|The filter, FL-52A, ordered from RadioWorld Ltd.|
I got it 3 days after ordering...not bad.
|The IC-718, opened according to the instructions in the handbook.|
|The opening of the board was a little bit tricky.|
|The filter is in place...|
|...and soldered at the other side of the board.|
|Ready! Hopefully things went right.|
After the first hour of testing I had this QSO log:
- The noise level decreases dramatically with a 500hz filter compared to the default 2,1kHz in IC-718. Stations that I could not hear with the wide filter, sound, although weak, chrystal clear!
- Related to that, the well-known AGC(Automatic Gain Control)- problem is not as big issue anymore, since it's now easier to block out strong stations, and thus keep the receiver sensitivite. This, together with the lowered noise floor became an asset in also PSK operation: some of the QSOs in the log above were impossible to work with the wide filter: they were not heard&seen at all!
- Pile-up accuracy! With the narrow filter I can pin-point previous QSOs in order to plan my next shot. Three of the CW QSOs in the log above were worked rather easily in pile-ups.
I'm still a little pistol, with my home made dipoles and stuff. An excited little pistol. Do I dream of 1,5kW linears and yagi towers? Maybe some day, but now, honestly: no!