Skylark
Well-Known Member
I’ve not needed to update my Baafeng for a few years but I recall that CHIRP had several templates available to use. Minor mods only required to suit my needs (which are Marine VHF, 2m and 70cm).
Last time I measured the output of a Baofeng, it was horrid. Poor RF filtering and visible harmonics to about the 10th. Probably the reason they aren't type approved for Marine VHF.
I have a SH 270X. I don't use it a lot as I sail small boats. But, it has very good battery life and came with the tray for AAA batteries. Submersible, but doubt it floats. Bought it on the US, so not technically legal, but the French do not seem fussed about HHs as they consider them safety kit.
Since the built in batteries are so good, I have yet to try the AAA tray. But, it is 6 or so, not 3? Bought on a trip to the family patch on the Chesapeake from West Marine. Maybe 15 yrs or more ago..I have the 3 AAA battery tray for my SH and it only transmits on low power with the tray. I suspect its because I use rechargeables so the voltage is a bit low but it's very frustrating.
On the hx870 it's automatically switched to low power, even with alkalines at 1.5v.I have the 3 AAA battery tray for my SH and it only transmits on low power with the tray. I suspect its because I use rechargeables so the voltage is a bit low but it's very frustrating.
On the hx870 it's automatically switched to low power, even with alkalines at 1.5v.
But, it is 6 or so, not 3?
Rechargables actually have less voltage drop than alkalines .... so even though dry-cells show 1.5v - in use they often drop to same or less than a NiMh ... and of course the NiMh will hold that voltage far longer while the drycell has a steady decline from start ...I have the 3 AAA battery tray for my SH and it only transmits on low power with the tray. I suspect its because I use rechargeables so the voltage is a bit low but it's very frustrating.
For anybody the least bit interested, the ICOM M25 handhelds listed on Aliexpress etc for around £60.00 do appear to be kosher .
Takes around 2 weeks to arrive.
However they are not to the UK spec. ie the marina channel will not function.
If you just want to use the other channels it will do the job.

The moka pot in the bilge would have been the real disaster
I've just had a look at my notes, there were issues with harmonics on Tx, but also the Rx performance is poor - signals readable on a Standard Horizon were lost in the noise on the Baofeng.It's not that. Or at least it's not just that. It's not type approved, it's programmable and would never pass the environmental EN 60945 stuff. So compliance is a nonstarter for many reasons long before considering the output. And it's not legal for PMR because it's slightly over power and has a removable Antenna.
An RF engineer colleague tested his and his had excellent harmonic suppression and very low spurious emissions. There are tests all over the Internet and it always seems pretty well regarded. A lot of enthusiasts seem to buy them.
I'd be really interested in seeing an online test on a spectrum analyser that showed a bad one. When I was considering buying mine I couldn't find one.
I've just had a look at my notes, there were issues with harmonics on Tx, but also the Rx performance is poor - signals readable on a Standard Horizon were lost in the noise on the Baofeng.