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Author Topic: TL-922A Relay RL-1  (Read 5593 times)
K6AER
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« Reply #30 on: February 22, 2018, 04:54:03 PM »

Anyone know the cost of these relays?
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WA7PRC
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« Reply #31 on: February 22, 2018, 06:47:39 PM »

Anyone know the cost of these relays?
Since they're available ONLY in "1 Form A" (SPST, Normally Open) and "1 Form B" (SPST, Normally Closed), you'l need one of each for one side of an amplifier. It appears the manufacturer (Cynergy 3, link) uses Digi-Key for North America distribution. They want $45.63 EACH for PN FRD12015 (link). So, assuming you go with an inexpensive small reed relay ($5 to $15), you're still spending about $90 for the output switch.
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KI6SZ
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« Reply #32 on: February 22, 2018, 07:01:13 PM »

The T/R relay is a 110 VDC DPDT open frame relay. You can buy  a replacement from Digikey. Not an easy replacement located next to the tank circuit and is accessible only from the bottom of the amplifier but the hold down nut has to be done from the top. It is a PITA to remove. If you have to clean the contacts just replace the relay. Be carful removing the Choke coil.

You can also use the T/R relay from Harbach Electronics for the SB-220 but the wiring locations will be different and a new mounting hole will have to be added.


Some folks might want to put in a QSK relay. Dick Kessler used to make a kit but I think he is out of the TL-922 business now.

This is Don Kessler...  Definitely not out of business...  Kessler Engineering LLC
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K6AER
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« Reply #33 on: February 22, 2018, 09:44:26 PM »

Don,

Great to see you alive and well.

Your phone number? send it to mhiggins@skybeam.com

Mike
« Last Edit: February 22, 2018, 10:03:51 PM by K6AER » Logged
WA7PRC
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« Reply #34 on: February 22, 2018, 10:27:17 PM »

Don,

Great to see you alive and well.

Your phone number? send it to [redacted]

Mike
Requested information researched and supplied:
Anyone know the cost of these relays?
Since they're available ONLY in "1 Form A" (SPST, Normally Open) and "1 Form B" (SPST, Normally Closed), you'l need one of each for one side of an amplifier. It appears the manufacturer (Cynergy 3, link) uses Digi-Key for North America distribution. They want $45.63 EACH for PN FRD12015 (link). So, assuming you go with an inexpensive small reed relay ($5 to $15), you're still spending about $90 for the output switch.
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