Comet CTC-50M CTC50M CTC 50M CTC/50M Original Window Feed-Thru Jumper W/UHF Female (SO-239) Connectors at Each End

I like the profile of these window jumper cables because I don’t like the larger pass-through units. I have one for each of my antennas and built a small cover for them to help protect them from the rain and snow we get where I live. They are compact, but very well built and I haven’t noticed any change in reception or transmission quality. I’d buy another if I needed to without hesitation.

Windows in our leased house are the swing-out variety, so the usual slide-window pass-throughs dont fit. I eventually bought three of these, one for HF, one for VHF and one for UHF. Insertion loss is better than I expected, and SWR is acceptable in all three bands. The only downside is that being as thin as they are theyre not the sturdiest. Best used in locations where you can put them in and then dont open/close the windows a lot.

I was surprised by how well built this pass through was. It works as advertised. Great design with zero signal loss. I definitely would recommend this product!

Meets all expectations

Works as intended with little or no increase to SWR. I added some all-weather electrical tape to both sides of the flat strap to give it increased protection from the tight fit.

Works as advertised.

Works great

At best, this is a stop-gap device. Though I have a good experience with it across the VHF amateur band (1.2:1 SWR) I have issues with it on 70cm. The SWR at the low end of this band is ok but it rises sharply towards the top end to over 1.7:1. The stated insertion loss seems pretty accurate and it too rises shaarply on 70cm. My suspicion is that it was designed for primary use in Hf up through VHF but the manufacturer pushed its use on UHF to maximize sales. Unfortunately there arent many alternatives around (MFJ if your window has an opening up to 48). Otherwise the tape is quite flimsy and will, no doubt, turn brittle in UV light. At best, for my use, I can only rate it 3 stars...and thats pushing it.

Does what it says it will and saves me drilling holes in wall

This is intended as a 50 ohm flat window sash pass-through for coaxial cable used by amateur radio operators or others who need to get the coax from outside to inside without drilling a hole in wall or window sash for coax. It is quite flat with overall thickness of about 1/16 inch so it can use the space between the window sash and frame. It is well constructed with sealed joints on the ribbon conductor.