|Update: July 2003
I have received a request for modification details describing how to set the TR7 for QRP
operation. Any suggestions? (See below.)
2) Does anyone know of an organisation in the UK offering repair services for the TR7?
3) For a picture of the TR7, see: http://www.dproducts.be/drake_Museum/images/tr7.jpg
Update: September 2004
operation, Nigel G8IFF writes:
"Setting a TR7 for QRP is
relatively easy. Turn the ALC pot down (I
think it's on the driver board). Having had blown up PA transistors on mine,
I've set mine for 100W out on all bands and use a speech processor.
Alternatively, the driver board probably runs a watt or so without the PA
module. (Then, whoever wanted to know, can send me
his PA module to use with my FT-817!)"
Regarding Modification No. 8 (LF Coverage) Marcus PA0MLC writes:
"In order to improve the sensitivity of the LF frequencies one may
remove the 20 dB attenuator which is inserted in the RF path when
using the LF antenna input.
However, care must be taken as RF feedback during TX via this path
is now (without the 20 dB att) very much likely.
Nevertheless, the improvement of the sensitivity is worthwhile, in
Steve Rawlings, GW4ALG
7th August 2005