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Re: How to measure current drawn by a 100w transceiver at 25w
Frank, my mistake, it was a EM500A 500w like new….Iwa’s asking $200? ….Would let it go for $100……Didn’t mean to miss lead you…Fred ?
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From: [email protected] <[email protected]> On Behalf Of Frank Gitto KA5VVI via groups.io
Sent: Tuesday, January 14, 2025 7:32 PM
To: [email protected]
Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w? Fred, ?what model Honda is it?
Sent using the mobile mail app
On 1/14/25 at 7:29?PM, Fred W5BN via groups.io wrote:
From: "Fred W5BN via groups.io" <W5BN12850@...>
Date: January 14, 2025
To: [email protected]
Cc:
Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w For what it’s worth I have a nice Honda Generator for$70, about 250w.? Quiet….Fred W5BN ? ? Tim, what you bought is apparently not the same as the Redodo battery that David posted, below. Again, that battery is $114, and the charger is $80.? ? ? My bundle was around $80-$85. The battery alone is $47 now, but can't find a bundle with charger.
? ?
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A 10a and charger a lot cheaper! Frank
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Re: How to measure current drawn by a 100w transceiver at 25w
Frank does use that redodo?battery for his small portable kit (FT-891 and LDG?AT-100PRO-II). I was mostly just sharing it because the price for that kind of capacity was impressive. Bioenno is most likely a better quality battery but to compare, a 50Ah from redodo?is $114-$150 and a 50Ah from bioenno is $470. Weight is similar with the bioenno listed as 13.3lb.
David Gealt
KD2BVA COMT, AUXCOMM
Warren County EC/RO ENY Northern District ADEC
On Tue, Jan 14, 2025 at 7:13?PM Howard Lester N7SO via <howardlester= [email protected]> wrote:
Tim, what you bought is apparently not the same as the Redodo battery that David posted, below. Again, that battery is $114, and the charger is $80.?
My bundle was around $80-$85. The battery alone is $47 now, but can't find a bundle with charger.
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Re: How to measure current drawn by a 100w transceiver at 25w
Fred, ?what model Honda is it? Interested, Frank. ?KA5VVI
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On 1/14/25 at 7:29?PM, Fred W5BN via groups.io wrote:
From: "Fred W5BN via groups.io" <W5BN12850@...> Date: January 14, 2025 To: [email protected]Cc: Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w
For what it’s worth I have a nice Honda Generator for$70, about 250w.? Quiet….Fred W5BN
?
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From: [email protected] <[email protected]> On Behalf Of Howard Lester N7SO via groups.io
Sent: Tuesday, January 14, 2025 7:14 PM
To: [email protected]
Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w
?
Tim, what you bought is apparently not the same as the Redodo battery that David posted, below. Again, that battery is $114, and the charger is $80.?
?
My bundle was around $80-$85. The battery alone is $47 now, but can't find a bundle with charger.
?
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Re: How to measure current drawn by a 100w transceiver at 25w
For what it’s worth I have a nice Honda Generator for$70, about 250w.? Quiet….Fred W5BN ?
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From: [email protected] <[email protected]> On Behalf Of Howard Lester N7SO via groups.io
Sent: Tuesday, January 14, 2025 7:14 PM
To: [email protected]
Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w? Tim, what you bought is apparently not the same as the Redodo battery that David posted, below. Again, that battery is $114, and the charger is $80.?
? My bundle was around $80-$85. The battery alone is $47 now, but can't find a bundle with charger.
?
|
Re: How to measure current drawn by a 100w transceiver at 25w
Tim, what you bought is apparently not the same as the Redodo battery that David posted, below. Again, that battery is $114, and the charger is $80.?
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My bundle was around $80-$85. The battery alone is $47 now, but can't find a bundle with charger.
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Re: How to measure current drawn by a 100w transceiver at 25w
My bundle was around $80-$85. The battery alone is $47 now, but can't find a bundle with charger.
