UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio and TV Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Specific Vintage Equipment > Vintage Amateur and Military Radio

Notices

Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

Closed Thread
 
Thread Tools
Old 5th Jun 2020, 3:22 pm   #1
carlos10
Pentode
 
carlos10's Avatar
 
Join Date: Apr 2007
Location: Sint-eloois-winkel 8880, Belgium.
Posts: 168
Default Howes DFD4/5 counter

hi,
anyone familiar with this counters
it has a matrix board howes pmb4

there is a A and b swith on the front a = usb,lsb,am&fm
b = usb,lsb,am&fm
a is not selectable by the switch, only b

there is also a small dfd4 pcb mounted

is the counter dfd4 or5.......
picture atached
regards carlos
Attached Thumbnails
Click image for larger version

Name:	20200605_161308.jpg
Views:	144
Size:	102.0 KB
ID:	207745  
carlos10 is offline  
Old 5th Jun 2020, 3:26 pm   #2
AC/HL
Dekatron
 
AC/HL's Avatar
 
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 9,637
Default Re: Howes DFD4/5 counter

Some information here: http://www.snowbird.plus.com/electronics/index.shtml
AC/HL is online now  
Old 5th Jun 2020, 4:33 pm   #3
John KC0G
Hexode
 
Join Date: Mar 2009
Location: Minneapolis, Minnesota, USA.
Posts: 275
Default Re: Howes DFD4/5 counter

This kit was originally made by C.M. Howes Communications. It was last sold no later than early 2004. You have the DFD4 (four digit) counter with the PMB4 programmable matrix board for 6 programmable offsets. The DFD4 just had one. The DFD5 counter had a 5-digit display but without a programmable offset,

Please see these two links:
https://web.archive.org/web/20000523...-html/DFD4.htm
https://web.archive.org/web/19991109...tinfo/DFD4.pdf

Then you should ask the GQRP club for copies of the kit instructions for both the DFD4 and PMB4. See http://www.gqrp.com/howes.htm

HTH and 73 John
John KC0G is offline  
Old 5th Jun 2020, 5:16 pm   #4
carlos10
Pentode
 
carlos10's Avatar
 
Join Date: Apr 2007
Location: Sint-eloois-winkel 8880, Belgium.
Posts: 168
Default Re: Howes DFD4/5 counter

thanks to all who responded carlos
carlos10 is offline  
Old 5th Jun 2020, 6:51 pm   #5
carlos10
Pentode
 
carlos10's Avatar
 
Join Date: Apr 2007
Location: Sint-eloois-winkel 8880, Belgium.
Posts: 168
Default Re: Howes DFD4/5 counter

hi, was the bcd programmable matrix board dfd4 pmb4 factory assembled..
nothing in any parts list manual......
carlos10 is offline  
Old 6th Jun 2020, 12:35 am   #6
Granitehill
Tetrode
 
Join Date: Mar 2019
Location: York, North Yorkshire, UK.
Posts: 95
Default Re: Howes DFD4/5 counter

Quote:
Originally Posted by carlos10 View Post
hi, was the bcd programmable matrix board dfd4 pmb4 factory assembled..
nothing in any parts list manual......
I have a DFD4/PMB4 which I use with an Eddystone 680X and an Eddystone 1830.

The board was not factory assembled - the builder programmes it by fitting the appropriate diodes. I have the manual for the PMB4 which explains all (The DFD4 manual also shows the arrangement of program diodes in page 6 of the assembly instructions, but for single offset only).

I can scan this in a day or so - I have your email as shown on QRZ.COM. PM me if you would like more info.
__________________
John G4FDD
G-QRP 431
Granitehill is offline  
Old 6th Jun 2020, 10:16 am   #7
carlos10
Pentode
 
carlos10's Avatar
 
Join Date: Apr 2007
Location: Sint-eloois-winkel 8880, Belgium.
Posts: 168
Default Re: Howes DFD4/5 counter

hi john, please mail me the info, much apreciated,time is not important hi
regards carlos
carlos10 is offline  
Closed Thread

Thread Tools



All times are GMT +1. The time now is 3:16 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Copyright ©2002 - 2023, Paul Stenning.