Running a 12V VHF Radio off a 24V system?

[goboatingnow]

Originally Posted by smac999

Since the vhf is one of the most important things in the boat. You certainly don’t use that cheap crap.



Look at the victron Orion 24-12. More then 10a.



If you plan on adding more 12v stuff later. Maybe grab something bigger like the 30a.

Simple buy three and vhf isn’t that important I mean I carry two handhelds as well

[goboatingnow]

Originally Posted by mako

How about install two VHF radios in series?

No , no

[coopec43]

Originally Posted by Wotname

Or you could simply use a 24V VHF radio.
IIRC, Icom, Sailor, Furuno, all make 24V VHF radios and maybe JRC and SEA do as well.

Uhmmmm? The last time I researched there didn't appear to be any 24V on the market and an article I read seemed to confirm that.

The Icoms that I've looked at (just now) are 13V. BUT I'll keep looking.....

[Pizzazz]

If it is only for the VHF radio, you can just t-off the first battery to get 12V. These radios do not use much power and will not affect your battery balance much.

However, over time you would want to build a 12V circuit for your 24V boat. For that you would want to get a good quality buck converter, rated at 20A or 30A. Examples of loads are CD radio's, some electronics, 12V-USB charging sockets, 12V fans (much cheaper) and some lights (12V led lights are significantly cheaper).

[coopec43]

Originally Posted by Wotname

Or you could simply use a 24V VHF radio.
IIRC, Icom, Sailor, Furuno, all make 24V VHF radios and maybe JRC and SEA do as well.

Could you please give me a couple of links to 24V units?

(I googled "sailor vhf radio 24 volts" and got plenty of 12V Sailor radios working off 24V)

[Uncle Bob]

Originally Posted by Wotname

Or you could simply use a 24V VHF radio.
IIRC, Icom, Sailor, Furuno, all make 24V VHF radios and maybe JRC and SEA do as well.

Mate, cease with the logic,OK.

[coopec43]

Originally Posted by Uncle Bob

Mate, cease with the logic,OK.

So easy!

Can you give me links to VHF radios that work on 24V input (Not 12V units working off 24V)

Your time starts now...........

[Wotname]

Originally Posted by coopec43

Could you please give me a couple of links to 24V units?

(I googled "sailor vhf radio 24 volts" and got plenty of 12V Sailor radios working off 24V)

Furuno FM-8900S FM-8900 includes class A DSC and ATIS and others neat features.
https://www.furuno.com/files/Brochur...FM-8900S_E.pdf
https://www.bme.net.au/shop/marine-e...8aAvhYEALw_wcB

If I get a chance, I'll have a look for Icom or Sailor tomorrow.

[Wotname]

Originally Posted by coopec43

Uhmmmm? The last time I researched there didn't appear to be any 24V on the market and an article I read seemed to confirm that.

The Icoms that I've looked at (just now) are 13V. BUT I'll keep looking.....

Icom GM600. You have to specify 12V or 24V when you order. The 12V version includes the PS-310 #02 and the 24V version includes the PS-310 #01.

https://www.icom-australia.com/produ...0_Brochure.pdf
https://www.theboatwarehouse.com.au/...h-class-a-dsc/

[coopec43]

Here we go! (For ships)

Marine radio - STR-6000D - for ships / VHF / with DSC

https://www.nauticexpo.com › ... › Boat radio

... of the information about the Navis USA LLC product: marine radio STR-6000D. ... Audio 1.5A max • Power Supply : DC 24V (DC 18 ~ 31.2V) ▷ TRANSMITTER ...


▶ GENERALS

• TX Frequency : 156.025~157.425MHz

• RX Frequency : 156.050~163.275MHz

• Communication Mode : Simplex and Semi-Duplex

• Channel Number : 178 channels (ITU 55, USA 53, CAN 60, WEA 10)
• Type of Emission : FM(16K0G3E), DSC(16K0G2B)

• Freq. Stability : ±10 ppm(-20℃ ~ +60℃)

• Antenna Impedance : 50Ω

• Consumed Currency (13.6V) : TX high 6A max Max. Audio 1.5A max

• Power Supply : DC 24V (DC 18 ~ 31.2V)

[Wotname]

Samyung STR-6000D
https://www.samyungenc.com/eng/view....9&bunryuSeq=17
https://www.nauticexpo.com/prod/navi...04-206166.html

Not sure where you could buy this Oz though!

Cross posted

[coopec43]

Originally Posted by Wotname

Icom GM600. You have to specify 12V or 24V when you order. The 12V version includes the PS-310 #02 and the 24V version includes the PS-310 #01.

https://www.icom-australia.com/produ...0_Brochure.pdf
https://www.theboatwarehouse.com.au/...h-class-a-dsc/

So they are both 12V VHF Radios? The "24V VHF" is in fact a 12V radio with a 24V to 12V "reducer"? (I don't want that)

[coopec43]

Originally Posted by Wotname

Samyung STR-6000D
https://www.samyungenc.com/eng/view....9&bunryuSeq=17
https://www.nauticexpo.com/prod/navi...04-206166.html

Not sure where you could buy this Oz though!

Cross posted

Probably just as well I can't buy it in Australia (It would break my bank)

[Wotname]

Originally Posted by coopec43

So they are both 12V VHF Radios? The "24V VHF" is in fact a 12V radio with a 24V to 12V "reducer"? (I don't want that)

No.

The GM600 comes with either power supply. The unit itself requires exactly 13.8V.

If you want to operate it on a nominal 12V system, it comes with the PS-310 #02 supply which allows it operate on anything between 10.8V and 15.6V.
If you want to operate it on a nominal 24V system, it comes with the PS-310 #01 supply which allows it to operate on anything between 21.6V and 31.2V

You can't buy it without either the PS-310 #01 or the PS-310 #02.

It is a professional fully compliant GMDSS radio. The specs are much tighter than any run of the mill recreational marine radio and Icom has elected to to provide seperate power supplies in order to meet the GMDSS requirements.

To be honest, I think the 24V Furuno FM-8900S is possibly a better design but they both meet the GMDSS specs.

[coopec43]

Originally Posted by s/v Jedi

Get a sealed unit like this 20A: https://www.amazon.com/gp/product/B09GXXQZ6P

Edit: I tested these, they are the bees knees for these applications

I think what Jedi (and others) have suggested is the way to go. I would go for a 30A version @ $28 though.