Tim W2UI
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I got that one to go with a multi radio go box and assuming the epic pwrgate is ever back in stock the box should be able to run on AC or DC (primary or backup) power with an optional solar panel. Or at least that was my plan.?
David Gealt
KD2BVA
COMT, AUXCOMM
Warren County EC/RO
ENY Northern District ADEC
On Jan 14, 2025, at 5:50?PM, Howard Lester via groups.io <howardlester12@...> wrote:
?
Tim, et. al,
$200 for the 12 lb. 50A Redodo battery and charger from Amazon.?
$125 for the 12A LiFePO4 battery from Bioenno, 3+ lbs. That should give me about 2 hours of playing time with the FTDX10, maybe more, depending on the duty cycle.?
Howard
Hi All,
This is the one that I got a month ago. Amazon had a bundle special. Can't remember $$.
LiFePO4 is the only technology to consider.
73, Tim
Get
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Re: How to measure current drawn by a 100w transceiver at 25w
Yes, for people like you who are very active in ARES and other organizations, you can certainly make good use of that kind of large battery system. Me, I’m right now just “thinking about it,” and would want to keep things as simple and lightweight as possible — with what I have. I would need a smaller, lighter CW paddle, and probably a headset with a boom mic. Oh, a simple, easy-to-deploy multi-band antenna would help, too. :-) I guess I’ll think along the lines of POTA.
Howard
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I got that one to go with a multi radio go box and assuming the epic pwrgate is ever back in stock the box should be able to run on AC or DC (primary or backup) power with an optional solar panel. Or at least that was my plan.
David Gealt
KD2BVA
COMT, AUXCOMM
Warren County EC/RO
ENY Northern District ADEC
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Re: How to measure current drawn by a 100w transceiver at 25w
I got that one to go with a multi radio go box and assuming the epic pwrgate is ever back in stock the box should be able to run on AC or DC (primary or backup) power with an optional solar panel. Or at least that was my plan.?
David Gealt KD2BVA COMT, AUXCOMM Warren County EC/RO ENY Northern District ADEC
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On Jan 14, 2025, at 5:50?PM, Howard Lester via groups.io <howardlester12@...> wrote:
? Tim, et. al,
$200 for the 12 lb. 50A Redodo battery and charger from Amazon.?
$125 for the 12A LiFePO4 battery from Bioenno, 3+ lbs. That should give me about 2 hours of playing time with the FTDX10, maybe more, depending on the duty cycle.?
Howard Hi All,
This is the one that I got a month ago. Amazon had a bundle special. Can't remember $$.
LiFePO4 is the only technology to consider.
73, Tim
Get
On Jan 14, 2025, at 4:55?PM, "Howard Lester via " < gmail.com@groups.io target=_blank> [email protected]> wrote:
Thanks, David. That should power my whole house. ? ;-)?
I saw the one KA5VVI had and got one too
?
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Re: How to measure current drawn by a 100w transceiver at 25w
Tim, et. al,
$200 for the 12 lb. 50A Redodo battery and charger from Amazon.?
$125 for the 12A LiFePO4 battery from Bioenno, 3+ lbs. That should give me about 2 hours of playing time with the FTDX10, maybe more, depending on the duty cycle.?
Howard
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Hi All,
This is the one that I got a month ago. Amazon had a bundle special. Can't remember $$.
LiFePO4 is the only technology to consider.
73, Tim
Get
On Jan 14, 2025, at 4:55?PM, "Howard Lester via " < gmail.com@groups.io target=_blank> [email protected]> wrote:
Thanks, David. That should power my whole house. ? ;-)?
I saw the one KA5VVI had and got one too
?
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Re: How to measure current drawn by a 100w transceiver at 25w
Hi All,
This is the one that I got a month ago. Amazon had a bundle special. Can't remember $$.
LiFePO4 is the only technology to consider.
73, Tim
Get
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Thanks, David. That should power my whole house. ? ;-)?
