M1AVV

Simon: Barrow-in-Furness

Radio At Home




Icom IC-7000

My main radio at home is an Icom IC-7000. This does HF, 6m, 2m and 70cm, all modes. I'm using an LDG AT-7000 auto tuner between it and the HF aerials. This tuner is controlled by the Icom.

LDG AT-7000

Rear view of the tuner, there's nothing on the front.
This is all powered by a Samlex SEC-1223 23A switch-mode PSU

Samlex SEC-1223

The HF aerials are a Solarcon A-99 vertical and an 8 metre sloping wire. The wire is better below 18 MHz and the length was only chosen because it's long enough to go from the top of the pole to the end of the yard.
The wire is matched to 50 ohm coax with a 16:1 transformer (. This makes the SWR 5:1 or better from 80m through to 6m. This is good enough for the AT-7000 tuner to handle.

Matching transformer

The A-99 is tuned for 27 MHz and the SWR is below 4:1 from 18 - 30 MHz (there are some other lower resonant frequencies as well as 27 MHz, even though it's just an end fed half wave. You don't get these with other half wave CB aerials so it must be the different matching transformer used in the A-99).

Aerials at home

For 2m and 70cm I'm using a Watson W300 dual band colinear on the chimney. The folded dipole is for the FM broadcast band.