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How to make use of that expensive analyzer you just bought.

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Presentation on theme: "How to make use of that expensive analyzer you just bought."— Presentation transcript:

1 How to make use of that expensive analyzer you just bought

2 Effective RF Suppressors

3 100nh moulded inductor

4 1 uh moulded inductor

5 43 Material Ferrite bead 2643250402 (3 turns)

6 Laird Ferrite Core 28b0375000 (2 turns)

7 Laird Ferrite Core 28b0375000 (3 turns)

8 Laird Ferrite Core 28b0375000 (4 turns)

9 Laird Ferrite Core 28b0375-300 (4 turns)

10 Laird Ferrite Core 28b0562-100 (2 turns)

11 Laird Ferrite Core 28b0562-100 (4 turns)

12 Antenna Relays

13 These are great relays to use if you have the budget for them

14 OK but I like to save $. I want to use one of these relays

15

16 Receive configuration

17 Transmit configuration

18 Return loss (SWR)

19 Compensation for VSWR (2 meters and below)

20 Return loss (SWR) VSWR (return loss) is another problem that gets worse as the frequency increases Uncompensated 5pf added across NO and NC contacts

21 Common port terminated in 50z Common port open One of the biggest issues with these relays at VHF is isolation The highest useful band appears to be 6 meters Isolation

22 Compensation for poor isolation

23 Compensation Compensation allows us to use this relay at 2 meters Isolation (uncompensated) Isolation (compensated with 650 nh) Return loss (compensated with 5pf shunt)


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