I saw the one KA5VVI had and got one too
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Re: How to measure current drawn by a 100w transceiver at 25w
Thanks, David. That should power my whole house. ? ;-)?
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I saw the one KA5VVI had and got one too
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Re: How to measure current drawn by a 100w transceiver at 25w
I saw the one KA5VVI had and got one too | |
David Gealt
KD2BVA
COMT, AUXCOMM
Warren County EC/RO
ENY Northern District ADEC
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On Jan 14, 2025, at 3:55?PM, Howard Lester via groups.io <howardlester12@...> wrote:
?
Hi Ryan,
I’d buy this one:
I already have a Bioenno 2A charger for it, and there can't be enough of a difference for my needs between 12A and 15A. (The 15A model requires[?] the 4A charger.)?
Nice! Now what chemistry battery are you looking for?
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Re: How to measure current drawn by a 100w transceiver at 25w
Hi Ryan,
I’d buy this one:
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I already have a Bioenno 2A charger for it, and there can't be enough of a difference for my needs between 12A and 15A. (The 15A model requires[?] the 4A charger.)?
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Nice! Now what chemistry battery are you looking for?
?
Re: How to measure current drawn by a 100w transceiver at 25w
Nice! Now what chemistry battery are you looking for?
On Tue, Jan 14, 2025, 3:16?PM Howard Lester N7SO via <howardlester= [email protected]> wrote: You’re welcome, Fred! I’m glad I could get something going here. By the way, I forgot to remind folks that the transceiver I measured is my Yaesu FT DX10.?
Howard ?N7SO
Howard,
This was the most lively technical discussion I've seen on this Groups.io list in a L O N G time!! Thanks for asking the question and getting our minds in gear again.
Best Regards, |  | Fred Halley - W2EMS
Section Emergency Coordinator,?ARRL Eastern New York Section | |
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Re: How to measure current drawn by a 100w transceiver at 25w
You’re welcome, Fred! I’m glad I could get something going here. By the way, I forgot to remind folks that the transceiver I measured is my Yaesu FT DX10.?
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Howard,
This was the most lively technical discussion I've seen on this Groups.io list in a L O N G time!! Thanks for asking the question and getting our minds in gear again.
Best Regards, | | Fred Halley - W2EMS
Section Emergency Coordinator,?ARRL Eastern New York Section | |
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Re: How to measure current drawn by a 100w transceiver at 25w
Great info Howard. Thanks
On Tue, Jan 14, 2025 at 1:58?PM Howard Lester via <howardlester12= [email protected]> wrote: Well, gang, I received the Powerwerx in-line meter, and the results are in!?
First, the Astron 30A switching supply I’m using to run the tests provides 13.81V, per the Powerwerx, so that’s good. Second, receive amperage drawn was a maximum 2.06A, which was with a good, loud received signal on SSB. Odd, an S9 CW signal peaked 1.93A. These figures are quite a bit lower than Yaesu’s spec of 3A with a received signal. That’s good, too.?
OK, on to the fun stuff: transmitting both CW and SSB, but not at the same time. ? ;-) ?Be aware that, even key down, the amperage draw kept slowly increasing until it stopped. The figures cited are maxima.
CW key down?
5W ? ?7.8A 10W ?9.3A 25W 12.42A 50W 16A 75W 18.5A 100W 19.6A
CW at 18 WPM? Note that the amperage as shown on the Powerwerx meter jumped all over the place, likely due to whatever lag there is to record by the meter’s circuitry. So, I’m showing the maximum.
5W ? ? approx. 5.9A maximum 10W ? approx. 6.84A maximum 25W ? approx. 8A maximum 100W approx. 12A maximum
SSB?(This, of course, is “impossible” to control for a steady signal)
5W ? ? 4.8A 10W ? 5A 25W ? 6A 50W ? 8A 75W ? 8.5A 100W 8.5A
So, now I know what size battery to buy should I want to take my radio out “in the field,” and consider for how long I’d want to be out there.?
