Re: [BVARC] Please explain this end fed antenna

2024-05-07 Thread Gary Sitton via BVARC 
I agree on a 49:! Unun for HWEF use. For 1.8 mhz special care should be 
taken in the design.

G.

On May 7, 2024 8:48:02 PM Michael Shanks via BVARC  wrote:
I do believe it would be best to go to a 64 to 1 ballon I believe it’s 64 
to one I could be wrong rather than the 49 to one for that wire if you got 
the space try it I have


Sent from my iPhone


On May 7, 2024, at 8:24 PM, Michael Shanks  wrote:
If I remember correctly, my NF half wave for 180 was 262 with a 49 one 
ballon about 20 foot to 37 foot up in the air worked well with that much 
wire in the air. You’d be surprised what you can hear.


Sent from my iPhone


On May 6, 2024, at 7:08 PM, Gary Sitton via BVARC  wrote:
Also, if the main portion isn't well above ground, you'll need to make the 
length greater to account for the capacitive effect of the ground itself. L 
configurations are very effective but avoid the inverted V scheme.

G.

On May 6, 2024 12:58:52 PM Gary Sitton via BVARC  wrote:
Clue: HWEF (half wave end fed) so half of160 meters is 80 meters or about 
250 feet!

Gary K5AMH


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Re: [BVARC] Please explain this end fed antenna

2024-05-07 Thread Michael Shanks via BVARC 
I do believe it would be best to go to a 64 to 1 ballon I believe it’s 64 to one I could be wrong rather than the 49 to one for that wire if you got the space try it I haveSent from my iPhoneOn May 7, 2024, at 8:24 PM, Michael Shanks  wrote:If I remember correctly, my NF half wave for 180 was 262 with a 49 one ballon about 20 foot to 37 foot up in the air worked well with that much wire in the air. You’d be surprised what you can hear.Sent from my iPhoneOn May 6, 2024, at 7:08 PM, Gary Sitton via BVARC  wrote:



Also, if the main portion isn't well above ground, you'll need to make the length greater to account for the capacitive effect of the ground itself. L configurations are very effective but avoid the inverted V scheme.G.




On May 6, 2024 12:58:52 PM Gary Sitton via BVARC  wrote:

Clue: HWEF (half wave end fed) so half of160 meters is 80 meters or about 250 feet!Gary K5AMH 

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Re: [BVARC] Please explain this end fed antenna

2024-05-07 Thread Michael Shanks via BVARC 
If I remember correctly, my NF half wave for 180 was 262 with a 49 one ballon about 20 foot to 37 foot up in the air worked well with that much wire in the air. You’d be surprised what you can hear.Sent from my iPhoneOn May 6, 2024, at 7:08 PM, Gary Sitton via BVARC  wrote:



Also, if the main portion isn't well above ground, you'll need to make the length greater to account for the capacitive effect of the ground itself. L configurations are very effective but avoid the inverted V scheme.G.




On May 6, 2024 12:58:52 PM Gary Sitton via BVARC  wrote:

Clue: HWEF (half wave end fed) so half of160 meters is 80 meters or about 250 feet!Gary K5AMH 

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[BVARC] FW: Announcing Bird's New Compact USB Vector Network Analyzers

2024-05-07 Thread John Parmalee via BVARC 
 

 

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[BVARC] Chair mat for free

2024-05-07 Thread Scott Medbury via BVARC 
I have an office chair mat that is no longer needed - FREE!

Let me know if you would like it off reflector and I can bring to the
Thursday meeting so it can go home with you.

73 ... Scott KD5FBA

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