Thanks Raj for your help! I keep R60 installed as I have some electrets I might want to use. I have to say a compressor like this Vogad really helps. As Barry suggested it fits well with the ubitx. It makes a big change with the ILER QRPs too.
Il 25/dic/2018 15:51, "Raj vu2zap" <
rajendrakumargg@...> ha scritto:
Should be OK!
Tomstone R60 and connect direct if you don't want backward
compatability
with the original mic provided.
At 25-12-18, you wrote:
Should be the same value of C60
or is it fine also a lower value 0.47uf?
Il 25/dic/2018 15:05, "Raj vu2zap"
<
rajendrakumargg@...> ha scritto:
- Change to 1uF .
- At 25-12-18, you wrote:
- 47uF rated at 35v
- Il 25/dic/2018 13:59, "Raj vu2zap"
<
rajendrakumargg@...> ha
scritto:
- electrolytic cap (the positive towards the ubitx)
what is the value ?
At 25-12-18, you wrote:
Actually when it becomes stuck if I wait let's say 20seconds then it
works again.
Il 25/dic/2018 12:42, "Raj vu2zap"
<
rajendrakumargg@...> ha scritto:
- Check voltages in audio stage and vogad when the audio is gone. That
should tell you
- where to look!
- At 25-12-18, you wrote:
- 12vdc from the battery, but after a resistor and the 7805 is 5vdc.
- Il 25/dic/2018 11:37, "Raj vu2zap"
<
rajendrakumargg@...> ha scritto:
- What is the supply voltage for the VOGAD board ?
- At 25-12-18, you wrote:
- >Hi all, I have tested a mic compressor based on the VOGAD SL6270C
(same schematics of its datasheet), and it works very well on the ILER
QRPs. However when connected to the ubitx something weird happens. It
works the first time I push to talk, I can talk also 5 minutes, and no
problem, BUT when I release the PTT and then press again, it does not
transmit anything. I did not remove R60 and put an electrolytic cap (the
positive towards the ubitx) in the cable connecting the VOGAD and the
ubitx. The VOGAD is always powered on via a battery or the same power
supply and is DC isolated from the Ubitx. In fact the interconnecting
cable also has an isolating transformer to avoid any possible ground
loop. Should I really remove R60? Should I remove the DC power of the
VOGAD each time I receive? Or should I simply add some polyester caps in
parallel at the mic input?
