开云体育

Thanks Robert,

Just give me a shout when you get to it, If you do not find it, say in a month or so, please let me know .

I have the same trouble ... life time of "Accretions".

73s? Bill M.

No, nothing from Rick

I checked my workshop stash and I don't have those modules. I'l have to go to the storage unit and check there (I seem to be missing a box of modules, it's not where I thought it was). Apart from the distance it's been wet and windy recently and I don't like opening the unit in those conditions because once even a bit of damp gets in it's hard to dry it out again.
I'll look next time I'm there.

Robert.

Hi Robert,

Has Rick mentioned any issue with your offer, directly to you ?

He is still assisting me with advice on eproms etc. I think we are not going to impact on his turf.?

I am not commercial, just an old codger doing what hams do. My stuff will go to the local ham radio club (NCRG) when I pass on.

I had a go at the gear yesterday and it definitely will require me to make some extender boards to fault find to component level. I will have to make them on my homebrew CNC machine. The connectors will be the difficult thing to make, so I may have to carefully unsolder ones from some sacrificial junk boards that are unrecoverable. I wondered if you might have such things in your stash, just to get the edge connector fittings off.? The HP 8920 has several lengths involved -- 40 pins on the Modulation Distribution Board. And I think that will fit one of the AF boards too.

Regards

Bill Macham??? VK6IC (westwill1@...)

Thanks Rick,

Will do.

Bill M.

Hank,

Cockpit error trying to do it on my phone. My eyes aren't pointy enough. On my shoppe desktop it comes through great.

Thanks, :)

Burt

Hi Alex

I bought the kit and intend to do the same soon. Were there any special precautions you took in regards to the CRT removal?

Thanks

Dave KA6BFB

That looks so good.
I need to save up for that kit.

Hi William,

The 8921 and 8920 have basically the same eeprom so they can be interchanged. We have had several cases of "non-recoverable firmware error" on boot up due to corrupt eeproms. I don't recall ever having that due to a defective controller board.

I also recommend you check the eeprom programmer to make sure it isn't "write protecting" the programmed eeprom. We have an eetools Chipmax that defaults to write protect the eeprom. The 8920 (21) writes to the eeprom every time you use it.

Rick

Alex,

Yes, I did mean "Alex."? :)

Yes, your VGA bracket came out looking like a machine stamped insert.? My big concern is that from certain look angles it might make it hard to see.

Where did you get the LCD kit?? Please post a link if you can.? I see one advertised on eBay and was wondering if that's the one you got?

Thank you,
Burt, K6OQK

Burt, I think you mean me, not Steve.
The LCD display is better in all ways, nothing to complain about whatsoever, I cannot find one thing I dislike.
The VGA out was made by hand from some 1/8" Aluminum and a few times of measuring before cutting and filing it to look like a machine made it.
I used a VGA PCI card bracket as a template.
You have to pull the entire 892x apart to install this FYI.
Well worth the money.
-Alex. KD6VPH
Olympia, WA

Links:
http://www.simmconnlabs.com/1401/10001.html

https://www.ebay.com/itm/134645311739?hash=item1f597c68fb:g:nYsAAOSw92Jdo7tl&amdata=enc%3AAQAIAAAA8L3EF3TzQftdAVBekjCKUZsodPZn9U%2BbcltzNcSGEel3eGacOGSJTv2yIndtBjS9JIYSspAahv5dXVL1XCxXkzMy7wZuKf21%2FOsQQdyPgoMDIlPzPDbT0BbMcuNnbYpn%2FBm%2BeKyVo5ViaVz7GxqRU%2BZQVOnUCq5d0Ga%2FtpHuSxgmBNCN40OyhWFKwKWLOIoXa5KUMcKZg1uNDOzA1UWYdRS28Q%2FcH4sYtjAS1vrEZKuLXtBTIWkwTWqlsFX%2BMQcd8GhbtEIf3rqYrl0LF81wAKaAmx71gmvuF3MspRnNCLp05Bm2h92yIx3Pj1hKV9bhaQ%3D%3D%7Ctkp%3ABk9SR_ici8WwYg

Steve,

This looks great.

Two questions...? How tight is the viewing angle, and where did you find the adapter plate that fits in the "option" connector hole that accepts a VGA connector.

Thanks,
Burt, K6OQK

Ahh ... I did not change the eeprom onto the other board. I have taken a snapshot of the eprom, some time back, into my win 7 computer via an eprom burner. Did a checksum after I did it on each, and it said the copy was OK. ??? I then burned another eprom with the data, and checked that as OK. I then put the original eproms back into the boards. At all times did I use an antistatic mat and earth myself and the burner, IE., did it very carefully.

I do not have any Memory drive cards for it and thought that I should take hard copies for some future event

I did both test sets and kept them labelled.

So the eprom that is suspect, is on board7 of the 8920A by the tests so far performed?

I will plug in the copied eprom? from the 8920A and see if it boots, or at least gives the LED codes at boot up.?

I guess the copy of the 8921A will not work if I plugged that in as a test?

Regards

Bill M

Millendon

?

Hi Robert,

Many thanks for your interest in my problem.?

My ham call sign is VK6IC, although I was VK6II. That lapsed during a Covid problem at our Federal Comms office. I had the call since 1983.

I am 78 Years old and not yet ready to check out mentally, hence more ham radio and fiddling with good quality instruments. I am an Instrument maker by trade and spent over 30 years in medical and scientific servicing. Lots of fun.

I am now an aged pensioner, so cannot buy my way out of a problem. I mostly end up doing it the "hard way", time rich but money poor.

I value Rick's contribution and wealth of experience, plus his generosity to help,? The tyranny of distance features much in dealing with USA.

?

I look forward to your rumble through your stash. Maybe we will QSO when I get my HF Yagi up the tower. (works in progress, maybe this summer).

Regards

Bill Macham

?

?