Thanks for the reply, sorry for some errors, besides being a beginner here, I use Google Translate.
The repeater operates with a Comet GP9N antenna with SWR of 1.4, with approximately 25 meters of RG58 cable and an elektril duplexer of 6 ¼ wave cans with a rejection of 110db, the VSWR of the duplexer with 1,2, the jumper between the cans of ¼ / VL (about 13cm in length) with RG214, the jumper between the can and the radio with ½ / VL, interaction zero with a load of 50 ohms, when I put in the antenna comes a snore along with the audio.