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Radio1950 · 23rd Mar 2019, 1:41 am

Hi Julian,

I am using a Siemens D2055 SLM on the bench at present for coms receiver IF troubleshooting.
Very useful devices, and with a large easy to read level meter.

Although it is nominally 75 ohm input (inter alia), the mismatch loss 75 to 50 ohms and vice versa is only 0.19 dB, and can be allowed for if required, which is almost never in practice.

As Wrangler has said, we, over here in Australia, also just referred to the input balanced connector as "Siemens 3 pin".
For normal unbalanced work, I have made up some coaxial adaptors, S3Pin plug to BNC50 socket.

If ever you have a digitised copy of your handbook, may I please have a copy?

23rd Mar 2019, 1:41 am	#10
Radio1950 Hexode Join Date: Apr 2017 Location: Buderim, Queensland, Australia. Posts: 428	Re: Siemens D2155 Pegelmesser Hi Julian, I am using a Siemens D2055 SLM on the bench at present for coms receiver IF troubleshooting. Very useful devices, and with a large easy to read level meter. Although it is nominally 75 ohm input (inter alia), the mismatch loss 75 to 50 ohms and vice versa is only 0.19 dB, and can be allowed for if required, which is almost never in practice. As Wrangler has said, we, over here in Australia, also just referred to the input balanced connector as "Siemens 3 pin". For normal unbalanced work, I have made up some coaxial adaptors, S3Pin plug to BNC50 socket. If ever you have a digitised copy of your handbook, may I please have a copy?