Hi
SPE using a smal coax RG58 as capacitor in the RF detection / SWR system
I seen this melted!!! This made SWR trip & go bananas….
Open the amp and check it
Just my two cent…..
Best Regards,
Stein-Roar Brobakken
srb@lb3re.com
LB3RE LC0X K3RAG
Skype: lb3re.rag
> 30. okt. 2021 kl. 02:42 skrev Adrian <vk4tux@gmail.com>:
>
> Sounds like you are still unsure, and that is a guess. You said the swr is
> 1.4:1 , I guess this what the SPE shows with SPE in standby, and txcr keyed ?
>
> If so when switched to operate, you should be able to gradually increase
> drive power form a very low level and raise until you see the output power
>
> level where SPE indicated swr suddenly increases and trips the amp? Or is the
> alarm instant regardless low low drive is in low power profile.
>
> Test in FT8 in ssb is one good way to go from 0 output & up using audio level
> adjustment modulating the drive.
>
> The SPE can be controlled from a few watts output smoothly through to the
> point where issues occur.
>
> If the swr holds good until a output power level point where it fails, then
> it provides more clues to the problem.
>
> An instant swr trip to standby regardless of drive level however low or 0, is
> another issue.
>
>
> vk4tux
>
>
>> On 30/10/21 09:54, WW3S wrote:
>> With the help of #1 son, during a lull in the monsoons, we isolated it to my
>> KK1L 2x6 box, mounted on the outside of the house. Sounds like maybe some
>> relays clicking and clacking, probably rfi coming thru the control cables,
>> despite clamp on toroids everywhere and the cables wrapped numerous times
>> thru double ferrite cores. I do have a couple of unused ports, I wonder if
>> it will help if I terminate those with dummy loads?
>>
>> Sent from my iPad
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