I have a couple of the older versions (MRF6VP41KHR7) that will go up
to 500 MHz.
Now all I need to do is find a piece of copper stock (that doesn't
require a second
mortgage !!) and I'll try them out.
I heard there were some 50A +/- Server supplies around, but I haven't
found one yet.
Should be good for some decent QRO on 144 MHz.
73, Dick, W1KSZ
On Sat, Aug 13, 2011 at 9:13 AM, Mike Tubby <mike@tubby.org> wrote:
> On 13/08/2011 06:38, Roger (sub1) wrote:
>> On 8/13/2011 12:34 AM, MIKE DURKIN wrote:
>>>
>>>
>>>
>>>
>>> So how much already ??
>>>
>> The only prices I could find were on foreign sites, but it "appears"
>> they run about the price of an imported 8877 or between $700 and $800
>> each. At least that's according to what I could find.
>>
>> I'd settle for paralleling a bunch of lesser pricey 3 legged fuses with
>> lots of protection which is essentially what the commercial amp
>> manufacturers have done in the past.
>>
>> 73
>>
>> Roger (K8RI)
>
> I have no pricing on the BLF578XR but new BLF578 (genuine, not Chineese
> copies) were available on ebay.co.uk for GBP £85.00 each... I purchased
> some for my QRO 144MHz amp and they're fine.
>
> The Freescale MRFE6VP61K25H which is a similar device to the BLF578XR is
> available for EUR €239.00 inc. sales tax in Europe (about USD $340.00) each.
>
> There's also a PCB and kit of parts that can be used for the Freescale
> or NXP parts to build a 1KW amp for 144MHz, here at RF Ham:
>
> http://www.rfham.com/index.html?c84.html
>
>
> Mike G8TIC
>
>
>>
>>
>>
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