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Author Topic: Acom 700s during power blackouts  (Read 434 times)

KI5AXE

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Acom 700s during power blackouts
« on: March 14, 2021, 04:55:49 AM »

Just curious what type of generator would handle an acom 700s for use during power outages along with an icom 7300 and external atu. I’ve seen the Honda EU2200is have models with 20 amp outlets and 30 amp outlets. Does it matter which one? I’ve looked through the topics and didn’t see anything relating to this AND I’m what you would call a non technical ham I suppose. I apologize in advance if this is a stupid question. Thank you.

      Jim Moriarty
        KI5AXE
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W9IQ

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Re: Acom 700s during power blackouts
« Reply #1 on: March 14, 2021, 06:01:01 AM »

An easy way to estimate the minimum required generator capacity is to add the maximum power draw of each device and then apply a safety factor. For example:

Icom 7300: 21 amps at 13.8 volts ≃ 200 watts
Acom 700S ≃ 1350 watts
Antenna tuner ≃ 50 watts

Your total is ≃ 1600 watts. Apply an 80% safety factor to allow for start-up surges and power factors less than 1:

1600 watts / .8 = 2000 watts.

So the Honda 2200 should meet your needs. The standard 20 amp duplex socket should power your station. Plug the amp into one side of the duplex outlet and the balance of the station in the other. Make certain you have a heavy duty 120 VAC cord and the right fuses for the amp.

- Glenn W9IQ
« Last Edit: March 14, 2021, 06:10:35 AM by W9IQ »
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- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

KI5AXE

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Re: Acom 700s during power blackouts
« Reply #2 on: March 14, 2021, 06:05:38 AM »

Thank you sir.
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W9IQ

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Re: Acom 700s during power blackouts
« Reply #3 on: March 14, 2021, 06:28:12 AM »

Happy to help, Jim.

- Glenn W9IQ
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- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

K6AER

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Re: Acom 700s during power blackouts
« Reply #4 on: March 14, 2021, 11:16:25 AM »

An easy way to estimate the minimum required generator capacity is to add the maximum power draw of each device and then apply a safety factor. For example:

Icom 7300: 21 amps at 13.8 volts ≃ 200 watts
Acom 700S ≃ 1350 watts
Antenna tuner ≃ 50 watts

Your total is ≃ 1600 watts. Apply an 80% safety factor to allow for start-up surges and power factors less than 1:

1600 watts / .8 = 2000 watts.

So the Honda 2200 should meet your needs. The standard 20 amp duplex socket should power your station. Plug the amp into one side of the duplex outlet and the balance of the station in the other. Make certain you have a heavy duty 120 VAC cord and the right fuses for the amp.

- Glenn W9IQ

Glen,

Do the Honda inverter generators have any regulation problems when used in the area of high HF RF? All my generators are the magnetic syn wave types and was wondering.
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W9IQ

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Re: Acom 700s during power blackouts
« Reply #5 on: March 14, 2021, 12:15:25 PM »

I have never had a problem and have never heard of one. I have also used my cheaper Northern Tool version without any problems (100 watts on HF). Perhaps others will chime in.

- Glenn W9IQ
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- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

K6AER

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Re: Acom 700s during power blackouts
« Reply #6 on: March 14, 2021, 12:35:29 PM »

I have never had a problem and have never heard of one. I have also used my cheaper Northern Tool version without any problems (100 watts on HF). Perhaps others will chime in.

- Glenn W9IQ

Thanks - Mike K6AER
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W1MOW

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Re: Acom 700s during power blackouts
« Reply #7 on: March 15, 2021, 02:32:01 PM »

I have never had a problem and have never heard of one. I have also used my cheaper Northern Tool version without any problems (100 watts on HF). Perhaps others will chime in.

- Glenn W9IQ

Thanks - Mike K6AER

I've run the Champion 3500 on a 100 watt radio without an issue. Also ran our 30 amp trailer with no problem.

