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Call Sign : 26-CT-4951 Posts : 65 Times Thanked : 0 Join date : 2023-09-12 QTH or Location : Malvern Worcester Equipment Used : Thunderpole T 2000 Age : 59
Subject: Black out lcd & power fail . Tue Oct 03, 2023 1:56 pm
Hello. I have a ss9900, as I was transmitting , the lcd went black and the power momentarily went of & came back on, what would cause this ? The radio is new, ive run it on a 13.8 v and checked all connections.
It's homebased. I've been advised that I need a 30amp power supply. This has happened twice, would like a second opinion please. Many thanks
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Mavic2Pro New Member
Call Sign : 26-CT-4634 Posts : 28 Times Thanked : 0 Join date : 2022-07-27 QTH or Location : Clacton Equipment Used : Super Star 3900 (2023),Yaseu FT-450D, Uniden Uniace 200, Audioline PT-341, CRT SS6900 V V7, Astatic 575-M6 Teardrop, Uniden 125xlt, Baofeng UV-5rIII, Malachite SDR, Realistic Pro 2006. Sirio 5/8 Gainmaster, Procomm PT-99 Age : 63
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 2:20 pm
Hi Pauline.
I have a CRT6900V - The SS9900's baby brother. I was running this using a 10amp power supply, and if I turned it up to the full 40watts on FM and keyed up, the 6900's display would dim. The SS9900 does 50 watts - so I would definitely say go for a minimum of a 30amp regulated power supply.
I now have a 40amp Nevada regulated power supply that powers the 6900, a superstar 3900 and a pre-amp. No more troubles with the displays dimming.
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Pauline Flynn Contributor
Call Sign : 26-CT-4951 Posts : 65 Times Thanked : 0 Join date : 2023-09-12 QTH or Location : Malvern Worcester Equipment Used : Thunderpole T 2000 Age : 59
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 3:11 pm
Thank you
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Les-1 10 + Year member
Call Sign : 26CT739 / 26GB739 Posts : 63 Times Thanked : 8 Join date : 2019-07-16 QTH or Location : Forest of Dean, Gloucestershire Equipment Used : Superstar 3900n, Magnum S9, Cobra 148 GTL DX, Superstar 360 FM, Nato 2000, Lafayette 1200, Hygain V, Albrecht AE2990AFS, Cobra uk29 LTD ST, York jcb 863, York jcb 861, Uniden Uniace 200, Midland 4001, RM KLV550, RM KL400, Zetagi B300P, Sirio GainMaster, T2LT, 7' Firestik, Atron99, 18' Silver rod, Sadelta Echo Master plus, Astatic echomax 2000, Moonraker power mic Age : 59
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 3:33 pm
Hi Pauline, I run a 50 amp with no problem, plenty of power These do come under other names too if pennies allow
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Alan Pilot Major contributor
Call Sign : 163-CT-220... Posts : 2656 Times Thanked : 70 Join date : 2019-11-19 QTH or Location : Anglesey North Wales Equipment Used : Yaesu FT-991A,,Yaesu FTDX-10,,Icom ic-7610,,Anytone AT-D878UV PLUS",,LINCOLN II+. Age : 16
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 3:56 pm
Took me a while but found a picture of my power supply. 60amp runs all my HF gear plus my lighting and heating well powers he diesel heater i heat the shack with. Main output terminals at the rear on this one.
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Pauline Flynn Contributor
Call Sign : 26-CT-4951 Posts : 65 Times Thanked : 0 Join date : 2023-09-12 QTH or Location : Malvern Worcester Equipment Used : Thunderpole T 2000 Age : 59
Subject: What make? & where from please? Tue Oct 03, 2023 4:09 pm
Les-1 wrote:
Hi Pauline, I run a 50 amp with no problem, plenty of power These do come under other names too if pennies allow
Les-1 10 + Year member
Call Sign : 26CT739 / 26GB739 Posts : 63 Times Thanked : 8 Join date : 2019-07-16 QTH or Location : Forest of Dean, Gloucestershire Equipment Used : Superstar 3900n, Magnum S9, Cobra 148 GTL DX, Superstar 360 FM, Nato 2000, Lafayette 1200, Hygain V, Albrecht AE2990AFS, Cobra uk29 LTD ST, York jcb 863, York jcb 861, Uniden Uniace 200, Midland 4001, RM KLV550, RM KL400, Zetagi B300P, Sirio GainMaster, T2LT, 7' Firestik, Atron99, 18' Silver rod, Sadelta Echo Master plus, Astatic echomax 2000, Moonraker power mic Age : 59
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 5:16 pm
Same as mine just under different name on fleabay
50 amp power supply
or if not on fleabay these below (just a few for you)
sharman 50
QJE 50
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Sharpshooter Major contributor
Call Sign : 163-CT-329 Posts : 489 Times Thanked : 13 Join date : 2022-04-05 QTH or Location : Deeside, Flintshire Equipment Used : A growing list
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 6:00 pm
The CRT 9900 draws 12 amps on tx according to the manufacturer. So you ideally need a 15 amp constant power supply minimum to run it.
