Good afternoon everyone I have two Astro Spectra VHF 110 Watt model number T04KLH9PW7AN and I have programmed them both but I can receive but I cannot transmit I’ve tried several different mics, checked and checked programming information and the same result no transmit does anyone happen to have any ideas on what could be my issue
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Astro Spectra Won’t TX
- Thread starter sblosser
- Start date
Project25_MASTR
Millennial Graying OBT Guy
How have you verified that the radio does not transmit? Wattmeter?
mmckenna
I ♥ Ø
Do you have the orange wire connected to 12 volts?
The orange wire is the transmit control, similar to ignition switch control. 12v needs to be applied to the orange lead to permit transmitting.
The orange wire is the transmit control, similar to ignition switch control. 12v needs to be applied to the orange lead to permit transmitting.
Yes orange and green wire both connected to constant 12 volt, I’ve looked over the codeplug a bunch, tried several different mics and what baffles me is that it’s not just one radio it’s two different radios with the same issue
mmckenna
I ♥ Ø
OK, that's a good start.
"two different radios with the same issue" is interesting. Did both these radios come from the same place? Any chance they were modified/damaged in the same way?
Maybe get someone else to look at your codeplug for the obvious and maybe not so obvious.
Is the power supply properly sized?
mmckenna
I ♥ Ø
My memory if fuzzy, but I seem to recall something about the emergency footswitch wiring that can impact the ability to transmit.
I don't recall the programming for that, but maybe check the DB15 connector and confirm the pin 2 and pin 8 are jumpered.
But I could be wrong. Maybe someone with more Spectra experience can chime in.
I don't recall the programming for that, but maybe check the DB15 connector and confirm the pin 2 and pin 8 are jumpered.
But I could be wrong. Maybe someone with more Spectra experience can chime in.
Yes came from the same place and both radios are installed in two different vehicles and eBay seller who we bought the radios from said they worked prior to selling them.
Project25_MASTR
Millennial Graying OBT Guy
On a high power, with a W9...I can't remember but generally Emergency should be jumped to ground on all Astro, Astro 25 and APX mobiles.
mmckenna
I ♥ Ø
Thanks for that. I remember working on these, but it was so long ago.
So this is the head I have is there something I need to modify because it’s been a very long time since I messed with the Astro’s I don’t remember everything and the emergency function is disabled in the programming because it’s not a function I need on this particular radio
