Yaesu ft 891 portable on 12v

[KD2GOE]

Any one run the Yaesu ft 891 on a lead acid battery for portable I have a big deep cycle But I want to know how the radio behaves when the voltage sags down to 11.5v i know a lot of the radios are more happy at 13.8 I have seen and had some radios just not like running at 12v they start acting funky ¯\_(ツ)_/¯


My end game is to use a some thing from bioennopower like a 12V, 12Ah LFP Battery and switch betwen two of them.

 

[Rwb]

I think its not a great idea,seems like when you took your test its in the questions

 

[Road Squawker]

13.8vdc +/- 10 %

 

[Riverman]

13.8vdc +/- 10 %

13.8 +/- 15%

https://www.yaesu.com/airband/index...02&encProdID=DF4DB262968932E999EAF928B5B6A1A7

 

[Road Squawker]

yeah,... I fumble fingered it

 

[KD2GOE]

i know about the 13.8 +/- 15% on the paper work what i am asking is real life use things are not always the same as whats on paper.
it tells you that it draws 2 amps on RX the tests people have done show 1 amp
i was asking for real world not what was on the paper work...
well i ordered the FT-891 it will be here in a few days...

maybe next year or 2 ill oder the bioennopower like a 12V, 20Ah after i save up..

https://www.bioennopower.com/products/12v-20ah-lfp-battery-pvc-blf-1220a people are saying they work grate and there useing them on that radio..

 

[Captain Kilowatt]

i know about the 13.8 +/- 15% on the paper work what i am asking is real life use things are not always the same as whats on paper.
it tells you that it draws 2 amps on RX the tests people have done show 1 amp
i was asking for real world not what was on the paper work...
well i ordered the FT-891 it will be here in a few days...

maybe next year or 2 ill oder the bioennopower like a 12V, 20Ah after i save up..

https://www.bioennopower.com/products/12v-20ah-lfp-battery-pvc-blf-1220a people are saying they work grate and there useing them on that radio..

Those current specs are typically worst case conditions and for the RX are typically done at 100% modulation and full output from the speaker which will tend to increase figures to pretty near spec however nobody generally runs the volume wide open at that level.

 

[BJ radionut]

http://www.westmountainradio.com/product_info.php?products_id=battery-boost&navcode=/fpBoost

When the voltage from a battery drops, the Super Booster brings it up to a level that allows for optimal transmit. The output level can be set by a trimmer pot to any value up to 15V. The advantage of using the Super Booster is that a Lead Acid battery is rated in Amp-Hours for use down to 10.5V. However, radios require at least 11.7V to transmit. That results in over one-third of amp-hours in the battery that cannot be used for transmitting without a booster.

 

[KD2GOE]

Radio run Fine has good Side band audio out down to 11Volts with a drop in power.