Howard N7SO
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Re: How to measure current drawn by a 100w transceiver at 25w
Howard,
This was the most lively technical discussion I've seen on this Groups.io list in a L O N G time!! Thanks for asking the question and getting our minds in gear again.
Best Regards, | | Fred Halley - W2EMS
Section Emergency Coordinator,?ARRL Eastern New York Section | |
|
|
| | ? |
----------------------------------------- From: "Howard Lester via groups.io" To: [email protected]Cc: Sent: Tuesday January 14 2025 1:58:01PM Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w
Well, gang, I received the Powerwerx in-line meter, and the results
are in!?
First, the Astron 30A switching supply I’m using to run the
tests provides 13.81V, per the Powerwerx, so that’s good. Second,
receive amperage drawn was a maximum 2.06A, which was with a good,
loud received signal on SSB. Odd, an S9 CW signal peaked 1.93A.
These figures are quite a bit lower than Yaesu’s spec of 3A with a
received signal. That’s good, too.?
OK, on to the fun stuff: transmitting both CW and SSB, but not
at the same time. ? ;-) ?Be aware that, even key down,
the amperage draw kept slowly increasing until it stopped. The
figures cited are maxima.
CW key down?
5W ? ?7.8A
10W ?9.3A
25W 12.42A
50W 16A
75W 18.5A
100W 19.6A
CW at 18 WPM? Note that the amperage as shown on
the Powerwerx meter jumped all over the place, likely due to
whatever lag there is to record by the meter’s circuitry. So, I’m
showing the maximum.
5W ? ? approx. 5.9A maximum
10W ? approx. 6.84A maximum
25W ? approx. 8A maximum
100W approx. 12A maximum
SSB?(This, of course, is “impossible” to control
for a steady signal)
5W ? ? 4.8A
10W ? 5A
25W ? 6A
50W ? 8A
75W ? 8.5A
100W 8.5A
So, now I know what size battery to buy should I want to take
my radio out “in the field,” and consider for how long I’d want to
be out there.?
Howard N7SO
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Re: How to measure current drawn by a 100w transceiver at 25w
Thanks Howard for the research! Frank. : )
Sent using the mobile mail app
On 1/14/25 at 1:58?PM, Howard Lester via groups.io wrote:
From: "Howard Lester via groups.io" <howardlester12@...> Date: January 14, 2025 To: [email protected]Cc: Subject: Re: [K2DLL - Saratoga County ARA] How to measure current drawn by a 100w transceiver at 25w
Well, gang, I received the Powerwerx in-line meter, and the results are in!?
First, the Astron 30A switching supply I’m using to run the tests provides 13.81V, per the Powerwerx, so that’s good. Second, receive amperage drawn was a maximum 2.06A, which was with a good, loud received signal on SSB. Odd, an S9 CW signal peaked 1.93A. These figures are quite a bit lower than Yaesu’s spec of 3A with a received signal. That’s good, too.?
OK, on to the fun stuff: transmitting both CW and SSB, but not at the same time. ? ;-) ?Be aware that, even key down, the amperage draw kept slowly increasing until it stopped. The figures cited are maxima.
CW key down?
5W ? ?7.8A
10W ?9.3A
25W 12.42A
50W 16A
75W 18.5A
100W 19.6A
CW at 18 WPM? Note that the amperage as shown on the Powerwerx meter jumped all over the place, likely due to whatever lag there is to record by the meter’s circuitry. So, I’m showing the maximum.
5W ? ? approx. 5.9A maximum
10W ? approx. 6.84A maximum
25W ? approx. 8A maximum
100W approx. 12A maximum
SSB?(This, of course, is “impossible” to control for a steady signal)
5W ? ? 4.8A
10W ? 5A
25W ? 6A
50W ? 8A
75W ? 8.5A
100W 8.5A
So, now I know what size battery to buy should I want to take my radio out “in the field,” and consider for how long I’d want to be out there.?
Howard N7SO
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David Gealt KD2BVA
Tim W2UI
Ryan Tourge, N2YQT