hf tuning capacitor

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gerald123
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hf tuning capacitor

Post by gerald123 » 03 Mar 2018, 11:31

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hi all hope someone can help me with this....I am in the middle of making a loop antenna..and got this from a ebay can someone tell me witch wires I I attach the coax to ....and are they for tunning diffirent bands on hf..many thanks in advance. as you can see there are four wires. :roll:
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Last edited by gerald123 on 03 Mar 2018, 12:51, edited 3 times in total.

gerald123
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Re: hf tuning capacitor

Post by gerald123 » 03 Mar 2018, 11:33

gerald123 wrote:
03 Mar 2018, 11:31
DSCF4014.JPGDSCF4013.JPGDSCF4011.JPG hi all hope someone can help me with this....I am in the middle of making a loop antenna..and got this from a ebay can someone tell me witch wires I I attach the coax to ....and are they for tunning diffirent bands on hf..many thanks in advance. as you can see there are four wires. :roll:
I hope I have up loaded the photos ok

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Tigersaw
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Re: hf tuning capacitor

Post by Tigersaw » 03 Mar 2018, 13:48

Thats a 3 gang device, you can combine them or use them independently to get the value range you require.
Cant help without knowing the size of your loop, the bands you require and the values of gangs.
I assume its a RX only loop? It will be no good TX unless QRP

If you just want to experiment, just use one of the gangs and see what happens, then a different one, then parallel a couple of them up etc

gerald123
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Re: hf tuning capacitor

Post by gerald123 » 03 Mar 2018, 14:10

can you tell me the mesurments the loop should be for80 40 and 20 metre bands please. thanks for replying.... the loop is for rx only...this is another one that I have
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Tigersaw
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Re: hf tuning capacitor

Post by Tigersaw » 03 Mar 2018, 14:41

Loop size isnt too important for RX, google RX loops there are plenty of examples,
http://ac0c.com/main/page_prior_antenna ... _loop.html shows one of many examples that have been knocked up.

gerald123
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Re: hf tuning capacitor

Post by gerald123 » 06 Mar 2018, 01:11

Tigersaw wrote:
03 Mar 2018, 14:41
Loop size isnt too important for RX, google RX loops there are plenty of examples,
http://ac0c.com/main/page_prior_antenna ... _loop.html shows one of many examples that have been knocked up.
thank you for the link ...verry usefull

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