Posted 20 hours ago

Replacement battery for YAESU FT-817

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The good news is that when operating on the 2.5W mode (the default for battery power) the FT-817 appears to deliver the full 2.5W regardless of SWR. I guess this applies to the lower power modes too. All-band" coverage. The FT-817 covers all amateur bands from Top Band to 70cm (excluding the UK-only 4m band and the US-only 222MHz band.) It also has pretty extensive general coverage capabilities. This makes it an ideal "do-anything" radio, suitable for whatever kind of operation you feel like doing. Products to be reviewed typically should be tangible ham radio related items such as radios, antennas, towers, test equipment, feedlines, etc.

FT817 external batteries; what is your latest recommendation?

if the island is a separate IOTA group to where you normally live you may attract the attention of IOTA chasers.I don’t think the 817 achieves full power on 9.9V Colwyn. ISTR it needs nearer 10.5V. There is some variation between 817s and also it depends on the band in use. That is why the 3S LiPO was so popular, even though the voltage varied from about 12.6v down during operation, there was enough to give full output until the battery was discharged. Other sets are much less forgiving, the 857 likes more volts. longest-lived transceiver model. It has attracted a strong following amongst portable and QRP operators. While other TX Frequency Coverage: 160 - 10 Meters, 50 MHz, 144 MHz, 430-450 MHz, plus Alaska Emergency Channel (5167.5 kHz). You can add to or update/edit your existing review's content including the Rating and Time Owned with the Edit button on the right side of the review text body. Edits will go thru the review Approval process.

FT-817 Page - G4ILO The FT-817 Page - G4ILO

default setting (at least on my rig) was not ideal. Not that most users would notice since few would use it on AM mode, but you might as well have it right, especially since the settings can be done from the

enjoy the novelty of working a pedestrian mobile station >1000km away as much as you did working them. If your new review has not been Approved after several days you can assume that it was found to not be within the product review T's&C's shown below during screening.

The KA7OEI FT-817 pages - Operating from various types of The KA7OEI FT-817 pages - Operating from various types of

Note that a special crimp tool is required to install the pins terminals/pins properly, but like most crimp-type connectors it may be possible to do some very careful soldering and "manual" crimping to make a reliable electrical and mechanical connection. The design calls for protected 18650s to be used. These have a circuit in them that isolates them if you try to draw current when the cell is discharged to its minimum voltage. i.e. you can’t over discharge them. It also disconnects them if the voltage applied to the cell exceeds 4.2V. With that type of 18650 and the green wire in place, the whole system looks to be fine and dandy. Personally I prefer 500 Hz as I'm in Australia and the bands are fairly quiet. But those in more densely populated areas might got for a narrower (250 Hz) filter. Installation ie easy and requires no soldering. My FT-817 sits quite happily on top of my Maplin 3A power supply and looks as if it was made for it. Unfortunately, the magnetic field from the mains transformer affects the 817's VFO, giving a "dirty" note to signals. The power supply is also twice as high and about 4 times as heavy as the FT-817, making it not something you really want to carry around on trips. I thought I would try to find something smaller and lighter.

Yaesu FT-817ND Amateur Radio | HF/VHF/UHF Mobile Transceiver

This is not a strictly fair comparison, because I did not make a recording before the FT-817 microphone was modified. I think even the uncompressed audio using the electret mike is an improvement over the original. Again, there isn't a huge difference in loudness between compressor on and compressor off, due to the AGC effect. The compressed version sounds compressed, and the uncompressed audio is certainly more hi-fi. Tom Watson, then IBM chairman, who said in 1958: ‘I think there is a world market for about five computers.’ There are a couple of precautions to observe when transmitting. Use the 1 or 2.5w power setting as digital modes are often 100% duty cycle. And don't I have 2 of the Zippy LiFePO4 4200mAh and find them pretty good. I get about 5-6 hours out of 1 on my 817 and weigh 480gm each and a decent size (you can fit 3 or 4 lengthways on an 817).

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