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Oh Shoosh. My Bad. I thought this was another conversation. About the Arf 2001 service Manual.
Anyways. I use the Sams photofacts for the Cobra 139XLR. Ver little diference across all of these radios using this board. Now let me see if I can find the download link.
Note. There is a difference in the audio chain in the 202. It has parts that are not in the others. Perhaps it is a filter network for the clipper. Exit 399 might know LOL !
This link is for the Trc457 shit shack version of upd 858. In the Trc Navaho. Its audio balls were severely limited. Nearly cut off. Nearly 98% the same radio. Almost forgot.
The shit shack version has a lower amps transformer.
Coax question. I just put up a new Sirio monsoon base antenna with 100’ of rg8u coax testing with myMFJ antenna analyzer shows 1.4 swr at 26.965mhz and a 1.1 at 27.405 mhz . When I checked the ohms it’s steady a 30 ohms across the entire bandwidth.
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