6600M TX Relay Question - Same Specs as 6000?

David Salomon

Hi folks -

I have a 6600M on order (and am waiting patiently ... OK, impatiently :-).  This is my first Flex, so please excuse if this question is ignorant.

I have a Dow Key 62-110 coaxial relay that I want to use for switching a receive only antenna.  The antenna goes through a distribution amp because it feeds 4 other radios besides the new Flex.  So I need to switch it out of line just before the distribution amp on transmit.

The specs for the Flex-6000 TR Relays are 40Vdc @ 150mA.  Are the specs for the 6600 the same?  The Dow Key 62-110 is 12Vdc @ 160mA.  Given the lower voltage requirements, is it safe to pull 10mA more current through the TX Relay?  If not, I can always build another lower power relay in front of it, but I'd rather not have 2 relays just to switch the antenna out.

73 - David, AG4F

Tim - W4TME

The specs for the Flex-6000 TR Relays are 40Vdc @ 150mA.  Are the specs for the 6600 the same? 

Yes.

Given the lower voltage requirements, is it safe to pull 10mA more current through the TX Relay?

The 150 mA spec on the relay driver is based on all outputs being loaded equally to the max.
If the other outputs are not used or are not close to 150 mA, the difference can be applied to
the output driving the Dow-Key, to a max of ~500 mA, with only one output active.  I would factor in some headroom just to be safe.

So no problem with 160 mA on one port, if others are less loaded.

David Salomon

Thanks for the quick reply!!

Tim - W4TME

You're welcome.