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Recent content by FlatlandBusa

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    3cx1500a7 max exhaust air temp?

    Thank you nomad for answering my questions!
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    3cx1500a7 max exhaust air temp?

    The tube duct diameter is slightly larger than 3.25, so I'll use that dimension to be conservative. The velocity measured with my wind wizard 1/2 inch away from the tube duct outlet is 3.6 MPH, 6 inches away from the duct outlet velocity is 2.8MPH so again I'll use the conservative number...
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    3cx1500a7 max exhaust air temp?

    The temp sensor is directly in the air stream off the tube so the temperature likely isn't dropping much at all. I don't know the volume of air, I'll measure the velocity tonight and calculate the CFM. It's the stock AL-1500 blower on high speed.
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    3cx1500a7 max exhaust air temp?

    What is the maximum safe exhaust air temperature I should see off of a 3cx1500a7 in a AL-1500? This amp has tube stack mod to keep the band switch and tank circuit area cooler, plus the fan is on the high speed setting. Also running @ 4000 volts on the plate with the upgraded 10 capacitor...
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    45w into one 2879

    They will do impressive meter numbers, I have never seen a C box that wasn't starting to spread out by the time it reached 150 watts per pill.
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    Sirio mobile antennas, which is which

    There is a stud mount version of the Performer 5000, I have one and posted a link to it above. RG58 will handle far above 400 watts, I have run 1.5KW through it for extended periods. (If you want zero coax issues in a mobile use RG400) The real limit is mag mounts, I have never seen one...
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    45w into one 2879

    Definitely. I drive a 8 pill with 90 watts and that's pushing the 8 past linearity.
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    45w into one 2879

    That's not going to last long...
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    Sirio mobile antennas, which is which

    I run the antenna in the link below on my mobile with good success. It's the normal 3/8" stud mount so it will fit on any 3/8" mount. Mine is on a well grounded breedlove puck mount. Swr is very good, forward power is 900-1200 watts in the mobile depending on alternator temperature and...
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    MFJ Meter Diodes Upgrade?

    Posting this in case anyone else runs into an issue of the ATR-30 tuner reflect meter pegging at higher power levels. I think I have resolved the reflect meter hitting the stop peg when running at legal limit. I noticed that any time I was on a band that the transmitter capacitor was more open...
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    SSB Call Sign?

    I go by 1340 NEBRASKA, 1340 NEBRASKA mobile, or WDX134 on 16 LSB. I have my extra class amateur ticket, but won't share that online for op spec. 1340 is the displacement of my Hayabusa.
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    SWR

    Yes, there you can have an antenna matcher (tuner) between the SWR meter and antenna. My current equipment lineup is: radio - grounding switch - linear - SWR/power meter - antenna matcher - lightning arrestor - antenna. If all equipment in line has a characteristic impedance of 50ohms and the...
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    SB 220 Went Bang, No Smoke

    The meters on my sb 220 have the diode protection already on them. Thank you again everyone for helping me get it running again! I appreciate the guidance!
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    MFJ Meter Diodes Upgrade?

    I am having an issue with the reflect meter jumping up on my ATR-30 tuner anytime the forward power is near legal limit. The tuner and antenna system are not arcing, I have heard that before when it was badly mistuned. I'm thinking the meter diodes are breaking down. Also it seems like it is...
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    Interesting mod

    That would be a good work around for the encoder issues all these radios seem to eventually have. Hopefully someone will do a how to.