Re: [Elecraft] K3 AGC dead spot

2010-10-21 Thread Chuck Shefflette
Guy, Actually, the RF gain control does have an affect on the analog, as does the AGC. There are 2 types of AGC in the K3, the first is the more obvious that is controlled by the AGC Slow/Fast/Off and the second is a hardware AGC that protects the A/D converters. The "normal" AGC is summed with t

Re: [Elecraft] K3 AGC dead spot

2010-10-21 Thread Mike
Don, I have 1.3.10.15, and in fact had done a calibration using the XG2 with it. Still waiting to hear why Dale recommended factory defaults. He should be getting to the office soon. I assume (yeah I know) when using the XG2, it doesn't matter which of the 3 freqs I use. 73, Mike NF4L

Re: [Elecraft] K3 AGC dead spot

2010-10-21 Thread Don Wilhelm
Mike, Recently a bug was found with the RF Gain Calibration routine in K3 Utility did not properly save the new data. If you were not using the very latest K3 Utility, that would explain many anomalies. Moral - download the latest K3 Utility and try again. 73, Don W3FPR On 10/21/2010 8:53 A

Re: [Elecraft] K3 AGC dead spot

2010-10-21 Thread Mike
I understand that the knob labeled RF doesn't really control RF gain, but since Elecraft labeled it that way, I think it's better to reference it that way. I have an XG2, and had done the RF gain calibration using it. Dale recommended doing it using the factory defaults. I'm waiting to hear bac

Re: [Elecraft] K3 AGC dead spot

2010-10-21 Thread Guy Olinger K2AV
The thing to note here, this ain't your daddy's analog radio, the only actual "stage gain" adjustments you have are ATT and PRE. The rest is all in the numbers, as the front panel knobs are just numerical advice to the firmware. They don't directly control anything. What needs to happen is a cal

Re: [Elecraft] K3 AGC dead spot

2010-10-21 Thread Mike
Thanks, Vic. Per Dale's suggestion I did a calibration using factory defaults, and the dead spot is gone, and the S-meter is back to rising with a decrease of RF gain. Dagnab it. 73, Mike NF4L On 10/20/2010 11:50 PM, Vic K2VCO wrote: > My guess is that you need to do the RF Gain Calibrat

Re: [Elecraft] K3 AGC dead spot

2010-10-20 Thread Greg
Also check you CONFIG SMTR MD. May be on ABS vice NOR?? 73 Greg On 10/20/2010 8:50 PM, Vic K2VCO wrote: > My guess is that you need to do the RF Gain Calibration procedure with the K3 > utility. If > you have an XG1 or XG2 you can use it as a calibrated source, or if not you > can tell the

Re: [Elecraft] K3 AGC dead spot

2010-10-20 Thread Vic K2VCO
My guess is that you need to do the RF Gain Calibration procedure with the K3 utility. If you have an XG1 or XG2 you can use it as a calibrated source, or if not you can tell the utility to use the factory default settings. On 10/20/2010 8:13 PM, Mike wrote: > Tonight I noticed that from about

[Elecraft] K3 AGC dead spot

2010-10-20 Thread Mike
Tonight I noticed that from about 2:00 to 2:30 on the RF gain encoder, the receiver goes dead. It's not dependent on the THR or SLP settings which I adjusted to match some advice given here short time past. I also realized my S-meter doesn't rise as the RF gain is reduced. I like that, but I