# Tag Info

### Are there any cons of running shack on battery?

I don't mean to talk you out of the idea, but I suspect the advantages are not nearly so great as you imagine. Cheaper than a dedicated RF-grade power supply (USD30 for 40 Ah car battery) I don't ...
• 49.8k

### Coax braid acting as power supply ground between radio and amplifier connected to the same supply, is this a problem?

If I understand the description correctly: simulate this circuit – Schematic created using CircuitLab If that's all it is, I wouldn't say it's any big deal. Whenever you have multiple paths to ...
• 49.8k

### What advantages does SLA have over a Lithium chemistry battery for a Go Box?

SLA cells are dead easy to recharge, improvising a charger may be as easy as a set of jumper cables. Lithium ion's require active charging circuitry and the failure mode can be catastrophic. That ...
• 191
Accepted

### Does scanning take much more battery than listening on one channel?

There are a few states of listening that you should think about: listening with the squelch closed, the receiver is probably off for 95% of the time, turned on a couple of times a second to check for ...
• 7,817
Accepted

### What is the socket for on this Baofeng BL-5L battery?

That's for charging a 3800mAh battery using the side jack. To charge the BL-5L 3800mAh battery you must purchase a: - TYT TH-UVF9 battery charger for 110VAC or - TYT TH-UVF9D for 12VDC. These are ...
• 66
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### How to figure out my car battery's capacity?

There are many ways to do this. My favorite and I would assume you have these items in your shack. Most inverters have an automatic low-voltage disconnect feature. It makes a beeping sound and stops ...
• 216

### Are there any cons of running shack on battery?

Possibly an issue with your HF CB rig is that the output power will be lower at 12.1 than at 13.8 or 14.0 volts. I've seen on 100 watt ham rigs that the final amplifier runs directly from the DC ...
• 7,817
Accepted

### How can I replace the NiMH battery in an old RigExpert AA230 Antenna Analyzer?

With the battery case detached from the device, look at the side with the copper terminals. You should see several seams that can be exploited with a sufficiently thin shim. I carefully used a box ...
• 1,445

### Coax braid acting as power supply ground between radio and amplifier connected to the same supply, is this a problem?

An anecdote: I had problems with my station which included computer-radio interconnections; some of my devices (RTL-SDRs) would lock up when I powered on my Yaesu FT-897. I eventually tracked this ...
• 22.9k

### Are there any cons of running shack on battery?

In addition to the points raised in the other fine answers, I'd like to add a few: A good three-stage battery charger for lead-acid batteries may cost more than a power supply. Many chargers make ...
• 8,922
Accepted

• 3,881

### Does scanning take much more battery than listening on one channel?

I would not be surprised if the audio amp used more power than the rf front, tuner osc, and signal detect combined. Thus listening at some reasonable speaker volume, and using energy to vibrate a ...
• 12.4k

### Can I use new 14500 batteries instead of AA with Yaesu VX-8DR?

This would very much depend on how the device is wired internally. Is it possible that this will work? Yes. Is it possible that you can destroy your device? Yes. The current that can be delivered ...
• 789

### How to figure out my car battery's capacity?

Is there a good way to find out [a battery's] real remaining capacity except draining it by a known current and measuring time? While I'm curious to this myself and would love to see other answers, ...
• 5,995

### Are there any cons of running shack on battery?

Add portable. You aren't stuck operating where there's an AC outlet. That's why most POTA and SOTA operators run off batteries, even when carrying solar panels or in an RV. Also possible ground ...
• 12.4k
1 vote

### Can I use new 14500 batteries instead of AA with Yaesu VX-8DR?

The answer to this is likely no. Even the internal lithium battery pack maxes out at 8.4v.
• 4,203
1 vote

### Coax braid acting as power supply ground between radio and amplifier connected to the same supply, is this a problem?

Should a 'a not so good contact' at the HT's external jack/plug be ruled out as a contributory factor, the only way to avoid DC current in the coax braid would be to have a separate battery pack for ...
• 727
1 vote

### FD Battery Stations... How Do You Log?

I built a voltage booster using a LT1270A for this purpose: https://www.qsl.net/ve3lny/booster.html
• 11

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