Hello Mitja and Michael,
I knew the link, but my problem is that at the moment I could only use
Windows (*long* story, I selected a AMD R9 280 to play with
ESX/DirectPath I/O and linux support for AMD R9 sux), so my option to
understand the problem is tied to use SDR Console by sdr Radio and SDR
Angel. I don't know how to "map" rf amp to rx/tx gadgets on the gui.
On SDR Console 2.3 (used for Rx only), I have the following controls:
LNA (0-40dB, defaults to 24dB)
VGA (0-62 dB defaults to 20dB)
Ext Amp (off/On defaults to Off)
Listening to FM broadcast radios, it works if I keep Ext Amp off (it
should be used only in TX, right?). Changing LNA and/or VGA
increase/decrease the received signal and this is fine. Which is the
supposed behavior when I switch Ext Amp on during RECEPTION? Is it okay
that received signal weakens almost to vanish?
I ask this because I would expect no impact since the PA should not be
activated on reception, or am I wrong?
On SDR Angel(used for RX AND TX), same controls and same result on Rx.
When I try to transmit I have a signal, but if I engage the ext amp
almost nothing comes out. I use a dualband/DMR handheld almost one meter
near the HackRF antenna.
I am asking because I would like to know if I need to change just the PA
or also the rf switch are involved. I would order a couple of them (two
amps and two switches) but it seems that the switches are way nastier
than the amplifiers to solder so I would know for sure if the behavior
is related to just the PA being broken or worse.
I fried mine probably using a 1.2m 5/8 mobile antenna too near to the
DMR handheld to receive DMR transmissions.
>By the way, your mail client has done an unneighborly thing in
designating your
>email as multipart/alternative with an empty text/plain section. In
some mail
>clients (and probably the mailing list digest) this makes the body of your
>message appear empty
Interesting reading:
https://stackoverflow.com/questions/8320141/multipart-alternative-subtype-when-client-use-it
Usually I send out messages using Automatic format and my email client is
Thunderbird. This is the first time I get problems using it. If you don't mind
could I send to you a couple of test messages, one encoded in text only and the
other in auto to see what you do receive.
BTW, which email client are you using?
I am not a fan of HTML messages, I do rather prefer old plain text, and my
impression was that it was what I was going to send using Auto on a new (blank
message), more than willing to keep text only as default(and not a double
whatever format), thank you.
Giuseppe Marullo
IW2JWW - JN45RQ
ps: this answer is plain text only, hopefully it will be okay
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