Antenna Noise
Bridge kit
|
Cambridge Kits
|
|
|
| Poor reports ? |
| Antenna Fault ? |
| Traps off-tune ? |
| Storm Damage ? |
|
|
Check FAST with an
ANTENNA NOISE BRIDGE,
Measure RESONANCE 1-160 MHz
and RADIATION RESISTANCE 2-1000 ohms (50 ohms mid-scale) without transmitting,
no 10 second limit, measure inside and outside the amateur bands, find
where it is 50 ohms, get accurate answers directly, no confusion with harmonics,
no frequency pulling, also adjust your ATU, measure phasing lines, RF resistance
and hence Q of loading coils, preamplifier matching or use it as a noise
generator, transceiver protected, needs 9V dc or internal battery, 4x7x13
cm, 250 g.
|
"delightful little unit ... most useful", Radio Communication.
|
|
"you have saved me hours", LC in Tonbridge.
|
|
"worked first time and accurately", FJ in Hayes.
|
|
"shown up a fault I never suspected", PJF in Washington, Co.
Durham.
|
|
"very good value ... essential tool", Practical Wireless.
|
|
"still using after 15 years", AK, Japan.
|
The kit includes all parts, case, screws, wire etc, coils are pre-wound,
and the detailed assembly and operating instructions
include a circuit diagram and description.
The kit includes a ready-cut piece of copper laminate
and full size foil pattern for easy drawing,
etching and drilling of the circuit board.
The circuit board is 104 mm long, single sided with wide tracks
and generous spacings
as shown here
|
and the kit includes ordering details for
etch resist pen and ferric chloride.
|
|
|