HF Band-pass Filters 80m, 40m, 20m, 15m, 10m

£99.99 inc. tax
Product Code: xKRSMdR Units in Stock: 5

HF Band-pass Filters 80m, 40m, 20m, 15m, 10m
Made to order please allow 2 to 3 weeks for delivery from your order date.
£99.99 Price is for one HF Band-pass Filter

Do your multiple-transmitter Field days or contest efforts suffer from interference?

Then HF Band-pass filters is the solution to the problem.
Only allowing the band of operation to pass through the filter & rejecting out of band Signals from a nearby station operating on other HF Bands.
Thus eliminating phase-noise interference when transmitters & receivers are operated on adjacent bands in close proximity to each other.

The Filters are a 3 pole Butterworth design, Housed in a diecast metal enclosure for optimium RF Screening, Utilising 500v rated Silver Mica Capacitors for better performance & frequency stability avoiding frequency drift & not affected by temperature changes inside & outside of the filter enclosure.

Below Filter characteristic of the 80m HF Band-pass filter, Showing Transmission loss in -db of attenuation outside of the filters pass band.


These HF Band-pass filters are designed to a transmitter power output rating of 100W, Exceeding this power level will cause damage to the HF Band-pass filter.
If you use these filters with a higher transmission output power ( ie with a Linear Amplifier) Then we advise that you connect them before the Antenna input of your Linear Amplifier to avoid damage of the filter.

When using an ATU with the filter, Be sure to connect the filter also before the input of your ATU. To avoid your ATU trying to tune up the filter as well as your Antenna.

When ordering please state the HF Band or bands you require filters for.

3 Pole Butterworth design Hf Band-pass filters
For 80m, 40m, 20m, 15m, 10m,
iron powder core inductors
500v rated Silver Mica Capacitors
Built on a copper clad pcb
TX Power rating 100W
Connectors so239
Feedline connection passive
Enclosure Size L120mm x W65mm x D40mm
Weight 262.5g
Made in the UK by M1ECC-Antennas

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