Posts by is0mpc

Quote from DK5FA

Umbau Nokia - Siemens PA mit BLF 8G22LS-160BV.

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Hello and
sorry for the translator,
After the 1 year stop I took over the famous pa umts this with the two BLD6G22L (the same one that is on the net on numerous posts) to transit on the satellite in datv.
These are the problems I encountered and for which I ask for help:
- By launching the power supply the same power supply sat and went from 28V to 14V, this suggests many things, but by slightly unscrewing the PA circuit the problem was eliminated.
- with the two driving cards (tested in TX alone and therefore working) the PA does not work while remaining cold (I have no suitable measuring instrument to check anything else).
I have not made any other changes other than that of the input and output connectors
I state that the pluto works regularly by doing local tests.
My knowledge is limited to do anything else but it leaves me perplexed that the same identical problems are strangely the same as an identical PA taken to compensate for some electronic problem of the first.
Has anyone had the same difficulties?
Thank you

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Quote from DK5FA

apologies for my writing in translation

After a 1 year standstill, I picked up the famous pa umts with the two BLD6G22L (the same one found on numerous posts on the net) to transit on the satellite in datv.

These are the problems I have encountered and am asking for help:

- Launching power the same power supply would sit and go from 28V to 14V, this suggests many things, but by slightly unscrewing the PA circuit the problem was eliminated.

- With the two driver boards (tested in TX alone so working) the PA does not work, remaining cold (I have no suitable measuring instrument to check anything else).

I have not made any other modifications apart from the input and output connectors

I would like to point out that the pluto works regularly by testing it locally.

My knowledge is limited to do anything else but it baffles me that the exact same problems are strangely the same with an identical PA taken to make up for some electronic problem with the former.

Has anyone experienced the same difficulties?

Thanks

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