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Hi all,
I have noticed that the ALC Tx meter is (much) less
sensitive in previews 6 and 7. Eg, with the ALC meter barely budging, the output
power (as measured externally and by the Peak Power Tx meter) peaks at around
100W when transmitting into a dummy load. Comparing this to earlier software
versions, ALC more or less peaks at 0dB for the same output power. If I increase
the mic gain in previews 6&7 such that the ALC peaks at 0dB, the Peak Power
Tx meter peaks at 220W and my external meter shows peaks of 150W or
so.
I rechecked the manual (updated to v1.4.4, given
that v1.4.5 is beta) and it advises that the ALC should peak at 0dB.
My question is specifically then has something
changed in the design (and philosophy) behind the ALC reading, such that it
should now indeed barely budge, that I missed or forgot about? I can't check the
release notes as the forum is gone :-(
The above tests were done with the Tx equalizer,
leveler, noise gate, vox, compander & compressor (this is becoming an
impressive list!!) all off. The buffer for audio is 512 and DSP is 2048. VAC is
disabled. I am using a Heil pro-set plus with the microphone (HC5 element)
directly connected to input 3 of the Delta-44.
Thanks,
73 de Joe - AB1DO
Configuration:
Dell Dimension 3000 /w 3GHz P4 + 1GB RAM + XPHomeSP2 SDR-1000 + RFE + 100W PA + USB Adapter Delta-44 + Break-out kit |
