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[Not possible] Extend receiver band
Posted: Sat Apr 03, 2021 10:55 pm
by PY2GVY
Is it possible to low the UHF band to 350MHz ? We have a lot of services here from 350MHz to 380MHz.
TNX.
[Not possible] Re:Extend receiver band
Posted: Sat Apr 03, 2021 11:27 pm
by VK3KYY
We tried this, but the receiver does not work reliably below 380Mhz
Some radios would operate at perhaps 375Mhz but only a few radios.
The actual spec on the RF chip is 400Mhz to 520Mhz. But we found all radios work from 380Mhz to 564Mhz.
Re: [Not possible] Extend receiver band
Posted: Sun Apr 04, 2021 7:00 am
by OM8AMV
And VHF extend band is from to ?
Re: [Not possible] Extend receiver band
Posted: Sun Apr 04, 2021 7:13 am
by VK3KYY
Official values for VHF / 220Mhz / UHF are
{
.minFreq=13400000,
.maxFreq=17400000
},// VHF
{
.minFreq=20000000,
.maxFreq=26000000
},// 220Mhz
{
.minFreq=40000000,
.maxFreq=52000000
}// UHF
Range that all radios seem to support , hence the firmware allows
{
.minFreq=12700000,
.maxFreq=17800000
},// VHF
{
.minFreq=19000000,
.maxFreq=28200000
},// 220Mhz
{
.minFreq=38000000,
.maxFreq=56400000
}// UHF