Replacement battery for YAESU FT-817

Product Information

The two most popular no spot welding no soldering methods are the Vruzend 18650 end cap builds, and the sourcing map battery tray method.

FT-817ND | Used Amateur Radios | THUNDERPOLE Yaesu FT-817ND | Used Amateur Radios | THUNDERPOLE

So that makes 13,2V on a 4S LiFePo4 pack which is in the specs of all standard ham radio transceivers and this is also the perfect voltage for my chinese MX-P50M amp. Not surprinsingly they don't drift too much, as I mix only cells together which have the same capacity. On investigating the charger it looked as if one of the diodes in the rectifier bridge circuit had blown itself apart and damaged other components and the pcb. Nevertheless, no analogue supply capable of delivering at least 2A at 12V was going to meet my requirements.

I have done what most FT-817 owners probably do, and turned the SSB mike level up to get a louder signal, at the cost of a bit of splatter. As this is in a range about 10% or so this does not matter compared to the weight of my old SLAB batteries. The standard filter is too wide, so you hear too many other signals and noise, making it hard to copy any other than the strongest signal in the passband. A valid product review is one where you have experience or knowledge of the product that you would like to share with others.

FT-817, Yaesu FT817 Amateur Transceiver - Universal Radio Yaesu FT-817, Yaesu FT817 Amateur Transceiver - Universal Radio

Peukert’s law, presented by the German scientist Wilhelm Peukert in 1897, expresses approximately the change in capacity of rechargeable lead–acid batteries at different rates of discharge. Clearly you mustn’t use both charging methods at the same time (I presume this is why the battery tray that started this thread provides a switch).He can also charge a single cell at a 4,2V source (harvesting from an old cell phone power bank for example) in emergency situations. When you don't use an FT-817, you might need a 4S-pack with a diode or a bridge rectifier in series to draw a bit of voltage. SSB needs a much bigger signal to noise ratio than CW to be read, plus it needs a wider bandwidth receiver, which increases the amount of noise the listener has to contend with, decreasing their chances of being able to hear you. Stations between about 600 and 2000km can become stronger than those 50km away when the propagation is in.

Best internal battery upgrade option for FT-817nd? : r Best internal battery upgrade option for FT-817nd? : r

If you’re on an incredibly tight budget, trying to solve a problem right here right now without thinking about the long-term cost, lead-acid batteries are reasonable. The Yaesu FT-817ND is the world’s first self-contained, battery-powered, multi-mode portable transceiver covering the HF, VHF, and UHF bands,For more than four decades, Yaesu has been a world leader in the design and manufacture of high-performance multi-mode base station and mobile transceivers, as well as FM hand held. S. 60-meter (5 MHz) band, and it also includes a 1400 mah NiMH Battery pack (FNB-85) and NC-72B Charger. Especially when the bands are crowded, operating CW with a standard FT-817/FT-818 can be a trying experience. Unfortunately it’s not really useful for effective communications in the field, because of its very limited battery capacity.

Then it's up to your ingenuity and good luck to find something that can be loaded up as an antenna and get contacts. But in my experience people who are not CW fans don't like the mode because they find it too difficult to use - because they didn't learn it properly. are around in quantity of billions, if you know what you do, the chance of blowing someting in ZERO. Both work well but the latter is superior when there are a lot of strong signals near the receive frequency. It’s also important to point out neither lithium-ion or lithium iron phosphate suffer the effects of Peukerts Law, to the extreme of lead acid batteries.

Yaesu FT-817 Battery Replacement FNB-72, FNB-85 - subtel

Previous experiences with switched mode power supplies have led me to regard these devices as the work of the devil. A contest-grade receiver isn't expected nor required in a radio of this type, but the FT-817's receiver seems poorer than it need be. Now the 817 legacy is even better with the introduction of the FT-817ND, which includes coverage of the U. This is still disappointing, though, as one of the main uses of a small, lightweight PSU would be to power the radio in /A locations (hotel rooms, etc) when the chances are you will be using an indoor antenna. Reviews of equipment capable of CB/Freeband operation or not FCC Certified/Type Accepted may be removed.

Instead find a battery, fire up the FT-817/FT-818 and savour the temporary pleasure of exploring the unusually quiet bands. People say they’re expensive, but it only hurts once, where you lead acid chemistry will continuously pinch your pocket over the long run. In this article I will describe how I built a cheap DIY 18650 Lithium-Ion battery pack for my Yaesu FT-817. I know there a few options for a higher capacity battery and modded door that can be charged without having to remove.