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1962

Re: C26

Thanks for your reply. I've continued to look at this and am wondering if I have a hot running 2N3904 in Q6. Readings yield C=11.8V, B=4.4V, E=7V. Prior to
na6mg
Jun 26
#1962
 
1961

Re: C26

You effectively changed the value of R24 to be a bit less then 1K by paralleling the 1K across the 22K. This loads down the signal driving the gate inputs to
Steven Weber
Jun 26
#1961
 
1960

C26

Greetings, New to the list and new to DCxx tranceivers. I just finished building a DC20B. The package did not include the BS170 but had an extra 2N3904. I
na6mg
Jun 26
#1960
 
1959

File - Information Update

Information Update: Check the Photos and Files section for new uploads and be sure to post yours to share with the group. Updated DC40Kit information will be
dc40kits@yahoogroups.com
Jun 21
#1959
 
1958

Re: DC40B Output Transistor

Robert, Steve's design, for more efficient operation,includes a matching transformer and a class E (or F?) power amplifier along with a better LPF design.
Chuck Carpenter
Jun 12
#1958
 
1957

Re: DC40B Output Transistor

Steve, Thanks for the reply, I appreciate it. Thanks Robert KG6TGI From: mailto:dc40kits@yahoogroups.com Sent: Thursday, June 11, 2015 2:01 PM To:
Robert
Jun 11
#1957
 
1956

Re: DC40B Output Transistor

The difference is the BS170 is running at about 70% effiecent, while the bi-polar in the RM is running maybe 40%. I was wondering about the output transistor,
Steven Weber
Jun 11
#1956
 
1955

DC40B Output Transistor

I was wondering about the output transistor, a BS170, reliability at higher outputs. I am getting 1.5 watts @13.8 volts which is good, but this transistor is
Robert
Jun 11
#1955
 
1954

Re: Power Connector P/N

I actually got a 5.5 x 2.5 mm. thanks, From: mailto:dc40kits@yahoogroups.com Sent: Thursday, June 11, 2015 7:30 AM To: dc40kits@yahoogroups.com Subject: Re:
Robert
Jun 11
#1954
 
1953

Re: Power Connector P/N

I ordered a 5.5 x 2.1 plug and does not seen correct, the connection is intermittent. I should have ordered the mating jack at the same time, which I have
Robert
Jun 11
#1953
 
1952

File - Information Update

Information Update: Check the Photos and Files section for new uploads and be sure to post yours to share with the group. Updated DC40Kit information will be
dc40kits@yahoogroups.com
Jun 7
#1952
 
1951

Re: Picokeyer

George, I have one. The PicoKeyer Plus version. Works fine assembled for coin cell power. No docs but available on line. $25 shipped, I do take PayPal. If
Chuck Carpenter
Jun 1
#1951
 
1950

Picokeyer

Anyone have one of these kits that you have no use for? E-mail me with price shipped. Do you take Paypal? Tnx George/W2BPI
w2bpi
May 31
#1950
 
1949

Re: Power Connector P/N

Robert, I believe is 5mm x 2.5 mm. A 5 x 2.1 doesn't quite fit. ... Chuck Carpenter, W5USJ EM22cv, Rains Co. TX ... This email has been checked for viruses by
Chuck Carpenter
May 31
#1949
 
1948

Power Connector P/N

The current RockHunter option power connector does not contain the mating plug, anyone know the size or p/n for the jack? Thanks, Robert KG6TGI
Robert
May 31
#1948
 
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