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RM ITALY Station 550 Linear Amp, Any body familiar?

2RT307

Sr. Member
Nov 22, 2011
2,324
788
223
Texas
Last I knew KL was RM's designation for their mobile amps and KLV was their Base amp line.The KLV-550 and the Station 550 appear to be the same.

The "V" designates a valve model. We call 'em tubes. :)

73,
RT307
 

Mudfoot

Elmer
Jun 17, 2009
10,870
6,162
698
60
Southeast Ohio
Well, I talked to the guy for a few minutes on SSB and it sounded okay. I finally asked him how much he wanted for it. I coughed a little and felt my ass pucker when he said $450.

He said that's what he paid for it used over a year ago. I told him that he paid to much for it. He got a little bent, but I told him that I will pass.
 

2RT307

Sr. Member
Nov 22, 2011
2,324
788
223
Texas
Well, I talked to the guy for a few minutes on SSB and it sounded okay. I finally asked him how much he wanted for it. I coughed a little and felt my ass pucker when he said $450.

He said that's what he paid for it used over a year ago. I told him that he paid to much for it. He got a little bent, but I told him that I will pass.

I am thinking H and Y was blowing these out recently for less than 400. Probably good to pass on a used one at that price.

73,
RT307
 

TonyV225

W9WDX Amateur Radio Club Member
Apr 18, 2005
5,824
314
143
Wisconsin
I just put my KLV / STATION 550 back to gether Tuesday. Yesterday it needed the 6 position power selector switch replaced.

Never did get the preamp working even changed both the keying type transistors in the circuit and still no preamp but the thing works good as new. Funny thing is I used it on SSB and nobody complained and the said as far as scratchy SSB it was ok so who knows. Its been sitting in the closet so I came across it lastweek and brpught it out and ptdered the parts and the came as I said yesterda or Tuesday so I go her back together now ran it all day and will let it idle tonight and run it today again so I know all is good to go if I post it to sell it which is why I repaired it for yhe most part.
 

Shadow 804

Member
Dec 29, 2016
2
1
13
50
I recently came across one of these for sale. Can any one here tell me the finals in this box ?? I've been trying to look this up but no luck on my search .
Thanks !!

- 8 ZERO 4 - .
 

nomadradio

Analog Retentive
Apr 3, 2005
4,964
6,950
523
Louisville, KY
www.nomadradio.com
No, not "Two Ess Dee".

That would be a jap-standard type number, like Toshiba would use.

But the "SD1407" is a type number used by "ST Micro", major european semiconductor manufacturer.

If the part were marked "D1407" you might find that the "2S" goes in front of it to form the full type number.

But in this case "SD1407" is the entire type number. And that's how a supplier will list it.

Besides, if it were a RF transistor it would be "2SC". The letter "D" instead of "C" would indicate a lower-frequency part, not meant for RF.

73
 
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Joseph Collins

New Member
Apr 7, 2020
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0
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I am thinking H and Y was blowing these out recently for less than 400. Probably good to pass on a used one at that price.

73,
RT307
So iv got a chance on this klv 550 new in box never before used still got the jumper in litle zip bag 400 to much??
 

Tallman

W9WDX Amateur Radio Member, KW4YJ EXTRA class
May 1, 2013
5,123
5,953
573
Louisville, KY
So iv got a chance on this klv 550 new in box never before used still got the jumper in litle zip bag 400 to much??
If they claim to be H&Y that is B.S. They are out of business and are building copied linear amplifiers under the black cat badge. Class "C" junk for sure.
 

dxChat
Help Users
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  • @ ButtFuzz:
    on the connector with the green wire, if you short that to a nearby black wire, the power supply will turn on. (for use as a bench supply or whatever)
  • @ ButtFuzz:
    And IIRC, the purple wire is -12VDC, but that is from memory and it does not serve.
  • @ ButtFuzz:
    So if you need, say, 7v, connect + to the Yellow wire and - to the Red wire.
  • @ ButtFuzz:
    or or you need 9v connect + to the yellow wire and - to the orange wire. note: not all PSU's have the orange wire nowadays, as many manufactures had the voltage regulation on the motherboard, and all the power supply gives is 12 vdc
  • @ BJ radionut:
    Thanks ROB will check it out!~!! got to clean the work bench a little make room for that big case :)