[Hammarlund] JX-17 with IF gain pot

[Richard Knoppow]

-----Original Message-----
>From: Al Parker <anchor at ec.rr.com>
>Sent: May 21, 2014 10:18 AM
>To: kgordon2006 at frontier.com, "hammarlund at mailman.qth.net" <hammarlund at mailman.qth.net>, Bob Young <bobyoung53 at hotmail.com>
>Subject: Re: [Hammarlund] JX-17 with IF gain pot
>
>Hi Ken, et al,
>	I haven't seen Bob's original post yet, but did find the rcvr on ebay, 
>along with 2 other -JX-17's, with higher BIN's.  The $300 price is a 
>decent one, with the orig. cabinet, even the added shipping doesn't make 
>it unreasonable.  But the one asking $1499 is being unrealistic, but 
>he's asking for offers.
>	The JX-17 is a diversity rcvr, made that way by Hammarlund.  All the 
>connectors on the rear are standard.  The IF Gain ctrl is a factory 
>published mod., I don't think they installed it in any model, but did 
>give info on it's installation.
>73,
>
>Al, W8UT
>www.boatanchors.org
>www.hammarlund.info
>
>"There is nothing -- absolutely nothing -- half so much
>worth doing as simply messing about in boats"
>Ratty, to Mole
>
>On 5/21/2014 12:38 PM, Kenneth G. Gordon wrote:
>> On 21 May 2014 at 11:08, Bob Young wrote:
>>
>>> epay SP-600 with IF gain, BIN 300.00 with original case, have nothing to do with
>>> auction just think it's a good deal and have no money. Seller has received
>>> stations. What's with the IF gain? Is that a rebuild like Northern radios?
>>
>> The back panel also has at least two added RF connectors, and there is an
>> additional bit of cable with a connector on it sticking out of a hole in the back.
>>
>> Looks like a receiver modified for diversity.
>>
>> Too bad I'm not closer to the seller.
>>
>> Ken W7EKB

     The IF gain trim is in a Hammarlund service note that is on the web.  The modification also adds a dropping resistor for the dial lamps.  Many of these receivers were modified by Northern Radio.  The JX-17 has a number of changes from the standard SP-600 for diversity applications. None of these have much effect when used as a stand-alone receiver.  A Hammarlund cabinet would have been unusual because most of these receivers were used as a part of a diversity system with two or more receivers and the combiner in a floor rack.