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

Works great! Minimal signal loss if any depending on frequency you are using to transmit on.

They work and for a window sill in a house you will probably never have a problem, but if you use them for a rear window in a two seat pickup, Chevy Silverado, etc, you should modify it. The problem with a vehicle is the part that hangs outside and is exposed to the wind will eventually start coming apart at the flat cable connection. I luckily caught mine before it completely broke in two. It still has continuity through both conductors. To repair it, I laid the flat cable back along side the box that houses the connector and taped if tight against the housing on both ends. I will now wait and see how long it lasts as they are a little expensive. I will probably buy a replacement just in case it breaks during a hunting trip when I need it the most.

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.

To avoid drilling the new double-glazed windows or the 60 cm wall (the house is over 100 years old) to pass the antenna cable, I tried this product. The flexible part adapted very well to the path between the two parts of the window, bending in places. The window opens as usual, you do not notice the presence of the passer-by. The antenna receives as usual, I have not noticed any degradation in performance, not even at the signal strength measuring unit. For now I dont comment on the durability because I bought it recently, but it looks sturdy. Its not cheap, but its well done.

Works as advertised

for 50 bucks you get a window passthrough with minimal power loss and you do not have to drill holes in your walls. Update after one year the cable is separating. It still works though

Great product! Simple solution to avoid drilling holes through exterior walls!

Not exactly what the doctor ordered but the next best thing. Haven’t installed it yet but anticipate that it will work.

When I ordered this, I could find no mention that these feed-through jumpers worked with newer horizontal sliding vinyl double-pane windows. Being very energy efficient, I was concerned our 3 year old windows would seal too tightly for this jumper to work. But I can now tell you, it worked for our windows and very well. I purchased two of these jumpers, one for HF and the other for 2M/440. The cables are one on top of the other and Ive seen no interference between the two signals. This jumper solved my problem of not wanting to drill through our stucco walls. Now I can run both radios (HF & Dual-Band) with the window tightly closed.

The other guys is longer haha