Spacelog Apollo 8

Okay. Then we'll keep using it.

This PTC attitude really isn't the greatest for taking pictures of the earth.

Roger.

Or of the moon.

Apollo 8, kinda stand by for a burst of noise as we change configurations on the ground. We're going into test 1; You'll still have up and downlink, and we'll be in this mode for 2 minutes, but you may hear some burst of noise as we change.

Roger.

Okay, Apollo 8. We're in the middle of our first test, and how about giving me a voice check.

Roger, Houston. This is Apollo 8. One, two, three, four, five, five, four, three, two, one. Apollo 8, out.

Roger. And read you loud and clear. This COMM is unbelievably good.

Good.

Okay, Apollo 8. We've finished the first test, and we're now going to change the uplink mode to UPLINK COMMAND AND RANGING, and we'll be going without upvoice. We'll be in this mode for 2-1/2 minutes and will be sending a test messages. It'll have no effect on either your computer or your panel switch configuration. What you might see will be the S-band noise that's associated with the break lock. However, you should still have a good signal on your power meter. This is not a loss of signal, but rather just a loss of the voice modulation, and I'll do you a mark just before we do that so that you can turn your S-band volume down if you so desire, and we'll be back up in this mode that we're in now in 2-1/2 minutes.

Roger.

Apollo 8, Houston. Voice check.

Read you five-by, Houston.

Apollo 8, Houston.

Roger, Houston. Read you loud and clear and am with you. Completed our second test.

Okay.

Okay. Our next test will be a test of the uplink voice and ranging with downlink voice and ranging and on low bit rate, so we'll be changing bit rate on you, and we'll be making a voice check in the middle.

Okay. You've about had it on the high gain. You might try to get it in, but it's going to hit the scan limit at any second.

Okay, Apollo 8. Looks like we'll get our information before we lose the high gain.

Okay. We'll just leave it go.

Roger.

They got the scan limit. We'll let it go, Houston, until it breaks lock.

Okay, Apollo 8. Go ahead and switch to the OMNI.

How're you doing with your test?

Okay. We've got three-fifths of the test. We'll have to pick up the rest next time we get a look at high gain.

Houston, Apollo 8.

Go ahead, Apollo 8.

Roger. Reading on P21 at 269 10 indicates a parallel of about 67.4 miles. I guess we can carry her.

You guys are getting pretty good.

That's a lot better than our first answer.

Houston, Apollo 8.

Go ahead, Apollo 8.

Roger. I'd like to ask a question about this TLI plus 11 maneuver that we copied. In the remarks, you put P37, DELTA-V 7900. Is this the DELTA-V that we would use with P37?

Okay. That's the option that you use with minimum time.

Roger. What I'd like to do is check on our P37 with your TLI maneuver update.

Okay, Apollo 8. We'd like to make sure that we don't have a misunderstanding that this 7900 feet per second is the DELTA-V. It's not associated with the high speed per feet work around procedure. This is just a standard P37 DELTA-V.

We're starting in now on our fourth test. Like for you to put your TELEMETRY INPUT switch to PCM HIGH.

It's in HIGH.

Okay. And now we're going to switch uplink to the upvoice backup for about 2 minutes, and it may take a couple of seconds when you hear the upvoice lost. So you can place your up-telemetry switch to upvoice backup, and in the event that all of this doesn't work out too well, I'm reading 12:47 on my clock now, and let's meet back in our present configuration no later than 12:50.

Roger. On upvoice backup.

Okay. Thank you.

Apollo 8, Houston.

Roger, Houston. Read you loud and clear.

That's pretty good. That's upvoice backup, and will you confirm that you're in NARROW BEAM on high gain?

Roger. NARROW BEAM.

Okay. Thank you. We're going to continue tracking and watching high-gain antenna for a couple of minutes. Then I'll give you a call when we're ready to go back.

Roger.

Apollo 8, Houston. We have completed this test. We'll be switching back to full uplink. When you hear the noise associated with the loss of modulation, you can go back from the up-telemetry switch to DATA.

Thank you.

All the way.

Okay. Loud and clear.

How's everything looking down there?

Real fine. We've just got one to go here if you'll put your telemetry input PCM switch to LOW.

Roger. Go in LOW.

Okay. We'll be in that configuration for about 2 minutes, and then we'll be completed with the COMM test.

Roger.

I have some service module RCS quantities if you would like to take them sometime and check them against your onboard calculations.

Stand by.

Roger. Ready to copy. Could you give quad A, B, C, and D in that order?

Okay. Will do. And I'll give you weights in pounds and percentages. Quad A 231 for 76 percent.

Roger. Stand by. What time is that for?

Oh, 12 plus 15.

Okay. Got it.

Okay. Quad Bravo 251, 82 percent. Quad Charlie 240, 79 percent.

Slow down.

Quad Delta 245, 81 percent. P and C advises that these numbers are still good even though it is a 12:15 time. And we are completed with the COMM test. You can take your high-gain antenna and go back to MEDIUM.

Roger. MEDIUM.

Apollo 8, we would like to dump your tape again, if you are not using it. And the reason we want to do this is we have some—we didn't completely get dumped before the burn. We would like to get that and get the rest of the burn data. There is no hurry on it. We can do it whenever it is convenient for you.

You got it.

Okay. Thank you.

Apollo 8, Houston. Do you call?

Negative, negative. Negative, Houston.

Okay. Thank you. Say, we're curious about what you did with your Mae West?

We thought we might bleed the CO₂ out into the vacuum connector here in our next water dump. We forgot it the last time. Did you copy?

Roger, Doesn't seem like there is any problem with going ahead and dumping it in the cockpit if you like.

It is CO₂, isn't it?

That's affirm.

Apollo 8, Houston. We asked it again, and it looks like no problems at all with going ahead and bleeding it down in the cockpit. And then if you need it again on entry or after entry, well, we can blow it up with oral tube.

Apollo 8, Houston.

Apollo 8, Houston.

Apollo 8, Houston.

Apollo 8, Houston.

Houston, Apollo 8. Read you loud and clear. How us?

Okay. Loud and clear. Didn't get you there for a while.