HF Field Radios  and Battery Operation – Quick Notes

HF Field Radios  and Battery Operation – Quick Notes

 

All radios are classified as 12 V but are actually specified to be at 13.8 Volts.

 

If you use an SLA that is 12V then current drain and voltage drop will pull the voltage lower and they radio will turn itself off. Thus, it is better to use a Lipo or Life4 battery rated at 13.2 volts.

 

I operate a man pack RF power of 20 watts. It has lower current drain and is only about 1 S unit lower than a typical 80-100 watt station.

 

Running a HF 100 watt radio at 20 watts may still draw about 8 Amps of power due to internal circuitry optimized for high power not lower power.

 

Operating CW or 2m FM will cause the current drain to be constant where on SSB it will fluctuate with the voice wave.

 

Thus a 5-10A SLA will prove a poor choice and limit operation greatly.

 

A 10A 13.2v Bioenno battery will prove better in operating time and be lighter as well.

 

The Xiegu G90 is designed as a 20 watt radio and will draw about 4-5 Amps.

 

The Icom 705 with its 1800 MaH BP-272 battery supports operating at 10 Watts

 

BUY A PROPER LIPO OR LIFE4 BATTERY AND THROW THE SLA’S IN THE RECYLER BIN

One comment

  1. ve7fky · 13 Days Ago

    Reblogged this on VE7FKY’S Blog.

    Like

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s