Brian needs more power... any suggestions ?

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BriansBrain
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Brian needs more power... any suggestions ?

Post by BriansBrain » Thu Jun 11, 2020 6:19 pm

OK :whistle

Brian would like more power :P

He's got his new antenna fitted a 1000W Dominator
Domitaror-2.jpg
At the moment driven at 150W from a Chinese board using a MRF9180 with good results 8-)
I am thinking of a max of 600W (which should give me a theoretical ERP of 1200W) 6db increase :shock:
But I would like to have it variable power output (say 30W > 600W) driving from a 1W exciter :smoke
I have my own idea but... any suggestions ;)
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Re: Brian needs more power... any suggestions ?

Post by Bton-FM » Thu Jun 11, 2020 6:51 pm

2 mrf300 in push pull ;)
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Re: Brian needs more power... any suggestions ?

Post by teckniqs » Thu Jun 11, 2020 8:16 pm

This guy in Spain seems to have a lot of high powered amps for sale:

https://www.ebay.co.uk/sch/fmworldcorp/ ... 7675.l2562
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Re: Brian needs more power... any suggestions ?

Post by Krakatoa » Fri Jun 12, 2020 10:52 am

Being based in Spain I'd try to find some second hand equipment. I've seen some amps and tx's in the buy/sell app "wallapop"
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Re: Brian needs more power... any suggestions ?

Post by BriansBrain » Fri Jun 12, 2020 6:41 pm

Krakatoa wrote: ↑Fri Jun 12, 2020 10:52 am Being based in Spain I'd try to find some second hand equipment. I've seen some amps and tx's in the buy/sell app "wallapop"
Well I had a look but don't forget I'm English in Spain so it all come back to me in Spanish

I could not find anything :?
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Re: Brian needs more power... any suggestions ?

Post by BriansBrain » Fri Jun 12, 2020 6:43 pm

teckniqs wrote: ↑Thu Jun 11, 2020 8:16 pm This guy in Spain seems to have a lot of high powered amps for sale:

https://www.ebay.co.uk/sch/fmworldcorp/ ... 7675.l2562
Yes I have had a look at the stuff he sells and found this... :whistle
PAFM600.JPG
Has anyone used one of these ?

:smoke
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Re: Brian needs more power... any suggestions ?

Post by teckniqs » Fri Jun 12, 2020 11:01 pm

I know someone who has used one of his amps a few years ago but with the more powerful 1,400w device.

....But was only but was running it around 750-1000w maximum because he was a bit concerned about the size of his heat-sink and keeping it cool, but he never had any problems with it and as far as I know he's still got it in perfect working order.
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Re: Brian needs more power... any suggestions ?

Post by BriansBrain » Sat Jun 13, 2020 10:45 am

teckniqs wrote: ↑Fri Jun 12, 2020 11:01 pm I know someone who has used one of his amps a few years ago but with the more powerful 1,400w device.

....But was only but was running it around 750-1000w maximum because he was a bit concerned about the size of his heat-sink and keeping it cool, but he never had any problems with it and as far as I know he's still got it in perfect working order.
Thanks for the useful info :smoke
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Re: Brian needs more power... any suggestions ?

Post by ronald001 » Sat Jun 13, 2020 8:40 pm

Dutchrfshop has 600 watt kits. ( PSU, BLF174XR amp, filter and heatsink )

Excellent Gear, and affordable.

Around 350 euro...
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Re: Brian needs more power... any suggestions ?

Post by BriansBrain » Sun Jun 14, 2020 11:42 am

ronald001 wrote: ↑Sat Jun 13, 2020 8:40 pm Dutchrfshop has 600 watt kits. ( PSU, BLF174XR amp, filter and heatsink )

Excellent Gear, and affordable.

Around 350 euro...
I could not find a 600W kit with a BLF174XR only a 100W & a 1000W boards :?

Also a reason I don't like the Dutchrfshop is even if I change to English on the page I still get hjsyfkdsj stejrhfndgqs language :whistle
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Re: Brian needs more power... any suggestions ?

Post by rigmo » Sun Jun 14, 2020 9:46 pm

BriansBrain wrote: ↑Thu Jun 11, 2020 6:19 pm

At the moment driven at 150W from a Chinese board using a MRF9180 with good results 8-)
I am thinking of a max of 600W (which should give me a theoretical ERP of 1200W) 6db increase :shock:
But I would like to have it variable power output (say 30W > 600W) driving from a 1W exciter :smoke
I have my own idea but... any suggestions ;)
can be arranged---
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Re: Brian needs more power... any suggestions ?

Post by ronald001 » Mon Jun 15, 2020 8:05 am

BriansBrain wrote: ↑Sun Jun 14, 2020 11:42 am
ronald001 wrote: ↑Sat Jun 13, 2020 8:40 pm Dutchrfshop has 600 watt kits. ( PSU, BLF174XR amp, filter and heatsink )

Excellent Gear, and affordable.

Around 350 euro...
I could not find a 600W kit with a BLF174XR only a 100W & a 1000W boards :?

Also a reason I don't like the Dutchrfshop is even if I change to English on the page I still get hjsyfkdsj stejrhfndgqs language :whistle
Send Mauri an email - these kits are not on his website.
I guess you can contact RFhead on this forum aswell - this guy can build you anything
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Re: Brian needs more power... any suggestions ?

Post by fmuser877 » Mon Jun 15, 2020 9:45 am

are you getting over the hill any better?
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Re: Brian needs more power... any suggestions ?

Post by BriansBrain » Mon Jun 15, 2020 11:47 am

fmuser877 wrote: ↑Mon Jun 15, 2020 9:45 am are you getting over the hill any better?
A little bit :tup

It's only Arguineguin that gives me a problem, all the areas are covered fine.
Brian-Arguineguin-Terrain.jpg
South GC Hillshade.jpg
:tup
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Re: Brian needs more power... any suggestions ?

Post by rigmo » Thu Jun 18, 2020 5:42 pm

300w 600w?
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Re: Brian needs more power... any suggestions ?

Post by BriansBrain » Thu Jun 18, 2020 5:50 pm

rigmo wrote: ↑Thu Jun 18, 2020 5:42 pm300w 600w?
Like I said above :smoke

I am thinking of going 600W (which should give me a theoretical ERP of 1200W) 6db increase :tup
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Re: Brian needs more power... any suggestions ?

Post by Tec1 87.5fm London » Thu Jun 18, 2020 6:12 pm

I can do 800w Box for ..£900 Mate
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Re: Brian needs more power... any suggestions ?

Post by teckniqs » Thu Jun 18, 2020 6:53 pm

BriansBrain wrote: ↑Thu Jun 18, 2020 5:50 pm
rigmo wrote: ↑Thu Jun 18, 2020 5:42 pm300w 600w?
Like I said above :smoke

I am thinking of going 600W (which should give me a theoretical ERP of 1200W) 6db increase :tup
Why not just go for the maximum power your aerial can take and just go for the full 1,000watts?

....The price difference of the more powerful amps compared to the 600w version is so minimal, you might as well just maximise!
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Re: Brian needs more power... any suggestions ?

Post by Tec1 87.5fm London » Thu Jun 18, 2020 11:42 pm

:tup
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Re: Brian needs more power... any suggestions ?

Post by rigmo » Fri Jun 19, 2020 9:38 pm

N type support max 1kW its not recommended to operate on the edge... min for 1kW need 1/2 coax - LMR600 or greter .. coax up to 10m length !
I like for coax LMR400 10m 650-800w
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