The GPS supplied with WS-21707 works fine.
The problem for me the cable is too long for my application so I ordered the GPS-00177.
I cant seem to get a GPS signal from that GPS.
Any Ideas please ? Specs look the same especially frequency etc etc.
Thanks
Matt
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Just for a quick check have a look at the sma connectors feom both antennas, do the look 100% the same, eg does one have a pin and the other one not?
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Yes 100% GPS is a male and the SIM is a female so coinnection is good.
Thanks
Matt
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The reason i ask is there are 4 sma connector types not just two.
The 2nd antenna states it has a lna which implies it needs power. As such if the gps unit is not providing the needed power it may not work.
Note, I’m just having an educated guess from a very quick read of the specs on my phone, so may be missing something.
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Does the original antenna have a part number printed on it?
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Hey, no it just states the frequency which is 1575.42MHz and that’s the same as the one just supplied when you check the specs.
Regards
Matt
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Cheers. I think wait for one of the core guys to have a look.
To me it looks like the new antenna is active which needs power, but the original is passive and does not need power.
As such unless there is a way to turn on power to the antenna, you may need to find a different one.
Anyway lets see what the experts say.
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Hi Matthew,
From a bit of digging it looks like the antenna included with the WS-21707 ( SIM7600G-H M.2 4G HAT for Raspberry Pi includes a passive antenna, though from the schematic there is a biasing circuit for (something? Good catch Michael!) similar to that of the Sparkfun unit. 
Might be worth an email?
EDIT:
I think the biasing circuitry is not populated on your version of the HAT:
From (your one) SIM7600G-H M.2 4G HAT for Raspberry Pi, LTE CAT4 High Speed, 4G/3G/2G, GNSS, Global Band | Buy in Australia | WS-21707 | Core Electronics :
From https://core-electronics.com.au/waveshare-4g-hat-for-raspberry-pi-lte-cat-4-4g-3g-2g-gnss.html:
But annoyingly both use the same schematic, a fun bit of sleuthing!
In short, Michael is right (if that area in red isn’t populated on your board)
In short a passive antenna will work: https://core-electronics.com.au/catalogsearch/result/?q=ADA2461%20ADA2460%20
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