Duplex Hotspot Anomalies (N5BOC)

MMDVM_HS Hat hardware
kb2ear
Posts: 7
Joined: Sun Mar 10, 2019 5:47 pm

Re: Duplex Hotspot Anomalies (N5BOC)

Post by kb2ear » Mon Jun 08, 2020 8:11 pm

These setting appear to make the duplex hotspots around 99.9% There is still the occasional miss but nowhere near the way it was before.

oh5bzr
Posts: 22
Joined: Tue May 19, 2020 12:43 pm

Re: Duplex Hotspot Anomalies (N5BOC)

Post by oh5bzr » Tue Jun 30, 2020 2:24 pm

So duplex means two radios ?
There is two RX and TX offsets,... but is only the the first two TX abd RX offset that is used to get dupplex working,.. I got TX value 925 and rx 50 .

??

G8SEZ
Posts: 139
Joined: Fri Apr 13, 2018 8:26 pm

Re: Duplex Hotspot Anomalies (N5BOC)

Post by G8SEZ » Tue Jun 30, 2020 2:36 pm

oh5bzr wrote:
Tue Jun 30, 2020 2:24 pm
So duplex means two radios ?
There is two RX and TX offsets,... but is only the the first two TX abd RX offset that is used to get dupplex working,.. I got TX value 925 and rx 50 .

??
Both ADF7021 radio chips are supplied by the same clock source, so any frequency offsets *should* be the same.
--

Brian G8SEZ

oh5bzr
Posts: 22
Joined: Tue May 19, 2020 12:43 pm

Re: Duplex Hotspot Anomalies (N5BOC)

Post by oh5bzr » Tue Jun 30, 2020 6:41 pm

ok,..., I added 10cm coax cable for tranmitting antenna put it vertically,
BER is now under 1% before it connection happened randomly if at all.

What kind of antenna arragments you have used ?

How about 9W power amplifier, can you get reasonable whit few bugs ?

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