[1000mp] Sticking ant relays

[Kristijan Persic,9A4WY]

Csaba...
please disconnect all cables from PA and leave connected only TRX inline 
with antenna.
You have to be sure where the problem is...in TRX or PA. Ameritrons has 
cheap relays in amplifiers, especially in older serial numbers.That 
could be a problem.
Test it few days to see what will happen...
73..Kiko,9A4WY

On 16.4.2018. 22:16, HA3LN wrote:
> Deal All,
>
> I'm wondering whether if any of you faced this before.
>
> I have a FT1000MP MkV Field with an AL-811 with 500W out.
>
> On the cases when the radio switches back from TX to RX it sounds like 
> the
> MP's ant unit relay sticks and I can hear barely/nothing at all the 
> band. The receiver comes back only after a certain amount of time or 
> if I step the foot-switch again couple of times.
> If I run barefoot 100W nothing similar happens. I don't have opto 
> decoupled TX GND/relay switching, only directly connected with RCA's.
>
> I suspect the RF comes back somehow or maybe the PA ant relay might be 
> guilty.
> Do you think is this the relay or the switching transistor on the ant 
> unit board?
> Any other ideas?
>
>
> Thanks a lot in advance.
>
> 73!
> Csaba  HA3LN
> http://ha3ln.hu/
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