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 30 AMP REGULATED POWER SUPPLY

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redsprite
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redsprite

Call Sign : 26-CT-3697
Posts : 40
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Join date : 2020-06-27
QTH or Location : Hemel Hempstead Hertfordshire
Equipment Used : PRESIDENT MCKINLEY.RadioMoble / SIRIO GAINMASTER 5/8.Sigma Venom 1/2 wave.
Age : 67

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PostSubject: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 5:43 pm

Hi all,

I have a QJ-1830SB regulated power supply  30 AMP  1.5-15V -DC.  it has a cigarette type outlet at 10 AMPS.....a double outlet of 6 AMPS,....and a single outlet of 30 AMPS.

I am running an expanded Mckinley giving around 8 watts AM/FM.....and around 20 watts SSB.

I am going to buy a cheap ZETAGI 300P LINEAR.

I won't be running more than 5 watts AM/FM......and maybe 10 watts SSB, input to the AMP so I won't be pushing the LINEAR too hard.

Question is could I run BOTH the Mckinley  and the Linear off the same power supply?

Steph

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Red Fox
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Red Fox

Call Sign : 108-CT-255
Posts : 126
Times Thanked : 16
Join date : 2020-04-24
QTH or Location : Fife Scotland
Equipment Used : Squawk Boxes & Wires - Both Annoy the other half :)

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 6:19 pm

Hi Steph,

If the model you are looking at is similar to the one in the link below, Your 30amp PSU should handle the RIG and Amp at full chat but with not a lot to spare. I certainly wouldn't push it to hard as many PSU's rate their top capability but not their ability to be used at their full output continuously.

https://www.hamradio-shop.co.uk/product/zetagi-b-300p/

Hope that helps a little.

73's Graeme.

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tigersaw
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tigersaw

Call Sign : 163-CT-256 GW6RRL
Posts : 31
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Join date : 2020-07-17
QTH or Location : Llanwrtyd Wells Powys
Equipment Used : CRT7900, FT891, FT818, Pro3

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 6:21 pm

I would say yes you should.  You will be running the amplifier at half power, perhaps up to 20A consumption.
Just make sure its on the 30A outlet,

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redsprite
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redsprite

Call Sign : 26-CT-3697
Posts : 40
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Join date : 2020-06-27
QTH or Location : Hemel Hempstead Hertfordshire
Equipment Used : PRESIDENT MCKINLEY.RadioMoble / SIRIO GAINMASTER 5/8.Sigma Venom 1/2 wave.
Age : 67

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 6:54 pm

Graeme, thanks for your comment's.

Yeah that IS  the LINEAR i,m buying and having read loads of reviews on this AMP, it wont DO what it say's on the "tin".  I don't expect it to draw excessive amounts of current if I keep it in the LOW  settings. I,ll be happy with 50-70 watts on AM/FM and possibly a 100 watts SSB.

cheers and 73's

Steph.
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redsprite
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redsprite

Call Sign : 26-CT-3697
Posts : 40
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Join date : 2020-06-27
QTH or Location : Hemel Hempstead Hertfordshire
Equipment Used : PRESIDENT MCKINLEY.RadioMoble / SIRIO GAINMASTER 5/8.Sigma Venom 1/2 wave.
Age : 67

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 6:57 pm

Thanks Tigersaw,

yeah, I will keep it the LOW settings on the AMP.

Steph.
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Red Fox
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Red Fox

Call Sign : 108-CT-255
Posts : 126
Times Thanked : 16
Join date : 2020-04-24
QTH or Location : Fife Scotland
Equipment Used : Squawk Boxes & Wires - Both Annoy the other half :)

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 7:34 pm

Hi Martin,

Well spotted with the model, thankfully I was only referring to something similar in the Zetagi range and picking up the specs for reference.
Glad you were able to provide a more detailed input for Steph.
 
Cheers

Graeme.

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redsprite
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redsprite

Call Sign : 26-CT-3697
Posts : 40
Times Thanked : 0
Join date : 2020-06-27
QTH or Location : Hemel Hempstead Hertfordshire
Equipment Used : PRESIDENT MCKINLEY.RadioMoble / SIRIO GAINMASTER 5/8.Sigma Venom 1/2 wave.
Age : 67

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 8:48 pm

Martin, NOTED.

Thanks for your input,I didn't notice the model either but the ZETAG B300P ....IS the one i,m after because of the "receive" PRE-AMP on it.

My thinking on running the RIG, and AMP, on the SAME power  supply is based on the fact that with the Mckinley on USB in (expanded)  it draws about 4.5-5 amps "keyed/talk" so my thinking was that if I run the AMP at around 4-5 watts "input" and the AMP on setting  one- or two it would probably only draw 15 amp's maybe peaking 20 amps, but I suppose that is near the limit.

Steph.
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redsprite
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redsprite

Call Sign : 26-CT-3697
Posts : 40
Times Thanked : 0
Join date : 2020-06-27
QTH or Location : Hemel Hempstead Hertfordshire
Equipment Used : PRESIDENT MCKINLEY.RadioMoble / SIRIO GAINMASTER 5/8.Sigma Venom 1/2 wave.
Age : 67

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeSat Jul 25, 2020 9:22 pm

Martin,

yeah your advice is appreciated,thanks. Ok on the pre-amp.

The fan tip is a good one,I do have a couple of PC  fan's so yeah,i,ll do that.

Steph.
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Call Sign : 26-CT-3759
Posts : 25
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Join date : 2020-07-23
QTH or Location : London
Equipment Used : Crt 9900 , 30 amp psu , Hawkins 5/8
Age : 69

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeFri Jul 31, 2020 10:33 pm

Can you use a psu from a pc to power the linear .. Question
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stephen Gunrunner
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stephen Gunrunner

Call Sign : 26CT526/MR021/M6XXX26DD666.
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Join date : 2019-06-27
QTH or Location : wooler north northumberland or some were near it
Equipment Used : sirio 4000 on tri mag base is the magnum257hp, mobile magnum257, and crt space-pmr
Age : 64

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PostSubject: Re: 30 AMP REGULATED POWER SUPPLY   power - 30 AMP REGULATED POWER SUPPLY Icon_minitimeFri Aug 07, 2020 6:05 pm

NUBSTER wrote:
OK Steph that sounds OK how your gonna do it mate ,just a little more info/advice as for the pre-amp they dont work very good plus also when switched on it dont just pick out the far off voice /signal if there is any interference or any other noise on the channel/frequency it will amplify that too, so there only useful if the channel your on is quiet.
I've had my B300P for a long time and never had any problems TBH I put a old computer cooling fan on top to help it keep cool when using for long periods power - 30 AMP REGULATED POWER SUPPLY Img-2015
that's the best way fan on the kicker radio stays cool no stress and the kicker stays cool as they get red hot not red but hot they drop power and then send all nasty things and it might go into your audio and you will not want that
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