MobilinkdHas anyone pushed 100W HF through an SMA connector? I see they are rated at 600W below 1GHz. LMR195 is rated to 800W at 50MHz. Looking at a short run of LMR195 to get through the exterior wall into an SMA keystone outlet in the shack. Maybe 3m/10ft max run between the radio and the LMR400 feedline. Losses in adapters and cables are acceptable. Grounding is handled. Anything else I should be concerned with? #hamradio
Really appreciate everyone's feedback on the SMA feedthrough to the shack. This is the result. Made 4 custom SMA keystones using keystone blanks and SMA bulkhead connectors. These fit into a 4-port Decora keystone insert. #hamradio
AN/CRM-114@Mobilinkd tidy work. I’m thinking of doing the same but doing BNC female on the front and Type N on the back. What are you using for patch cables?
@flyingsaceur I went with 50cm of RG-316 with SMA connectors on both ends. The RG-316 can handle the power I am putting out and the attenuation at that length is not bad. SMA is a superior RF connector, and I have all manner of SMA adapters -- for all genders of N, UHF, and BNC.
Chuck@Mobilinkd From an EE perspective the issue would be heating. Could be pretty easy to prototype and to put a FLIR or non-contact thermometer to look at the transmission line temps.
My guess is that it will not be an issue.
AE0SB@Mobilinkd technically...I have a cheap little 100w HF amp I got on eBay. It has SMA connectors for the input and output. I have SMA-M/BNC-F adapters on both ends though.
I have not noticed any heat, but I also have not checked with the IR thermometer either.