Collins
Collins 51S-1 Receiver, 7 KHz AM Mechanical Filter Type F-500-Y-70, P/N 526-9421-00 NOS
- MPN:
- 526 9421 00
- Condition:
- New
- Shipping:
- $9.00 (Fixed Shipping Cost)
Frequently bought together:
Description
Collins 51S-1 Receiver, 7 KHz AM Mechanical Filter Type F-500-Y-70, P/N 526-9421-00 NOS
This is the rarer wider 7 kHz variant of the 6 KHz Filter in pristine NOS condition
NOS Collins F-500-Y-70 Mechanical Filter P/N 526-9421-00. 500 kHz center, 7 kHz @ 6 dB (19 kHz @ 60 dB) wide AM bandpass filter for Collins 51S-1 general coverage receiver. Excellent shape factor, steep skirts, stable Collins quality. Ideal original replacement or upgrade for superior AM performance. Rare New Old Stock.
Compatible Radios and UsesThis is a 500 kHz center frequency AM/wide bandpass mechanical filter, designed primarily as the AM filter (or optional wide filter) for the Collins 51S-1 general coverage receiver.
It provides wider bandwidth than standard SSB filters in the 51S-1 (which typically uses narrower mechanical filters for SSB/CW). It is also suitable for other Collins equipment or homebrew/vintage receivers needing a wide 500 kHz IF mechanical filter for AM broadcast or general coverage listening with good selectivity.
Specifications
- Center Frequency: 500 kHz.
- Bandwidth: 7.0 kHz nominal @ 6 dB; approximately 19.0 kHz @ 60 dB.
- Type: Symmetrical bandpass mechanical filter (Y case style with flange).
- Design: Multi-resonator (typically 8+ discs in Collins mechanical filters of this era), excellent shape factor with steep skirts compared to LC filters.
- Other Characteristics (typical for this series): Low insertion loss (around 5-10 dB max), good passband flatness, high stability, carrier rejection suitable for AM. Case style Y (flanged).
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