[Elecraft] Re: S meter operationg ...
George, W5YR
[email protected]
Fri May 3 11:59:01 2002
Not necessarily recommended as a "mod" but in olden times before CW and AGC
co-existed, it was not uncommon to place back to back parallel diodes
across the audio output line to the headphones to limit the sound level.
Surely there are more elegant and modern ways to do this now.
73/72/oo, George W5YR - the Yellow Rose of Texas
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771 I-LINK 11735
Icom IC-756PRO #02121 Kachina 505 DSP #91900556 Icom IC-765 #02437
Eric Swartz WA6HHQ - Elecraft wrote:
>
> Hi Larry,
>
> Actually there are a couple of very good reasons for turning off the RX AGC on
> occasion. Many operators prefer to use the manual RF (IF) gain control with AGC
> off when listening to weak signals. This prevents larger signals within a few
> 100 hz from pumping the AGC and masking the weak signal. The filter between our
> ears does wonders for pulling out the weak ones this way. Also, when local noise
> (thunder crashes, pc harmonics etc.) is masking a weak signal, turning off the
> AGC can mean the difference between solid copy and nothing.
>
> Of course, its up to the operator and their lightening fast reflexes to protect
> their ears from overload with the RF gain control! (Or they will certainly
> suffer the rock and roll symptom you alluded to..)
>
> 73, Eric WA6HHQ