开云体育

On Thu, 07 Nov 2024 16:02:23 -0800, "Dennis via groups.io"
<spike.dennis@...> wrote:

I did download the Baofeng software. It does work. But it's horrible! You must input every cell's information manually. No copy/paste capability, no importing of data. Imagine programming 999 channels one at a time! No thanks.

I would still think that entering the information in their program
would be easier than entering the same information from the front
panel of the radio. Still, though, I would think that the company
behind the radio would offer a much better program to work with the
radio.


Donald KX8K



----------------------------------------------------------------
There's no place like 192.168.0.1
----------------------------------------------------------------
Some ham radio groups you may be interested in:
/g/ICOM /g/Ham-Antennas
/g/HamRadioHelp /g/Baofeng

On Fri, 8 Nov 2024 01:31:16 +0200, "Costin R"
<electronice.az@...> wrote:

Your answer seems a bit harsh to me.

I have to agree here. Walt was just offering another way of doing
things.

I wanted to respond and remind members here to be grateful when people
try to help, even if they don't really reply directly to the original
question. If a member steps over the line and insults or berates
another member, we'll either put that member on moderation or remove
him or her from the group. We do try to allow for free speech as long
as it doesn't adversely affect others.

Donald KX8K
group owner/moderator



----------------------------------------------------------------
There's no place like 192.168.0.1
----------------------------------------------------------------
Some ham radio groups you may be interested in:
/g/ICOM /g/Ham-Antennas
/g/HamRadioHelp /g/Baofeng

On Fri, 8 Nov 2024 01:31:16 +0200, "Costin R"
<electronice.az@...> wrote:

I don't think it will exceed 150mA, so I would install a 7810 stabilizer (10V/1A) in the cigarette lighter socket on the wire. At such a low current, it does not need a cooler. On the input and output, mount a 100nF/50V capacitor in front of the negative terminal.

I think he's not wanting to use the cigarette lighter socket, but the
same would apply to the line from 12V PowerPole connectors to the
charger. Apparently, this could be put in a small box, or maybe built
into the charger base?

Donald KX8K



----------------------------------------------------------------
There's no place like 192.168.0.1
----------------------------------------------------------------
Some ham radio groups you may be interested in:
/g/ICOM /g/Ham-Antennas
/g/HamRadioHelp /g/Baofeng

On Thu, 07 Nov 2024 13:59:49 -0800, "billsf9c via groups.io"
<OOWONBS@...> wrote:

2 diodes would drop ~1.4 v. 1N400x series just handles an amp but there is a 3A version. Axial lead. Fit inside or in the cord line itself.or make a short adaptor.

Michael,

Are you up to making a modification such as this? If so, I would
suggest adding the diodes in the +12V line coming from the car's 12V
system. That way you leave the charger unmodified, and your AC adapter
also will still work as designed.

My approach would be to use the 12V to 10V adapters you have now and
just add PowerPoles to the wiring. I don't know how well Baofeng
designed the charger so we don't know how much of a variance in
voltage that the circuit allows for it to still run within both safe
limits and also still charge the battery. If you want to modify the
charger or adapter, then you can consider the following but realize
that you may run the risk of damaging your charger or possible fire.
If you do any modification, I would extensively test the mod out
without leaving it connected when you aren't present to validate that
it will be OK.

With the previous caveat, here's what I might do if it were mine and I
wanted to do what you would like to do with the charger . . .

I would use 3, 4, or even 5 diodes though since the car will have
13.8V when the engine's battery charging system is operating. Silicon
diodes have about a 0.7V drop across them in a circuit. Three would
drop about 2.1V and four would drop about 2.8V, while 5 would drop
3.5V.

If your drop in charger has voltage regulation and isn't just a
trickle charger, a little higher than the 10V spec should be fine. Too
low and it just won't charge. Too high and you may run the risk of a
fire, though I would expect the charging circuit to regulate the
voltage somewhat.

Four diodes would then provide about 11 volts. A fifth would provide
10.3 volts, which would be a safer bet, but it probably won't charge
if the ignition is off because 12.6V (battery voltage without car
running) minus the 3.5V drop of 5 diodes leaves you with only 9.1
volts, probably too low to charge your HT when the car isn't running.

I feel 5 diodes would be safer, as long as the HT takes a charge with
5 in the +12V supply line. Use regular silicon diodes (not the
Schottky type, which has a lower voltage drop) that can handle double
the current requirement of the power adapter for a safety margin. If
your adapter is rated at 1.5A, use 3A or better diodes.

If you can get a schematic of the charger, it might tell you more
about how large of a variance in voltage it can deal with.

You can "fold" the diodes end over end as long as you don't short any
wiring, using spaghetti tubing to cover exposed wires and then some
heat shrink tubing over everything to make it a neat package.

You could breadboard the setup and run it on a 13.8V DC supply and see
if it gets hot, and if it charges the HT correctly. If things get hot
on an open breadboard setup, they would only get hotter if they were
packed together tightly with shrink wrap tuning.

You may feel there's too much to risk here and just use the 10V
adapters you have, but wire the adapter with PowerPoles instead of a
cigarette lighter plug.


Donald KX8K



----------------------------------------------------------------
There's no place like 192.168.0.1
----------------------------------------------------------------
Some ham radio groups you may be interested in:
/g/ICOM /g/Ham-Antennas
/g/HamRadioHelp /g/Baofeng

Walt,

Your answer has absolutely nothing to do with my question.

My question concerns running a Baofeng drop in desk charger from 12V. I
see no correlation whatsoever between your answer and my question.

Michael WA7SKG



Walt WA7SDY via groups.io wrote on 11/5/24 8:01 PM: