 5)



    Don't judge the wallpaper, the room is my SDR/workshop.
  • I probably saw that rack during one of the tours I took during the late '80s. Little did I know, lol.

    The place is magical. Not only for the radio history and legendary noise floor but for the incomparable beauty of those 70k acres and that spectacular coastline. I lived about an hour away for 15 years. I got married out there once. I have over 100 solo hikes done at certain times of the year when the tide was especially low (> -1 foot @ sunrise/sunset). This opens up certain areas of the coastline, for a very short time, that are normally inaccessible. I still have the maps and 5 diaries crammed full of notes about those trips. Good times..
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