Looking to understand the mod on this newly bought 148 GTL DX

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26VT01
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Looking to understand the mod on this newly bought 148 GTL DX

Post by 26VT01 » 12 May 2018, 15:50

Haven't opened a rig since 1982 but here we go !

No power meter as yet to check but the NB/ANL switch appears to change power. The switch has a 3.5k ohm 5% resistor ( orange green red gold) & the 2 wires from it , in the 1st pic go to a place near / under VR13.


Image20180512_161553[1] by Martyn Lewis, on Flickr

Image20180512_161416[1] by Martyn Lewis, on Flickr

& there a track that look's like its had a repair ?

Image20180512_161649[1] by Martyn Lewis, on Flickr

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Black Spirit
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Re: Looking to understand the mod on this newly bought 148 GTL DX

Post by Black Spirit » 12 May 2018, 17:46

Yeah its a low power switch, Atleast they didnt lower the power with the VR then use a switch to short the VR without the resistor for high power as thats worse and i have seen it many times, I would remove it and set the VR for around 7w and reconnect the NB/ANL

26VT01
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Re: Looking to understand the mod on this newly bought 148 GTL DX

Post by 26VT01 » 12 May 2018, 22:46

Black Spirit wrote:
12 May 2018, 17:46
Yeah its a low power switch, Atleast they didnt lower the power with the VR then use a switch to short the VR without the resistor for high power as thats worse and i have seen it many times, I would remove it and set the VR for around 7w and reconnect the NB/ANL
Low power , okay , cant see a use for that ! removing it etc sounds like a plan - thanks ;)

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