[Mich VHF UHF Society] 28 VDC Type N coax relay for sale

Roger Cox rgcox2 at gmail.com
Wed Sep 24 19:18:55 CDT 2014


In my process of purchasing relays on eBay to build a couple 
mast-mounted preamps, I bought one that wasn't what I thought it was.  
If anyone is interested in this before I put it back on eBay, I am 
offering it for $40.  Here are the details:

RelComm model RDL-SR014
SPDT Type N coaxial latching relay
28 VDC coil
Rated DC-13 GHz
DC-3 GHz  1.25:1 max VSWR, 0.25 dB insertion loss, 70 dB isolation
3-5 GHz  1.45:1 max VSWR, 0.30 dB insertion loss, 60 dB isolation
5-11 GHz, 1.60:1 max VSWR, 0.50 dB insertion loss, 50 dB isolation
11-13 GHz, 1.70:1 max VSWR, 0.65 dB insertion loss, 50 dB isolation
RF Power (average): 100 watts to 6 GHz, 50 watts to 13 GHz
make before break (3 ms overlap)
switching voltage: 21 VDC
Operating voltage: 24-32 VDC
switching time: 20ms


I have a data sheet from the manufacturer and photos if anyone is 
interested.  I tested S21 at work, and measured 0.03 dB at 50, 144 and 
432 MHz, 0.1 dB at 1296 for common to the switched port. Isolation to 
the unswitched port was 100-120 dB.

Roger W8IO
Spring Lake, MI



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