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   Home   Help Search  
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Author Topic: Mirage B215G  (Read 5319 times)
G7CNF
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« on: April 14, 2005, 02:13:17 AM »

Hi.

I have the above amp with one of the final's self-oscillating and thermal runaway (damaged and nasty semiconductor smells etc). The finals are SRF3417, I cannot seem to dig up any info on these, can anyone point me to a datasheet so I can try and source an equivalent.

Just an equivalent would be nice, but a datasheet would be better. TIA.

73 de Nige. G7CNF
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W1NK
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« Reply #1 on: April 14, 2005, 06:36:22 AM »

I just did a Google search on SRF3417...

Got 11 hits with a few of those offering the transistor for sale...
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G7CNF
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« Reply #2 on: April 14, 2005, 06:46:13 AM »

...do your homework before coming back with the bog standard reply. I have already been there and there are no prices, just requests for further info, and that is from the sites that are not 404.

I asked...

Are there any equivalents or is there a data sheet, sorry but I missed the answer in your reply?

I asked for help, not sarcasm, pal.
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K0BG
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« Reply #3 on: April 14, 2005, 10:28:46 AM »

Here's something you might try. The The SRF3417s are listed in RF Parts' catalog, but are no longer available. If any one knows of a replacement, it's these folks. They might even have a spec sheet for them. They were a great help when I was looking for replacement finals for an old Atlas 210X.

http://www.rfparts.com

Good Luck.

Alan, KØBG
www.k0bg.com
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W1NK
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« Reply #4 on: April 16, 2005, 09:08:18 AM »

Sheesh sorry OM...  

A bit sensitive aren't we?  I wasn't being sarcastic...
Apparently you didn't look far enough, because I also found the same info from RF Parts that Alan quoted.  

Next time I'll "be sure to do (my) homework" before answering you...or maybe, I'll just think twice about trying to help you out.
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G7CNF
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« Reply #5 on: April 16, 2005, 10:52:26 PM »

@W1NK.

Perhaps I was a little over sensitive? Sad Regretfully keyboards are not very good at reflecting the emotion of the moment, the way the voice does, and I guess it came out all wrong, sorry for that. Funny how some missed punctuation changes the tone Wink

100 lines, "I will read my reply VERY carefully before submitting....."

I also found the same information that you and Alan speak of, but it is of little assistance in this situation as I am looking for hard information, not links that will eventually lead nowhere. The RF parts site is excellent, I agree, but it still doesn't give me a clue as to the spec's or any real hope of finding them.

73's and sorry for any offence caused.
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N7SWW
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« Reply #6 on: March 29, 2006, 09:50:07 PM »

Well I have had the same problems you and maybe more of us have had trying to find Direct replacement parts for the Mirage 1016G or the 1018G the part # from RFParts is MRF247 and here is a URL to the Data Sheet for the new part # http://www.datasheetcatalog.com/datasheets_pdf/M/R/F/2/MRF247.shtml. I hope this help anyone new looking for the same information. I have not been able to find the Data Sheet for the old SRF3417 Transistor Both the new and the old Transistors are made by Motorola 73 Brad
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W2RAC
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« Reply #7 on: September 20, 2007, 10:19:58 PM »

The SRF3417 crosses to MRF247 then to MRF245 also 2SC2782 or SD1477. The SD1477 being the higher output transistor.

Richard
W2RAC
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VK4KDD
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« Reply #8 on: October 11, 2007, 11:08:40 PM »

The MRF 247 is not a replace ment for the SRF3417.
I have changed the transistors and get only 30% of the power out with a huge mismatch.

These guys from RF parts haven't done their home work.

I am led to believe that Mirage is selling these transistors for a small fortune.

So there you go, this is a dead end.
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WA6RNL
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« Reply #9 on: October 25, 2007, 04:15:41 AM »

I have 6 SRF3417 NOS if there is any interest. I was the rf amp design engineer for KLM in 1989.
Regards,
Bill
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WB5DEQ
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« Reply #10 on: January 31, 2008, 03:16:42 PM »

I have the full schematic for the Mirage B215g 2 meter amp, but I would like to find someyone that has the componet layout.  I will be glad to share the schematic
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WB5DEQ
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« Reply #11 on: January 31, 2008, 03:20:25 PM »

For William Taylor:

I am interested in the transistors you have.  

Call me collect 405 324-6554

Ben Roy
405 324-6554
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WB5DEQ
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« Reply #12 on: January 31, 2008, 03:23:20 PM »

WA6rnl  please call me

interested in your final transistors for B215g amp

Ben

Wb5deq
405 324-6554
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N5GE
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« Reply #13 on: February 16, 2008, 07:28:31 PM »

I would be interested to know the part number of the GaAs FET Preamp device shown on the schematic you have for the B215G.

Thanks,

Tom N5GE
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N4JOH
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« Reply #14 on: August 25, 2009, 04:48:01 PM »

http://www.1sourcecomponents.com/partinfo/SRF3417.htm
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