Spacelog Apollo 8

Apollo 8, this is Houston. Over.

Apollo 8, this is Houston. Over.

Go ahead, Houston. Apollo 8 here.

Roger. We have been having a little antenna problem on the ground here. We are reading you now with a lot of noise in the background. How me?

Loud and clear, Michael.

Roger. Frank, we are still trying to get a little bit better COMM here. Stand by; you're unreadable.

Apollo 8, this is Houston. Over.

Loud and clear, Houston. Apollo 8.

I understand you are reading us loud and clear; we are barely reading you. Would you go to P00 in ACCEPT, please? We are going to send you a P27 update.

Roger. Going to P00 and to ACCEPT, Houston.

We are in P00 and ACCEPT.

Apollo 8, Houston. You are not readable. We are going to delay the P27 until we get a little bit better lock on you.

As long as you're reading me okay, Frank, I'll bring you up to date on a couple of things. The P27 which we will be sending you is a state vector update going to the LM slot, and we'd like to—as per plan—to transfer that to the CSM slot by a VERB 47 ENTER, and we would like to just remind you that prior to doing your VERB 47 ENTER manually select P00 and wait for the computer activity light to go out. Did you copy? Over.

Roger. Roger. We copy.

Okay, Frank. Are you still reading me loud and clear? Over.

Roger. Loud and clear.

Alright. I'll go ahead with a map update when you're ready to copy.

Okay. Can you hold off a minute?

Roger. Apollo 8, Houston. Your map update for REV 4/5: LOS 76:59:59, sunrise 77:09:06, prime meridian 77:15:47, AOS 77:45:50, sunset 78:22:03; IP-1 position time for control point 2, 77:29:42; IP-1 time closest approach for target B-1, 78:10:25. Over.

We'll have to get that data later on.

We'll try it again later, Frank.

Apollo 8, this is Houston. Over.

Apollo 8, this is Houston. Over.

Roger, Houston. How do you read?

Reading you a lot better, Bill. How are you reading me?

I'm reading you five—loud and clear, and you copying our low bit data to record these tracking passes? Over.

That is affirmative. We are getting low bit data now.

Okay. I've played—run the tape recorder back to the beginning. We have quite a bit of high bit, so all you'll have to do is start recording when you are ready.

Roger. Stand by one, Bill.

Apollo 8, Houston. Stand by one on the tape recorder dump. We would like you to look at your steam pressure. We think that the primary evaporator may have dried out, and if the steam pressure shows off-scale low, would you please close the back pressure valve and reservice the evaporator? Over.

Roger.

Apollo 8, Houston. We are ready to send you the P27 LM state vector update when you are ready. Over.

You will have to wait until this tracking exercise is over with, Mike.

Apollo 8.

Apollo 8, this is Houston. Were you calling? Over.

Roger. You can go ahead now and give you computer and get the updates, and let's get going on the PAD messages.

Roger.

It is in P00 and ACCEPT.

Okay, Houston. Are you ready to talk about the water boiler problem?

Roger. We copy you in P00 and ACCEPT, and we are sending you a P27 LM state vector. On the water boiler, it looks to us like the evaporator has been reserviced. How does it look to you? Over.

Roger. I reserviced it, put it to AUTO—H₂O flow to AUTO; and the steam pressure went to zero again. So I tried reservicing it the second time for 1 minute, and again no results. I'm in the present process of closing the back pressure valve manually. Over.

Roger. Understand you tried to reservice it twice, both times steam pressure has gone to zero, and now you are closing the back pressure valve manually.

Roger. Each time I have reserviced it, the steam pressure came up to about 0.07 to 0.1; but as soon as the steam and water were put to AUTO, the steam pressure went right back down again.