Whatttt? The Icom IC-705 Outputs How Much Power??
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- čas přidán 13. 09. 2024
- I recently watched a a power output test on the Icom IC-705 done by CZcamsr TheSmokinApe and I was intrigued as to his results on 70cm. He measured no more than 6 watts output. I decided to haul my service monitor (HP Agilent 8924C) out of the cupboard and test my 705 to see if I got the same results.
Watch TheSmokinApe's video below:
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Nice job Hayden, thanks for checking 👍
My Guess is that both 705's are fine but on 70cm, your test kit is 'up to the job' whereas the Smokin Ape's kit (VSWR Power meter) may not be. Such simple SWR bridges are often compromised a UHF frequencies.
Checked it in FM, all bands, put a lot of work in calibrating everything before the HP power detector, no problem, it is 10W at 13,6 volt.
The HP Agilent 8924C looks an amazing piece of kit ! thanks for uploading ! (2E0FWE - IC705 owner :)
I suspect your test equipment is slightly better than TheSmokinApe’s haha.
I have tested output power of my IC-705 on 430 MHz and I got 10,5 Watts with the probe connected directly to the BNC connector. I used an HP435B Power Meter with up to 18 GHz probe. If you use a piece of cable, in example a bad quality of RG58 with about 2 feet of lenght, I think it is normal to get a wrong value of the effective power of your radio. Enrico.
The real problem is that there is no real spec in the manual/website. Great vid!
Good to know. Thanks mate.
Very interesting video. Very nice radio!
Nice job
I think your radio is US model. At the bottom of your screen where it says "D-STAR" the European model says "DIGITAL".
Ahhhh I didn’t know that! Good spotting, thanks!
Contgrats !!
I wouldn't worry about the measured frequency inaccuracy... that's probably an inaccuracy of the 8924. It's a bit of an old hector now, and I recall it has no option for being GPS governed, so unless you have calibrated it via GPS or a rubidium standard, it has probably drifted a bit.
No it actually does have a 10 MHz input on the back, but you’re correct I didn’t have the GPS attached.
@@HamRadioDX I never knew that. I thought it only had a 10MHz output. I may look into getting one then, as they're cheap now, and I have a GPS reference receiver. 73
Yes well at least mine has an internal OCXO oven with a BNC jumper across to the 10 MHz input. Remove the jumper and plug your own GPS in :)
Yours must be European or US version as the Japan versions are firmware locked and can only do 144-146 tx and even removing jumpers/diodes wont unlock tx range
Great video
The difference is that you are using a $20,000 analyzer and TSA was using a $45
Signstek meter. I had one years ago, but sold it for like $20 at a hamfest because it wasn't all that accurate. Good enough to see if you are in the ballpark, maybe, but it is hardly an accurate measuring device.
Well I don’t think my analyzer is worth $20k, I’d sell it if it was 😆😉
Hi Hayden, as I wrote to TheSmokingApe, please do a test at 144.500 and 432.500Mhz. These are the frequencies in Europe. Do you have any differences with this test? I have the impression that the 705 is set between US and EU standard.
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Unacceptable for $1400, should be at least 20w all bands 10w uhf.
an FT 857D Does 100w HF, 50w VHF and is cheaper, waiting on yaesu to release a QRP all band radio that smokes this thing.
857 is not in shops for some time already...
The 705 is a nice radio, but there are full power rigs that may be better value for money.
If you aim for power? Yes, definitely! You aim for lightweight? Not really... I see so many comments like that -- "too little power for the price". But honestly, is the power what's the most expensive in the rigs? Isn't it a great receiver, clean transmitter that doesn't TX any garbage out, well developed DSP features? Aren't *these* the things that cost the money there? Don't we all desire the quality, complaining about all the Baofengs and other crappy even non-HAM electronic products that break right a week after the warranty? I hear such complaining so often, but when there's a great piece of fine engineering and almost an art, made in Japan, that costs its price, the same people aren't willing to pay it... KX3 is also expensive, but everyone just got used to it...
I love ultralight HAM radio equipment and this is what is the 705 made for and at that discipline, it's a great value for the money. For sitting in the shack, sure you have plenty of better choices... But you don't wanna bring your FT-991a in your backpack on a summit, along with batteries, able to feed its 1,5A idle power drain...
@@ferdinandfrozenstein Good points.
The IC 705 does an outstanding job for what it is designed for and then some. The receiver on this radio is simply outstanding and uses the same display as the IC 7300. If you want higher power, get the IC 7300. If you want portability with a strong feature set, get the IC 705.
$1400 for a 10w radio ?
yes. it’s an all band all mode QRP rig. smaller does not necessarily equate cheaper; it’s designed to be lightweight as well as highly versatile
But why if vhf/uhf are supposed to have the same output power, and according to the same website and same setting 431 mhz yes it is about what the site says but at 144 it should be 9watts and you get 10 so still not quiet right.
we need more people with the 705 to test this to see if it varies between radios (build quality)
I unfortunately cannot test it as I refuse to pay more for a 10w radio than I would a 100w radio.
"I unfortunately cannot test it as I refuse to pay more for a 10w radio than I would a 100w radio."
In which case the result of such a test is merely a curiosity to you.
It's a whole lot of money, for not a great deal of radio.
not everything is in the power. QRP is a valid enjoyment of the hobby too :)
What a troll. This wasn't even a productive comment. The 705 is the only radio I know of that I can take portable, connect it to my Bose headphones via bluetooth, and run FT8 from my iPhone without a laptop. But sure, complain harder.