Discussion in 'Amateur Radio Amplifiers' started by AA7QQ, Jul 3, 2017.
Just North of $5.25 per food...
If you needed more than ten feet of that...
Most have a minimum cut of 50'.... Sheesh.
Oh well... You were on a roll and then something had to give.
I didn't guess that cable would be the long pole in the tent with this project.
Heck, just buying the coax would cost more than the amplifier pallets.... Oh well, I'll see if I can get some of the highbrow 75 ohm digital coax on Ebay.
I am just shocked that RG302 cost so much.
Pasternack has it by the foot https://www.pasternack.com/flexible-0.206-rg302-75-ohm-coax-cable-fep-jacket-rg302-u-p.aspx
You could build it with RG6, just keep the bend radius reasonable and watch out with the soldering iron.
I was thinking about that, but most RG6 has an aluminum shield, if I remember correct. I'll look at the options on that.
Wow !!! My last ditch wire & cable guy has 45' of the RG302 on a shelf. He had to blow the dust off of it to confirm the number. He told me to come get it. I guess I need to throw some more purchases at him.
Ordered H04 copper 3/8X3/4 to machine bridges over the LDMOSs. These will have an allen screw & pad to provide a touch of downward force to the center of the LDMOS. It will also allow me to run copper conductor to each LDMOS, as they get 50V- from the heat sink. My Larcan amp has such bridges on the BLF278s, but not copper.
When the RG302 gets in, I will test it for proper length, even though it & the RG179 have the same velocity factor, just for good measure.
I have some stuff on the slow boat from China on the way, then I will go full bore.
Very cool. looking forward to seeing how this will turn out.
The long pole just became shorter!