Alan pilot advised you to get a 30 amp power supply to cover you for any future purchases of ham radio that require more amps. Not because you need that much for that radio.
I don't know how much knowledge you have on the subject and you may be getting confused with information overload whilst learning . So to sum up. They all run on 13.8 volts They will all power up on a 13.8 volt power supply even one as low as say 3 amp. It's when you transmit and need to draw more power that the problems start. A normal CB with 4 watt output power will transmit on a 3 watt PS but most people will probably use a 5watt - 7 watt surge. A CRT 9900 putting out 50 or 60 watts needs a 12 watt PS so a 15 watt is needed minimum or a 20 watt to be safer.
Think of a little 1000 cc (1 ltr) car driving flat out at 100 mph, it'll blow the engine sooner or later. A 3000 cc (3 ltr) could cruise at 100mph.
30 amp is more than enough for your 9900
It won't be struggling to run your radio and it will future proof you for ham radio in the future.
Alan Pilot, Mavic2Pro and TamGlasgow like this post
Pauline Flynn Contributor
Call Sign : 26-CT-4951 Posts : 65 Times Thanked : 0 Join date : 2023-09-12 QTH or Location : Malvern Worcester Equipment Used : Thunderpole T 2000 Age : 59
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 6:58 pm
I am a newbie , 80's 90's cb , getting back into cb , re learning, never had a homebase. As I am learning I do get confused with info, and ask for a second opinion. Alan has given me much needed information, I've been advised 20,30, 50 amp . Thank you for your explanation.
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peewee norfolk Senior contributor
Call Sign : 26-CT-4879 / M7PCA Posts : 192 Times Thanked : 8 Join date : 2023-07-16 QTH or Location : North Walsham, JO02QU Equipment Used : FT1000MP !!!!!!binatone 5*,alinco dx10 135,sirio4000,silver rod,G5RV,beofeng 17 pro max, X30 duel 2m/70cm,full size G5RV, TS120v,soon new toy Age : 57
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 7:11 pm
well i have 30A psu now,ready for the ham licence being hopefull !!!! buy the best you can get as Alan said, because by the sound if it you have the dredded RADIO BUG !!!!! it gets us all in the end....... got mine of Gumtree all working fine even on full power, but never use full power (radio) more qrp see how far i can get any probs or questions put up on here Pauline, they are a real great bunch !!!!! best thing i ever joined,advice,help,pics,chat,contacts etc etc......leaned loads from here reading through the posts, hope to catch you on air one day, good luck and keep on keying that mic !!!!!
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skyrider Major contributor
Call Sign : 26-CT-4654 Posts : 367 Times Thanked : 2 Join date : 2022-09-25 QTH or Location : Preston, Lancs. Equipment Used : UNIDEN 100, midland alan 78 plus multi + mag mount , silver rod Age : 64
Subject: Re: Black out lcd & power fail . Tue Oct 03, 2023 8:13 pm
yes i had a 5 amp with a7 amp surge and Alan on here said it would probably be ok to power a light bulb i needed a proper one so i scanned fleabay and found a QJE 30 amp and i have been happy ever since
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MM0IMC Senior contributor
Call Sign : 108-CT-226 / MM0IMC Posts : 105 Times Thanked : 3 Join date : 2023-03-10 QTH or Location : Ayrshire Equipment Used : Amstrad 901 Sidebander
Subject: Re: Black out lcd & power fail . Mon Dec 25, 2023 10:18 pm
Could it be a bad connection in the power cable/fuseholder, etc? Any of these could cause the radio to power off and back on again...