EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
RF, Microwave, Ham Radio
»
Which material is the best for VHF (2m)?
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: Which material is the best for VHF (2m)? (Read 1485 times)
0 Members and 2 Guests are viewing this topic.
szoftveres
Regular Contributor
Posts: 126
Country:
Which material is the best for VHF (2m)?
«
on:
September 03, 2022, 05:08:48 pm »
I'm looking for a low loss material for building a receiver balun (hence power handling requirement is zero), with the lowest possible loss.
43 and 61 seem to be the closest but these are still start rolling off at around 2.5MHz. Is there anything better out there?
Logged
A.Z.
Frequent Contributor
Posts: 951
Country:
Re: Which material is the best for VHF (2m)?
«
Reply #1 on:
September 03, 2022, 05:39:20 pm »
you may want to read this
https://owenduffy.net/balun/G1-1-FT140-61/index.htm
for a start
Logged
szoftveres
Regular Contributor
Posts: 126
Country:
Re: Which material is the best for VHF (2m)?
«
Reply #2 on:
September 03, 2022, 10:16:46 pm »
Thanks, this tells me that the 61 material is perfectly fine for this.
Logged
Warpspeed
Contributor
Posts: 45
Country:
Re: Which material is the best for VHF (2m)?
«
Reply #3 on:
September 09, 2022, 01:35:36 am »
It depends on the type of Balun.
If its the transmission line transfomer type, which is most likely at VHF, you might be surprised to discover that higher permeability low frequency material is actually better.
Logged
Kahooli
Contributor
Posts: 12
Country:
Re: Which material is the best for VHF (2m)?
«
Reply #4 on:
October 08, 2022, 02:21:35 am »
both 61 and 43 are perfectly acceptable for a 2M balun. Though I wonder - why not just buy the mini circuits component? or Macom ones? They are <$1
Logged
Hamelec
Regular Contributor
Posts: 158
Country:
Re: Which material is the best for VHF (2m)?
«
Reply #5 on:
October 08, 2022, 08:19:22 am »
Its a question of the power level..
Logged
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
RF, Microwave, Ham Radio
»
Which material is the best for VHF (2m)?
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee