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T41 BPF 6m confusion

Robert Luken W3RDL All Messages By This Member #32960 I started to wind the coils for the 6m band and am confused about L601, L603, and L605. The directions say L601 and L605 are 39nH, 5" 24AWG, 5 turns on a 1/8" drill bit. However, L603 is 24nH, 4" 24AWG, 7 turns on a 1/8" drill bit. How can 7 turns require less wire than 5 turns and how can 7 turns have less inductance than 5 turns? Bob W3RDL -- This email has been checked for viruses by Avast antivirus software. www.avast.com
D Solt All Messages By This Member #32963 Bob, Attached is a report showing what I did on 6M.? See the chart on pg 2. dave, n3ds toggle quoted message Show quoted text On Thu, Feb 27, 2025 at 9:10?AM Robert Luken W3RDL via <now.w3rdl=[email protected]> wrote: I started to wind the coils for the 6m band and am confused about L601, L603, and L605. The directions say L601 and L605 are 39nH, 5" 24AWG, 5 turns on a 1/8" drill bit. However, L603 is 24nH, 4" 24AWG, 7 turns on a 1/8" drill bit. How can 7 turns require less wire than 5 turns and how can 7 turns have less inductance than 5 turns? Bob W3RDL -- This email has been checked for viruses by Avast antivirus software. 20240827 T41 Bandpass Filter Report.pdf 20240827 T41 Bandpass Filter Report.pdf 20240828 T41 Bandpass Filter 60dB Plots.pdf 20240828 T41 Bandpass Filter 60dB Plots.pdf 20240820 T41 Lowpass Filter Report n3ds.pdf 20240820 T41 Lowpass Filter Report n3ds.pdf
K9HZ All Messages By This Member #32983 Yeah that's probably wrong. See the instructions. It follows Olivers report. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton – J68HZ Soufriere, St. Lucia W.I. Rent it: www.VillaGrandPiton.com Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. email: bill@... toggle quoted message Show quoted text -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Robert Luken W3RDL via groups.io Sent: Thursday, February 27, 2025 8:10 AM To: [email protected] Subject: [SoftwareControlledHamRadio] T41 BPF 6m confusion I started to wind the coils for the 6m band and am confused about L601, L603, and L605. The directions say L601 and L605 are 39nH, 5" 24AWG, 5 turns on a 1/8" drill bit. However, L603 is 24nH, 4" 24AWG, 7 turns on a 1/8" drill bit. How can 7 turns require less wire than 5 turns and how can 7 turns have less inductance than 5 turns? Bob W3RDL -- This email has been checked for viruses by Avast antivirus software. www.avast.com

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