Mark, totally agree with your rationale.  Any desecration can easily be expunged with a couple of snips with a pair of dikes to remove the offending padding caps.  For the record I am totally against any hammy hambone “improvements” that physically alter the appearance or make major changes to the original circuits or functions of military surplus radios, except for items that are beyond economical repair or restoration to original form.

73 de Chris AJ1G


Sent from my iPhone

On Jan 18, 2025, at 13:49, Mark K3MSB <[email protected]> wrote:


You're not going to find CW above 3800 unless it's pre-arranged. 

Mark K3MSB 

On Sat, Jan 18, 2025, 12:25 PM MARK DORNEY via MRCA <[email protected]> wrote:
So you operate where they originally did. Not a problem. I have. 

73

Mark D. 
WW2RDO

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

On Jan 18, 2025, at 10:49 AM, Christopher Bowne <[email protected]> wrote:

My name is Chris and I also padded down my BC-654 to operate in the CW band of 80 meters.  IIRC they otherwise didn’t tune below about 3800 kc.

73 de Chris, AJ1G Stonington CT
Sent from my iPhone

On Jan 17, 2025, at 21:50, Ray Fantini via MRCA <[email protected]> wrote:


I am an Idiot! You don’t take apart the front panel; you just slide the chassis over after releasing the bottom and one side screw!

As far as the chart not working the owner of the radio wants  something  that covers the entire eighty meter band so it's not my call, he intends to use the radio on the air, and I am all for that sort of attitude.

Ray F/KA3EKH

From: MARK DORNEY <[email protected]>
Sent: Friday, January 17, 2025 8:07 PM
To: J Mcvey <[email protected]>
Cc: [email protected] <[email protected]>; [email protected] <[email protected]>; Ray Fantini <[email protected]>
Subject: Re: [MRCA] [MMRCG] BC-654 project
 

CAUTION: This email originated from outside of Salisbury University. Please exercise caution when clicking links or opening attachments from external sources.

You do know that if you modify the frequency range, the original tuning charts attached to the lid of the radio will be useless. 

73
Mark D. 
WW2RDO

“In matters of style, float with the current. In matters of Principle, stand like a rock. “.   -   Thomas Jefferson 

Sent from my iPhone

On Jan 17, 2025, at 5:46 PM, J Mcvey via MRCA <[email protected]> wrote:


If memory serves me, All you have to do is disconnect the the lug harness on the side , take out a couple of screws, and I think there was a hinge.
I don't recall  having to unsolder anything to put it in service mode.

On Friday, January 17, 2025 at 03:40:39 PM EST, Ray Fantini via groups.io <rafantini=[email protected]> wrote:


Have finally gotten down to working on the two BC-654 transmitter – Receivers that are in the shop. Going to go thru and replace all the capacitors and also modify the range with the excellent K4CHE web page as a guide. Couple questions have come up.

 

First,

It appears to me that you have to unsolder the dial light stuff and do a lot of work to remove the receiver chaise in order to have access to the guts? Am I missing something here? Is there an easy method to get to the underside of the receiver?

 

Second,

Assuming that I will be operating the receiver for a while outside the enclosure, without the transmitter attached. The manual shows some four wafer switch thing along with seeing the board that Mr. Smith built up for doing this but I looked at the stuff that’s out there on line, lot of what I am seeing was not to intuitive, so I drew up this design for a box that will allow you to run the receiver outside of the frame. Please study the attached drawing and feel free to comment.

 

The plan is to start building this box maybe as soon as this weekend if I can get this access to the underside thing worked out first.

 

Ray F/KA3EKH

 

 

Manual gain control

Bias

 

_._,_._,_
Groups.io Links:

You receive all messages sent to this group.

View/Reply Online (#4361) | Reply to Group | Reply to Sender | Mute This Topic | New Topic
Your Subscription | Contact Group Owner | Unsubscribe [[email protected]]

_._,_._,_
______________________________________________________________
MRCA mailing list
Home: http://mailman.qth.net/mailman/listinfo/mrca
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
MRCA mailing list
Home: http://mailman.qth.net/mailman/listinfo/mrca
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
MRCA mailing list
Home: http://mailman.qth.net/mailman/listinfo/mrca
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
MRCA mailing list
Home: http://mailman.qth.net/mailman/listinfo/mrca
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html