Flyboy30126
Member
Hi, I have another question. My TYT TH 7800 screen goes off the comes back when I release the PTT button. Is this normal? I bought a PYRAMID PS3KX just for the radio. THANKS, Glad I joined RR!
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Tytera TYT TH7800 power supply
- Thread starter Flyboy30126
- Start date
That model power supply does not have the current capacity to run that radio in transmit. You need a beefier supply.
Flyboy30126
Member
That's good to know, they recommended a 13.8v that's why I bought it. I have a engindot ps that goes up to 20+ (I think). Also, I don't have a ham license yet so all I want to do is receive. Thank You for your reply
rf_patriot200
Active Member
Nothing less than 20 amps should be used, because it'll easily draw 10-12 amps on transmit.
mmckenna
I ♥ Ø
13.8 volts is the voltage the radio wants to see. The power supply you have can provide that. What it can't do is supply enough current to keep the radio powered up when it's transmitting.
If you don't have a ham license, then you shouldn't be transmitting. The 3 amp power supply should work fine for receive only if you can avoid the temptation to key up.
When you get your ham license, then you'll want something that is suitable for driving the radio. Without knowing exactly what model "enginedot" you have, it would be hard to advise.
15 amps should be more than enough for a mobile ham radio like that. More capacity won't hurt, especially if you intend on adding more radios once you get your ham license.
