Can a 100W shortwave radio be powered by a current 100W gallium nitride charger plus a PD-enabled cable?

BI7ALG

目前论坛讨论短波电台供电方案，基本都是建议使用二手服务器电源改装成13.8V来满足供电需求，想知道是否可以使用100W的PD诱骗线供电，因为手上有好几个100w的快充氮化镓充电器，如果可以实现给短波电台，似乎就没有必要用二手服务器电源改装，而且在野外架台时，还能跟户外电源搭配使用，氮化镓的充电器体积更小巧。

目前计划持有机器：IC-7300

BG2EWI

BI7ALG The transmitting power and power consumption of a radio are not the same thing, because the efficiency of RF amplifiers is very low. Therefore, the actual power consumption is approximately equal to the transmitting power multiplied by 3. Using this rough calculation to select a power supply is a safe approach.

Yuluoxk

First, you need to know that 100W refers to radio frequency power, not electrical power.
For specific power calculations, please refer to the radio's instruction manual, which details the working current. The typical operating voltage multiplied by the current equals the radio's power consumption.
Regarding the IC-7300 mentioned in this post, based on my experience, the working current is approximately 24A, which translates to 13.8 * 24 = 331 watts. A 100W charger would definitely not be sufficient.
Then, using a charger to power the radio is feasible. The G90S/778UV I have are powered by Cool State 10 energy pillars. They can output 100Wpd and use a lure module to generate 20Vpd, then DCDC down to 13.8V, which is connected to the radio.

BI1LWR

Yuluoxk
My plan is similar to yours.
However, I'm using a 15V lure line, and I don't need a DC-DC converter. It's perfect, and I can also achieve slightly higher transmission power.

BG2ELG

If there isn't enough power, a typical 100W amplifier needs at least 20A to operate at full power.

BI4PMQ

The current draw must be limited to 2-3A, for example, according to the FTDX10 manual, a standard 13.8V transmitter drawing 23A requires over 300 watts.

BG2EFX

The 705 solution can generate 12V 3A. The 705 is sufficient.
7300. For a 100W power supply, you'll need around 18A. Then you can check which PD (Power Delivery) charger can output 12V and 18A.

BG6QFO

A QRP radio station can work; a 100-watt radio station likely needs to use only 30 watts for transmission.

Bi4KKF

The Q900 from Guohe, a type of QRP radio, can

BG8LGP

I looked at my electric car's charging station and had a bold idea.🤔

BloodBlade

I recently saw a blog post by a Japanese ham radio operator where he documented using the PPS protocol to directly request a USB power output of 13.8V. However, the results showed that a wall outlet was sufficient, but the current from a portable power bank was not enough (He only tested QRP equipment, but it's unlikely that high-power devices would work).

BI7ALG

After reviewing the responses, most people indicated that there would be problems. Is it possible to limit the radio power to 25W or less?

BG2EWI

BI7ALG Theoretically, as long as the actual discharge current does not exceed the maximum current that the charger can provide, it should work.

BG2EFX

BI7ALG
Even a small solar panel can consume a significant amount of power when idle.
For example, as mentioned above, using DX10 generally reaches the upper limit of PD12V even in standby mode for receiving. Therefore, a QRP radio is still preferable.

unsignedchar

The power output of a 100W radio transmitter typically requires around 20A, which means the power supply would need to be approximately 300W.

[已注销]

It's clearly too heavy to carry around, so I could get someone to build a 15Ah lithium-iron phosphate battery with four series of lithium batteries. It should be fine for half a day.

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