2.8kHz 8-Pole Roofing Filter for K3 Transceiver.
Elecraft KFL3A-2.8K is available to buy in increments of 1
KFL3A-2.8K Elecraft 2.8kHz 8-Pole Roofing Filter for K3 Transceiver. This filter is the most popular one for SSB use and can be substituted for factory fitted 2.7 KHz filter. Although it is fractionally wider than the 2.7 KHz filter, it has much steeper skirts.
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