Gary W1MOW
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The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt - Bertram Russell (1935)

So not much has changed in almost 90 years!

KD4UPL

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Re: Acom 700s during power blackouts
« Reply #8 on: April 25, 2021, 07:07:57 AM »

The Honda EU2200 with the 30 amp outlet is called the companion model. If you hook it in parallel with another EU2200 you then have a 4400 watt generator. Thus, you need a 30 amp outlet to take better advantage of the total power available. You can use just the companion unit by itself but you can't get any more than 2200 watts out of it so you just use the 20 amp outlet. I have one of each of these generators. I rarely use them together; mostly I use one at a time to run tools on a job site. I try to alternate which one i use so they both get some activity. The only down side to using the companion is then you only have 1 20 amp outlet instead of a duplex.
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K0UA

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Re: Acom 700s during power blackouts
« Reply #9 on: June 22, 2021, 08:16:07 AM »

I have never had a problem and have never heard of one. I have also used my cheaper Northern Tool version without any problems (100 watts on HF). Perhaps others will chime in.

- Glenn W9IQ

Thanks - Mike K6AER

Hi Mike, enjoyed our SSB QSO a few days ago.  73  James K0UA :)
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73  James K0UA

WA8NVW

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Re: Acom 700s during power blackouts
« Reply #10 on: June 22, 2021, 11:04:09 AM »

Not to nitpick Glenn W9IQ TOO much, but my Microsoft calculator widget says that 13.8 VDC at 21 Amps computes to 289.8 watts, considerably more than 200.  Maybe a modulation waveform adjustment was applied and not mentioned?  :-[ 
And for Jim KI5AXE, no need to apologize for your question.  To quote more than one of my college lab instructors, "The only stupid questions are the ones that don't get asked."
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G4AON

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Re: Acom 700s during power blackouts
« Reply #11 on: June 25, 2021, 12:56:56 PM »

I currently use a Yamaha EF2800i inverter generator with an IC-7300 and Elecraft KPA500. The Yamaha generator is both heavy and an awkward shape for one person to carry far. It is noisier than I would like, but not excessively so. It has been 100% reliable over many years use.

The Yamaha will run all day on a tank of fuel and easily powers the KPA500 to our 400W legal limit.

I would like to sell the generator and use a suitcase one. A Honda EU2200 looks like one of the better options, although without modification the running time looks to be a little short. I have seen the replacement fuel tank cap mod for the Honda units, are these viable to extend the running time, and is the EU2200 capable of running a 400W o/p amp without coughing too much on CW?

73 Dave
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K6BRN

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Re: Acom 700s during power blackouts
« Reply #12 on: June 25, 2021, 05:31:15 PM »

Do the Honda inverter generators have any regulation problems when used in the area of high HF RF? All my generators are the magnetic syn wave types and was wondering.

Mike (K6AER):

I've used an FTDX-3000/KPA-500 and FT-991/KPA-500 combo with a Honda EU2200is and EU6500is, and the FTDX-3000 and FT-991 with a Honda EU1000i with no generator voltage regulation or operation upsets.  These are all inverter models.

HOWEVER!

Honda has just updated the newer versions to have Bluetooth remote operation and CO sensors.  I do NOT know how these new electronic add-ons impact RFI resistance.

Brian - K6BRN
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KM1H

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Re: Acom 700s during power blackouts
« Reply #13 on: July 05, 2021, 06:06:48 PM »

Why are a few comparing amps at 13.6V with an AC generator supplying 120 and 240 VAC?

My generators are a new 4500W Tecumseh from Northern Tools I bought shortly before Hurricane Gloria in 1985. It still runs fine with a few new Chinese carbs and poor gas over the years. It is presently dedicated to my 600' deep well pump.

The other is a Champion 6000W from ~ 1994 that was used once and stored until last year when a friend doing a cleanout of an elderly couple home put me on to it, replaced the gummed up carb and all is good again.
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