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Author Topic: swr directional coupler  (Read 5337 times)

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Offline p.larnerTopic starter

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swr directional coupler
« on: February 02, 2024, 12:10:07 pm »
I see a few swr meter couplers  for hf,most use two torroid coils,both of mine have more,my diamond hf unit has 4 just for hf,the uhf coupler is simmilat to a bird type asensor,why the different number of coils used,apart from cost?what is best 2 or 4?.
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Offline A.Z.

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Re: swr directional coupler
« Reply #1 on: February 02, 2024, 08:44:24 pm »
did you ever stop for a split second, think, and try to understand HOW those couplers work ? Or are you just trying to raise waves around :P ?
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Offline RFDx

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Re: swr directional coupler
« Reply #2 on: February 02, 2024, 09:07:40 pm »
Show a picture of the HF unit.
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Offline A.Z.

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Re: swr directional coupler
« Reply #3 on: February 03, 2024, 07:53:24 am »
« Last Edit: February 03, 2024, 07:57:10 am by A.Z. »
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Offline p.larnerTopic starter

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Re: swr directional coupler
« Reply #4 on: February 03, 2024, 10:28:26 am »
Quote from: A.Z. on February 03, 2024, 07:53:24 am
oh, he just refrains it over and over

https://www.eevblog.com/forum/rf-microwave/swr-bridge-re-use-repair/msg5313140/#new

https://www.eevblog.com/forum/rf-microwave/coil-winding/msg5300707/#new

apparently w/o even reading the replies
snarkey comments asside!,i cant yet show the diamond hf unit as its fitted into an atu at the moment,i just wanted to know why some units use 4 coils some just one and others 2 coils,derogatory/snarkey comments is not an answer!.
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Offline tggzzz

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Re: swr directional coupler
« Reply #5 on: February 03, 2024, 01:56:22 pm »
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There are lies, damned lies, statistics - and ADC/DAC specs.
Glider pilot's aphorism: "there is no substitute for span". Retort: "There is a substitute: skill+imagination. But you can buy span".
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Offline A.Z.

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Re: swr directional coupler
« Reply #6 on: February 03, 2024, 02:54:58 pm »
*SIGH* (notice how he [mis]quoted my message :P)

« Last Edit: February 03, 2024, 02:56:56 pm by A.Z. »
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Offline p.larnerTopic starter

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Re: swr directional coupler
« Reply #7 on: February 08, 2024, 10:21:56 am »
heres a pic of the hf coupler,as asked for.
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Offline Kean

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Re: swr directional coupler
« Reply #8 on: February 08, 2024, 10:52:46 am »
Amazing... his soldering is consistent with his typing
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