Hello Fabio
I have two beverages that are somewhat close to my TX antenna. One
had about 75 mw on it during TX while beverage #2 had about 1 watt! This
is enough power to cause damage to preamps, so I made two power limiters
and now the inputs are clipped at about 0 dBm. All it took was two
transformers and two diodes in a box. Do you know what the power level
is on your beverage during transmit periods? Really high power levels
could burn up the transformers. Disconnecting the antenna is a good
idea too.
Dave K1WHS
On 3/4/2017 9:53 AM, Fabio IZ4AFW / NZ1W wrote:
Hi guys,
I was thinking of a possible firmware improvement related to the
carrier operated relay.
I use my radio on a small lot and recently I added a short beverage
antenna for low-bands receiving. My main activity is single-op contesting.
Because of the interaction between the tx antennas and the beverage, on
some bands I have the COR (carrier operated relay) activating when I use
high power.
I know the good solutions, but my point is different.
As I have the COR activating only when the RX Ant input is selected, why
doesn't the K3 firmware disable it when pushing the ptt?
In fact, when I push the ptt I don't need the RX-ant part to be active,
as I'm transmitting, and -at least in my setup- I have no other
rigs/devices that need that input (I mean, no in-band receivers and so on).
Instead of using external relays (ptt-activated) that cut out the rx
input when I am transmitting, why the K3 firmware just doesn't disable
the RX ant input on its own (and re-enables it if needed when releasing
the ptt)?
Maybe I'm missing something here, or that could be a nice improvement
for a next firmware release.
Thanks for any comment,
Ciao 73
Fabio
IZ4AFW / IO4W / NZ1W
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