Spacelog Apollo 8

Apollo 8, Houston. Would you go S-band AUX switch to DOWN-VOICE BACKUP. Over.

DOWN-VOICE BACKUP. Roger and out.

Thank you.

Houston, be advised that it looks like your Quindars are clipping your voice during your transmission.

Roger, Understand. Are we still experiencing this intermittent condition that was there a few minutes ago?

Not always, but often in the beginning and in the end of your transmission.

Go.

Apollo 8, Houston. Over.

Apollo 8, Houston. Could you try to find us a better OMNI antenna? Over.

…

Apollo 8, Houston. We are unable to read you on this OMNI antenna. Over.

Houston, Apollo 8. …

Apollo 8, this is Houston. Over.

Apollo 8, Houston. We understand you are copying us. While we are trying to reestablish contact with you, would you put your optics switch to zero? We show you are drifting off in trunnion and request that you zero your optics.

Apollo 8, Houston. We copy your optics zeroed, and how are you reading us now? Over.

Apollo 8, Houston. We are down to 25 percent on your waste water dump and ready to terminate. Over.

Roger.

Apollo 8, this is Houston. Over.

Go ahead, Houston. Apollo 8.

Roger, Our next COMM test is ranging only test. I have four switches I would like you to throw, which will cause you to lose voice communications for approximately 3 minutes. Over.

Roger. Go ahead.

Apollo 8, Houston. Request S-band NORMAL mode RANGING to OFF and S-band NORMAL mode PCM to PCM. I say again. S-band NORMAL mode RANGING, OFF; S-band NORMAL mode PCM to PCM.

Apollo 8, Houston. Three communication switch positions. First, S-band AUX tape to DOWN-VOICE BACKUP; S-band NORMAL mode PCM, OFF; TELEMETRY INPUTS PCM, HIGH. I say again, S-band AUX tape to DOWN-VOICE BACKUP; S-band NORMAL mode PCM to OFF; TELEMETRY INPUTS PCM to HIGH.

Roger. Houston, this is Apollo 8. How do you read?

Reading you weak but clear now, Bill.

Roger. We still have a bad look angle on this antenna.

Apollo 8, Houston.

Apollo 8, Houston. Go ahead.

Please be informed that the … Over.

Apollo 8. Houston. Unable to copy. After about a minute of this configuration, we're going to return to normal voice, and at that time we should be able to hear you better.

Roger. What … are we going through right now?

Roger. We are in Mode 7 dash 10, and the COMM test mode is on page 223. Over.

Apollo 8, Houston. Three switch positions. TELEMETRY INPUTS PCM switch to LOW; S-band NORMAL mode VOICE to VOICE; S-band NORMAL mode PCM to PCM. I say again, TELEMETRY INPUTS PCM switch, LOW; S-band NORMAL mode VOICE to VOICE; S-band NORMAL mode PCM to PCM. Over.

You're loud and clear, Michael.